OA18939A - Repellent and attractant composition for dichromatic animals - Google Patents

Abstract

The combination of a repellent agent or an attractant agent with a wavelength-specific visual eue agent has been found to produce an unexpected and synergistic effect of increased repellency or attraction in dichromatic animais who are not maximally sensitive to the wavelength of the repellent or attractant agent. The method of the invention may be used to repel dichromaticanimal pests; or to prevent or minimize monetary damage, particularly to agricultural products, natural resources or private property. The method of the invention may also be used to attract dichromatic animais for the purpose of agricultural production, recreational opportunities (e.g., wildrodent feeders), or the effective administration of target-animal pharmaceuticals or mitigation techniques.

Description

REPELLENT AND ATTRACTANT COMPOSITION FOR DICHROMATIC ANIMALS

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application daims priority to U.S. Provisional Application No. 62/274,467, ftled on January 4, 2016 and U.S. Provisional Application No. 62/364,513, filed July 20, 2016, the content of each is hereby incorporated by reference into this application.

FIELD OF THE INVENTION

The invention relates to compositions and methods for repelling or attracting dichromatic animais from target foods or locations.

BACKGROUND OF THE INVENTION

Vision is fondamental to the everyday behavior of most animais, including manimals, birds and insects. Most animais use vision to facilitate their social interactions, orientation and foraging behavior. The visual system of humans has been characterized as trichromatic; human visual pigments are maximally sensitive to wavelengths in three régions (i.e. reds, greens and blues). Most birds are tetrachromatic; bird visual pigments and oil droplets are ultraviolet- or violet-sensitive (UVS, VS), as well as the short-, medium- and longwavelength sensitive cônes also found in humans (SWS, MSW, LWS). In contrast, most ail other animais are sensitive to only two wavelength régions and as such are categorized as dichromatic.

Vertebrates generally hâve a single rod photopigment and up to four classes of cône photopigment (i.e. long-, middle-, and two short-wave sensitive visual pigments; Cowan et al. 2002). Most mammals are dichromatic, having two classes of cône photopigment (i.e. long- and short-wave sensitive visual pigments; David-Gray et al. 2002). The short-wave sensitive (SWS) visual pigments of vertebrate cône photorecep tors are divided into two molecular classes, SWSl and SWS2. Only the SWSl class is present in mammals. The SWSl class has been subdivided into violet-sensitive (VS; peak maximum absorbance, or λπιηχ = 400—430 nm) and ultraviolet-sensitive visual pigments (UVS, k_max < 380 nm; Cowing et al. 2002). Although ultraviolet (UV) sensitivity is widespread among animais it is considered rare in mammals, being restricted to the few species that hâve Z_max < 400 nm (Douglas and Jeffery 2014). Animais without UVS visual pigments, however, will be sensitive to UV wavelengths if they hâve ocular media that transmit UV wavelengths, as ail visual pigments absorb significant amounts of UV if the energy level is sufficient (Douglas and Jeffery 2014).”

Although most animais are not maximally sensitive to full spectrum wavelengths (e.g. 3001,400 nm), implications of this technology include behavioral responsiveness (e.g. > 5% repellency or attraction) among dichromatic animais to wavelengths for which they are not maximally sensitive. This invention exploits the novel and non-obvious observation of behavioral responsiveness among dichromatic animais to wavelengths for which they are not maximally sensitive (e.g. <400 nm, >700 nm). This use of wavelengths independent of those that characterize dichromatic vision has implications for a myriad of applications for repellents and attractants of dichromatic animais.

SUMMARY OF THE INVENTION

In accordance with this discovery, it is an object of this invention to provide improved methods and compositions for repelling and attracting dichromatic animais from a target.

An object of the invention is to provide a method for decreasing the behavioral response of a dichromatic animal associaied with a target comprising: providing a repellent composition comprising a wavelength-specific visual eue agent and a repellent agent wherein the wavelength-specîfic visual eue agent has spectral characteristics sufficiently similar to the spectral characteristics of the repellent agent and wherein the spectral characteristics of the repellent agent fall outside of the ranges within which said dichromatic animal is maximally sensitive; applying said repellent composition to said target, presenting said target to said dichromatic animal, whereby said dichromatic animal’s behavioral response associated with said target is decreased at a level of at least 5% greater than when said dichromatic animal is presented with a target upon which is applied a composition comprising only one of said wavelength-specific visual eue agent or said repellent agent, or comprising significantly lower amounts of either (or both) said wavelength-specific visual eue agent or said repellent agent. The visual eue agent can be applied at an amount effective to be visibly recognized by said dichromatic animais.

A further object of the invention is a method for decreasing the behavioral response of a dichromatic animal associated with a target via a repellent application selected from the group consisting of: (a) an initial application of an effective amount of a repellent agent to said target, and one or more subséquent applications to said target of an effective amount of a wavelength-specific visual eue agent in combination with the same amount or a reduced amount of the repellent agent; or (b) an initial application of an effective amount of a repellent agent to said target, and one or more subséquent applications to said target of effective amounts of a wavelength-specific visual eue agent; or (c) one or more concurrent applications of an effective amount of a repellent agent and an effective amount of a wavelength-specific visual eue agent.

Another object of the invention is a method for increasing the behavioral response of a dichromatic animal associated with a target comprising: providing an attractant composition comprising a wavelength-specific visual eue agent and an attractant agent wherein the wavelength-specific visual eue agent has spectral characteristics sufficiently similar to the spectral characteristics of the attractant agent and wherein the spectral characteristics of the attractant agent fall outside of the ranges within which said dichromatic animal is maximally sensitive; applying said attractant composition to said target, presenting said target to said dichromatic animal, whereby said dichromatic animal’s behavioral response associated with said target is increased at a level of at least 5% greater than when said dichromatic animal is presented with a target upon which is applied a composition comprising only one of said wavelength-specific visual eue agent or said attractant agent.

Another object of the invention is a method for increasing the behavioral response of a dichromatic animal associated with a target via an attractant application selected from the group consisting of: (a) an initial application of an effective amount of attractant agent to said target, and one or more subséquent applications to said target of an effective amount of a wavelength-specific visual eue agent in combination with the same amount or a reduced amount of the attractant agent; or (b) an initial application of an effective amount of an attractant agent to said target, and one or more subséquent applications to said target of effective ainounts of a wavelength-specific visual eue agent; or (c) one or more concurrent applications of an effective amount of an attractant agent and an effective amount of a wavelength-specific visual eue agent.

Another object of the invention is a method for changing the behavioral response of a dichromatic animal associated with a target comprising providing a composition comprising a wavelength-specific visual eue agent and an agent wherein the wavelength-specific visual eue agent has spectral characteristics sufïiciently similar to the spectral characteristics of the agent and wherein the spectral characteristics of the agent fall outside of the ranges within which said dichromatic animal is maximally sensitive, applying said composition to said target, presenting said target to said dichromatic animal, whereby said dichromatic animafs behavioral response associated with said target is changed at a level of at least 5% greater than when said dichromatic animal is presented with a target upon which is applied a composition comprising only one of said wavelength-specific visual eue agent or said agent. The change can be a decrease in the behavioral response, wherein the composition is a repellent composition and the agent is a repellent agent. The change can be an increase in the behavioral response, wherein the composition is an attractant composition and the agent is an attractant agent.

Other objects and advantages of this invention will become readily apparent from the ensuing description.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure l is a bar graph that illustrâtes repellency of an UV-absorbent, postingestive repellent in a dichromatic animal, the California vole (Microtus californiens Peale). Mean feeding repellency associated with varying concentrations of an anthraquinone-based repellent (Avipel® Shield; Arkion® Life Sciences, New Castle, DE, USA) offered to California voles (Microtus californiens Peale). Repellency represents test consumption (day 4) relative to average, pretreatment consumption (days l-3) of untreated whole oats (n = 8-10 voles per repellent concentration).

Figure 2 is a bar graph that illustrâtes repellency of an UV-absorbent, postingestive repellent in a dichromatic animal, Richardson's ground squirrel (Urocitellus richardsonii Sabine). Mean feeding repellency associated with varying concentrations of an anthraquinone-based repellent (Avipel® Shield; Arkion® Life Sciences, New Castle, DE, USA) offered to Richardson’s ground squirrels (Urocitellus richardsonii Sabine). Repellency represents test consumption (day 4) relative to average, pretreatment consumption (days l-3) of untreated whole oats (n = 9-10 ground squirrels per repellent concentration).

Figure 3 is a bar graph that illustrâtes repellency of an UV-absorbent, postingestive repellent in a dichromatic animal, the deer mouse (Peromyscus maniculatus Wagner). Mean feeding repellency associated with varying concentrations of an anthraquinone-based repellent (Avipel® Shield; Arkion® Life Sciences, New Castle, DE, USA) offered to deer mice (Peromyscus maniculatus Wagner). Repellency represents test consumption (day 4) relative to average, pretreatment consumption (days 1-3) of untreated whole oats (n = 8-9 mice per repellent concentration).

Figure 4 is a bar graph that illustrâtes repellency of an UV-absorbent, postingestive repellent in a dichromatic animal, the cottontail rabbit (Sylvilagus audubonii). Mean feeding repellency associated with varying concentrations of an anthraquinone-based repellent (Avipel® Shield; Arkion® Life Sciences, New Castle, DE, USA) offered to cottontail rabbits (Sylvilagus audubonii Baird). Repellency represents test consumption (day 4) relative to average, pretreatment consumption (days I-3) of untreated whole oats (n = 10 rabbits per repellent concentration).

Figure 5 is a bar graph that illustrâtes repellency of an UV-absorbent visual eue subséquent to exposure to an UV-absorbent, postingestive repellent in a dichromatic rodent, the California vole (Microtus californiens). Mean consumption (± S.E.M.) of whole oats offered to California voles (Microtus californiens Peale; 11 = 8 per test group). Voles were offered untreated whole oats and those treated with 0.2% of an UV feedîng eue (active ingrédient: titanium dioxide; Evonik Goldschmidt Corporation) throughout the four-day test. The repellent-conditîoned test group was exposed to an UV, postingestive repellent prior to the test.

DETA1LED DESCRIPTION OF THE INVENTION

The present disclosure is directed to combinations of a visual eue agent and a rodent attractant or repellent composition which hâve been found to produce an unexpected and synergistic effect of increased repellency or attraction in dichromatic animais. The synergy of this invention is characterized by greater behavioral response (e.g. > 5% repellency or attraction) to the combination of a visual eue and a repellent, or a visual eue and an attractant, relative to the behavioral response observed for the visual eue agent and repellent or attractant when presented independently (i.e. not in combination). The method of the invention may be used to repel dichromatic-animal pests; or to prevent or minimize monetary damage, particularly to agricultural products, naturel resources, or private property. The method of the invention may also be used to attract dichromatic animais for the purpose of agricultural production, recreational opportunités (e.g. wild-rodent feeders), or the effective administration of target-animal phannaceuticals or mitigation techniques.

In contrast to the prior art of an Ultraviolet Strategy for Avian Repellency (Le. tetrachromatic animais; U.S. Patent No. 9131678), the methods and compositions of this invention are effective for and applicable to decreasing or increasing the behavioral response of dichromatic animais associated with a target (i.e. food or location) of interest using repellent or attractant agents having spectral characteristics outside the range within which dichromatic animais are maximally sensitive (e.g. wavelengths of <400 nm, >700 nm). In contrast to repelling rodents with a polycyclic quinone (i.e. Methodfor Repelling Rodents\ U.S. Patent Application No. 14595718), the methods and compositions ofthis invention are effective for and applicable to decreasing or increasing the behavioral response of dichromatic animais associated with a target that comprises the use of a combination of a wavelength-specific visual eue agent and a repellent or attractant agent.

In particular, the présent disclosure is directed to improved compositions and methods for repelling and attracting dichromatic animais by use of wavelength-specific repellent and attractant agents in combination with visual eue agents, and in certain cases, visual eue agents alone.

In one embodiment of the présent disclosure, a repellent agent can be used in combination with wavelength-specific visual eue agents that exhibit spectral characteristics sufficiently similar to those of the repellent agent such that dichromatic animais do not visibly differentiate between the agents (e.g. ± 10 50 nm), the amount of the repellent agent may be reduced while maintaining the ability to effectively repel dichromatic animais (e.g. < 95% of the amount of the repellent agent necessary to achieve > 5% repellency without this invention, or when the repellent or attractant agent is used without a visual eue agent).

In an alternative embodiment, an attractant agent can be used in combination with wavelength-specific visual eue agents that exhibit spectral characteristics sufficiently similar to those of the attractant agent such that dichromatic animais do not visibly differentiate between the agents (e.g. ± 10-50 nm), the amount of the attractant agent may be reduced while maintaining the ability to effectively attract dichromatic animais (e.g. < 95% of the amount of the attractant agent necessary to achieve > 5% attraction without this invention, or when the attractant agent is used without a visual eue agent).

One surprising finding of the présent disclosure is that dichromatic animais, which are not maximally sensitive to UV or infrared (IR) signais, are in fact responding behaviorally to UV or IR signais when presented in accordance with the présent disclosure. Dichromatic animais are not maximally sensitive to wavelengths which are either less than 400 nm or greater than 700 nm. However, when repellent or attractant agents are presented on a target in combination with a vîsual eue agent exhibiting spectral characteristics suffïciently simiiar to the agent, but falling outside of the ranges to which dichromatic animais are sensitive, the dichromatic animais unexpectedly respond behaviorally by exhibiting a decreased behavioral response when presented with a repellent agent or an increased behavioral response when presented with an attractant agent in accordance with the present disclosure.

As used herein, the term “repeliency” means the percent decrease in consumption (or occupancy) of treated target relative to untreated target. The term “effective repeliency ’ means at least 5% decrease in consumption (or occupancy) of treated target relative to untreated target. The effective repeliency as contemplated herein can be 5%, 6%, 7%, 8%, 9%, 10%, ll%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 2I%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%,

41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51 %, 52%, 53%, 54%, 55%, 56%,

57%, 58%, 59%, 60%, 6I%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%,

73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%,

89%, 90%, 91%, 92%, 93%, 94%, 95%. 96%, 97%, 98%, 99%, or 100% decrease in consumption (or occupancy) of treated target relative to untreated target.. These values can be used to define a range, such as 50% to 75%, or 75% to 85%, or 25% to 50% decrease in consumption (or occupancy) of treated target relative to untreated target.

As used herein. the term “attraction” means the percent increase in consumption (or occupancy) of treated target relative to untreated target.. The term “effective attraction means at least 5% increase in consumption (or occupancy) of treated target relative to untreated target. The effective attraction as contemplated herein can be 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, %, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%,

57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%,

73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%,

89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or 100% increase in consumption (or occupancy) of treated target relative to untreated target. These values can be used to define a range, such as 50% to 75%, or 75% to 85%, or 25% to 50% increase in consumption (or occupancy) of treated target relative to untreated target.

The term “relevant behavioral response” as used herein refers to the dichromatic animal’s reaction to either effective repellency or effective attraction. For example, when a dichromatic animal exhibits a relevant behavioral response of decreased consumption (or occupancy) of treated target relative to untreated target, that response is the resuit of effective repellency. Altematîvely, when a dichromatic animal exhibits a relevant behavioral response of increased consumption (or occupancy) of treated target relative to untreated target, that response is the resuit of effective attraction. In addition, the percentage values provided in the two paragraphe preceding this one can be used with the term “relevant behavioral response.” For example, 50% repellency is équivalent to a behavioral response at a level of 50% decreased consumption (or occupancy) of treated target relative to untreated target.

In accordance with the present disclosure, the methods for repelling dichromatic animais from a target can be accomplished by at least any of the following approaches: (i) the application of a wavelength-specific visual eue agent to a target în an amount effective to repel dichromatic animais; (ii) the application of an initial treatment of a wavelength-specific repellent agent to the target in an amount effective to repel dichromatic animais, and the subséquent application of a wavelength-specific visual eue agent in combination with same or reduced application rate of the repellent; (iii) the application of an initial treatment of a wavelength-specific repellent agent to the target în an amount effective to repel dichromatic animais, and the subséquent application of a wavelength-specific visual eue agent without further application of the repellent; and (iv) the concurrent application of a wavelengthspecific repellent agent, and a wavelength-specific visual eue agent to the target in an amount effective to repel dichromatic animais of interest. For each of these applications, the visual eue agent is applied at an amount sufficient for eliciting a relevant behavioral response in the dichromatic animal of interest.

Repellent agents which are suitable for use in the present disclosure include but are not limited to anthraquinones, flutolanil, anthrandates, methiocarb, caffeine, chlorpyrifos, cyhalothrin, methyl phenyl acetate, ethyl phenyl acetate, o-amino acerophenone, 2-amino-4,5dimethyl ecetophenone, veratroyl amine, cinnamic aldéhyde, cinnamic acid, cinnamide, allyl isothiocyanate, capsaicin, TRPVl, denatonium benzoate, quebracho, sucrose octaacetate, quinine, quinine hydrochloride, magnésium sulfate, o-aminoacetophenone, emetine dihydrochloride, aluminum ammonium sulphate, putrescent and volatile animal products (e.g. eggs, urine, blood meal, castor oil), putrescent and volatile plant products (e.g. pine needle oil, garlic oil, sinigrin), d-pulegone, thiram, glucosinolate, polygodial, piperîne (e.g. Zanthoxylum piperïtum), and combinations thereof.

In accordance with the present disclosure, the methods for attracting dichromatic animais from a target can be accomplîshed by at least any of the following approaches: (i) the application of a wavelength-specific visual eue agent to a target in an amount effective to attract dichromatic animais; (ii) the application of an initial treatment of a wavelengthspecific attractant agent to the target în an amount effective to attract dichromatic animais, and the subséquent application of a wavelength-specific visual eue agent in combination with same or reduced application rate of the attractant; (iii) the application of an initial treatment of a wavelength-specific attractant agent to the target in an amount effective to attract dichromatic animais, and the subséquent application ofa wavelength-specific visual eue agent without further application of the attractant; and (iv) the concurrent application of a wavelength-specific attractant agent, and a wavelength-specific visual eue agent to the target in an amount effective to attract dichromatic animais of interest. For each of these applications, the visual eue agent is applied at an amount sufficient for eliciting a relevant behavioral response in the dichromatic animal of interest.

Attractant agents which are suitable for use in the present disclosure include but are not limited to food-based agents (e.g. grains and grain products, seeds and seed products, nuts and nut products, nut butter, fruit and fruit products, dairy products, confectionery ingrédients), energy (e.g. plant fats, animal fats), protein, and combinations thereof.

As stated above, the visual eue agent preferably exhibits spectral characteristics sufficiently similar to those of the repellent or attractant agent depending upon which it is being used with. Spectral characteristics include reflectants, absorbents, réfractants as well as UV and IR wavelengths. It is preferred that the visual eue agent exhibit the spectral characteristics within 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41,42, 43, 44, 45, 46, 47, 48, 49, or 50 nm ofthe spectral characteristics of the repellent or attractant agent. These values can be used to define a range, such as a visual eue agent exhibiting spectral characteristics within the range of 10 to 15 nm, or 20 to 35 nm, or 40 to 50 nm of the spectral characteristics of the repellent or attractant agent. Suitable visual eue agents of the présent disclosure preferably exhibit spectral characteristics sufficiently similar to the previously or concurrently-applied repellent or attractant treatment such that the dichromatîc animal of interest preferably does not visually differentiate between the visual eue agent and the repellent or attractant agent or the formulation of the first treatment formulation containing the repellent or attractant agent. For example, by way of illustration and without being limited thereto, one effective repellent, anthraquinone, exhibits UV-A (320-400 nm) and/or UV-B (280-320 nm) absorbance. For purposes of the présent disclosure, a suitable visual eue agent could exhibit UV or IR absorbance, réflectance or refraction at or sufficiently near the wavelengths of the repellent or attractant agent (e.g. ± 10-50 nm as described above). The UV or IR spectra of repellent or attractant agents and visual eue agents may be readily determined using conventional spectroscopic analysis techniques.

Some examples of visual eue agents for use in the présent disclosure include, but are not limited to, titanium (IV) oxides (TiOi), trisïloxanes, siloxanes, other UV-absorbent and UVrefleclive agents (100-400 mn), and infrared agents (>700 nm).

In certain embodiments, the présent disclosure provides improved methods and compositions for repelling dichromatîc animais using reduced amounts of the repellent agent applied throughout the period of needed repellency (e.g. < 95% of the amount of the repellent agent necessary to achieve > 5% repellency without this invention).

il

In other embodiments, the present disclosure provides improved methods and compositions for repelling dichromatic animais utilizing multiple applications of repellent agents wherein the amount of the repellent agents may be reduced after the initial application (e.g. < 95% of the amount ofthe repellent agent associated with its initial application).

In one embodiment of the present disclosure, the use of repellent agents in combination with wavelength-specific visual eue agents that exhibit spectral characteristics sufficiently similar to the repellent agent such that the amount of the repellent agent may be reduced as compared to previously-applied repellent agent while maintaining the ability to maintain effective repellency of dichromatic animais ( e.g. < 95% of the amount of the repellent or attractant agent associated with its initial application).

In alternative embodiments, the present disclosure provides improved methods and compositions for attracting dichromatic animais using reduced amounts of the attractant agent applied throughout the period of needed attraction (e.g. < 95% of the amount of the repellent or attractant agent necessary to achieve > 5% attraction without this invention).

In other embodiments, the present disclosure provides improved methods and compositions for attracting dichromatic animais utilizing multiple applications of attractant agents wherein the amount of the attractant agents may be reduced after the initial application (e.g. < 95% of the amount ofthe attractant agent associated with its initial application).

In an alternative embodiment of the present disclosure, the use of attractant agents in combination with wavelength-specific visual eue agents that exhibit spectral characteristics sufficiently similar to the attractant agent such that the amount of the attractant agent may be reduced as compared to previously-applied attractant agent while maintaining the ability to maintain effective attraction of dichromatic animais ( e.g. < 95% of the amount of the repellent or attractant agent associated with its initial application).

In one embodiment of the present disclosure, the amount of the desired repellent or attractant agent used may vary from the initial application to subséquent applications. In this embodiment, the amount of the repellent or attractant agent to be used in the initial application (as well as any subséquent applications in the absence of visual eue agent) is selected to effectively repel or attract the dichromatic animal from a treated target (i.e. food or location). Thus, as used herein, an “effective amount” is defined as that amount which results in “effective repellency” or “effective attraction” as previously defined herein. The effective amount may vary depending upon the particular repellent or attractant agent that is selected, as well as the following additional variables: the formulation of the repellent/attractant, the spécifie dichromatic animal of interest, the target material and environmental factors (e.g. context of the application including alternative foods and locations, behavioral history). Effective amounts of repellent agents and attractant agents can be 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000, 6500, 7000, 7500, 8000, 8500, 9000, 9500, 10,000, 15,000, 20,000, 25,000, 30,000, 35,000, 40,000, 45,000, or 50,000 ppm. These values can be used to define a range, such as effective amounts in the range of 5000 to 20,000 ppm, or 1000 to 7500 ppm of repellent or attractant.

The effective amount can be readily determined by routine controlled expérimentation. By way of example and without being limited thereto, in the initial application, preferred amounts of anthraquinone (AViPEL® SHIELD, FLIGHT CONTROL® PLUS, AV-1011, AV2022 or AV-4044) are approximately 1-2% active ingrédient (wt/wt) for most dichromatic animais, but may be as low as 0.01% active ingrédient (wt/wt).

The term “subséquent applications” it is intended to be those applications wherein the repellent or attractant agent is combined with the desired visual eue agent after the initial application of the repellent or attractant agent. In certain embodiments, the amount of the repellent or attractant agent used in the subséquent applications can be the same as the initial application. Altematively, in certain embodiments, the amount of the repellent or attractant agent used in the subséquent applications can be reduced. In these subséquent applications, reduced amounts of the repellent or attractant agent may be 99%, 98%, 97%, 96%, 95%, 94%, 93%, 92%, 91%, 90%, 89%, 88%, 87%, 86%, 85%, 84%, 83%, 82%, 81%, 80%, 79%, 78%, 77%, 76%, 75%, 74%, 73%, 72%, 71%, 70%, 69%, 68%, 67%, 66%, 65%, 64%, 63%, 62%, 61%, 60%, 59%, 58%, 57%, 56%, 55%, 54%, 53%, 52%, 51%, 50%, 49%, 48%, 47%, 46%, 45%, 44%, 43%, 42%, 41%, 40%, 39%, 38%, 37%, 36%, 35%, 34%, 33%, 32%, 31%,

30%, 29%, 28%, 27%, 26%, 25%, 24%, 23%, 22%, 21%, 20%, 19%, 18%, 17%, 16%, 15%, 14%, I3%, 12%, 1l%, 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, or 1% (wt/wt) of repellent or attractant agent. These values can be used to define a range such as 95% - 50% of repellent or attractant. It is further contemplated that the repellent or attractant can be reduced to as low as 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, or 0.9%, (wt/wt) of repellent or attractant agent. These values can be used to defïne a range, such as 0.01-0.1% (wt/wt) of repellent or attractant agent. In even further embodiments, the amount of the repellent or attractant agent used in the subséquent applications can omitted completely.

It is further contemplated by the présent disclosure that in certain embodiments, the one or more desired Visual eue agent(s) used in combination with the original or reduced amount of repellent or attractant agent is applied in amounts that are effective in at least maintaining the level of effective repellency or effective attraction that was accomplished by the repellent or attractant alone. The synergy of this invention is characterized by greater behavioral response to the combination of a visual eue and a repellent or a visual eue and an attractant, relative to the behavioral response observed for the visual eue, the repellent or the attractant when applied independently (not in combination). The effective amount (having the same meaning as previously provided) of the visual eue agent may vary depending upon the particular repellent or attractant agent that is selected, as well as the following additional variables: the formulation of the repellent/attractant, the spécifie dichromatic animal of interest, the target material and environmental factors (e.g. context of the application including alternative foods and locations, behavioral history). Effective amounts of visual eue agents can be 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000, 6500, 7000, 7500, 8000, 8500, 9000, 9500, 10,000, 15,000, 20,000, 25,000, 30,000, 35,000, 40,000, 45,000, or 50,000 ppm. These values can be used to define a range, such as effective amounts in the range of 2000 to 5000 ppm, or 4000 to 7000 ppm.

By way of exaniple and without being limited thereto, one effective visual eue agent is titanium (IV) oxide, and effective amounts of titanium (IV) oxide may vary from 2,000 to

5,000 ppm (AEROXIDE® P25, Evonik Goldschmîdt Corp., Hopewell, VA) to 3,500 to 5,000 ppm (Catalog no. 232033 available from Aldrich, St. Louis, MO) to 4,000 to 7,000 ppm (Catalog no. 808 available from Merck & Co., Whitehouse Station, NJ; HOMB1KAT UV 100 available from Sachtleben, Duisburg, Germany; Catalog no. 89490 available from Aldrich, St. Louis, MO.; Catalog no. T315-500 available from Fisher Scientific, Pittsburgh, PA).

In certain embodiments, the repellent and attractant agents may be formulated with one or more suitable înert carriers as is well known in the art. Formulations of repellent and attractant agents as well as the visual eue agents may vary with the particular target and method of application. The repellent, attractant and visual eue agents may, for example, be formulated as solutions, émulsions, emulsifiable concentrâtes, suspension concentrâtes, wettable powders, dusts, granules, adhèrent dusts or granules, and aérosols. Of greatest interest are those carriers which are agronomically acceptable and those suitable for application onto structures, agricultural fields or crops, seeds, seedlings, orchards, vineyards, livestock feed, fertilizers, pesticides, animal or insect baits, and combinations thereof. The particular carrier selected is not critical, and a variety of liquid and solid phase carriers may be used, including but not limited to water, aqueous surfactant mixtures, alcohols, ethers, hydrocarbons, halogenated hydrocarbons, glycols, ketones, esters, oils (natural or synthetic), clays, kaolinite, silicas, cellulose, rubber, talc, venniculate, and synthetic polymers, The repellent and attractant agents, and the visual eue agent may also be formulated in a single composition or formulated in different compositions and applied separately. The repellent and attractant agents and/or the visual eue agent may also be formulated in admixture with other agriculturally bénéficiai agents, including but not limited to, UV or IR stabilizers, antioxidants, baits, adjuvants, herbicidal agents, fertilizers, and pesticides including insecticides and fungicides.

The method of the invention may be used to repel or attract dichromatic animais anywhere they pose a nuisance or, more importantly, to prevent or minimize économie damage, particularly to agricultural products, natural resources, or private property. The repellent and attractant agents, and the visual eue agent may be applied on any target or spatial location of concem from (to) which dichromatic animais are to be repelled (or attracted). In accordance with this invention, preferred targets for application include, but are not limited to, one or more of structures, agricultural fields or crops, seeds, seedlings, orchards, vineyards, livestock feed, fertilizers, pesticides, animal or insect baits, and combinations thereof, Crops include, but are not limited to, one or more of corn, fruit, grains, grasses, legumes, lettuce, millet, oats, rice, row crops, sorghum, sunflower, tree nuts, turf, vegetables, and wheat,

The subséquent treatments of the target with the repellent or attractant agent, and the visual eue agent are typically applied at any time following the initial application desired by the user. For instance, in one anticipated embodiment, the subséquent treatments are applied during periods when heavier damage is anticipated. In practice, the subséquent treatment is typically applied at least one week after the first treatment (in the same growing season).

Dichromatic animais are those animais that use only two distinct types of photoreceptors for color vision, generally including placental mammals and excluding sea mammals (pinnipeds and cetaceans; monochromats), primates closely related to humans (i.e. trichromats) and most birds (tetrachromats).

Targets comprise structures, agricultural fields or crops, seeds, seedlings, orchards, vineyards, livestock feed, fertilizers, pesticides, animal or insect baits, or combinations thereof, Crops comprise com, fruit, grains, grasses, legumes, lettuce, millet, oats, rice, row crops, sorghum, sunflower, tree nuts, turf, vegetables, or wheat.

The following examples are intended only to further illustrate the invention and are not intended to limit the scope of the invention which is defined by the claims.

EXAMPLES

It is understood that the foregoing detailed descriptions are given merely by way of illustration and that modifications and variations may be made therein without departing from the spirit and scope of the invention.

Exaniples - Repellent application strategy for wild rodents and cottontail rabbits

Effective Chemical repellents and repellent application strategies are needed to manage damages caused by wild rodents and rabbits to agricultural resources. For the purpose of comparatively investigatîng the behavioral response of wild rodents and rabbits to a Chemical repellent, the concentration-response relationship of an anthraquinone-based repellent in California voles (Microtus californiens Peale), Richardson's ground squirrels (Urocitellus richardsonii Sabine), deer mice (Peromyscus manicidatus Wagner) and cottontail rabbits (Sylvilagus aiidubonii Baird) in captivity were evaluated. 52-56% feeding repellency for whole oats treated with 10,800 ppm anthraquinone or 18,500 ppm anthraquinone was observed in mice and squirrels, and 84-85% repellency for oats treated with 18,300 ppm anthraquinone or 19,600 ppm anthraquinone was observed in voles and rabbits, respectively. In addition to providing the négative postîngestive conséquences necessary for conditioned food avoidance, the anthraquinone-based repellent also absorbs ultraviolet (UV) wavelengths that are visible to most wild birds. For the purpose of developing a repellent application strategy to modify the behavior of vertebrate pests, a conditioned avoidance experiment was conducted by offering repellent- and UV-treated food to California voles in a subséquent behavioral assay. Relative to unconditioned test subjects (P = 0.3161 ), voles conditioned with the UV, postîngestive repellent subsequently avoided whole oats treated only with an UV eue (P = 0.0109). These behavioral responses to anthraquinone-based repellents and UV feeding eues are exploited as a repellent application strategy for wild mammals. Preplant seed treatments and surface treatments that include postîngestive repellents and related visual eues can be used for the protection of agricultural resources associated with mammalian déprédation.

The opportunistic feeding behavior and fecundity of some wild rodents and rabbits cause économie losses annually lo world-wide agricultural production (Gebhardt et aL, 2011, Jacob and Tkadlec, 2010, Johnson and Tinim, 1987, Pelz, 2004, Salmon, 2008 and Witmer and Singleton, 2010). For example, voles (Microtus spp. Schrank and Arvicola spp. La Cépède) are known to cause damage in the United States of America and Europe to agricultural crops such as alfalfa, peas and wheat, and reforestation efforts (Baldwin, 2014, Giusti, 2004, Jacob and Tkadlec, 2010, Sullivan and Sullivan, 2008 and Witmer et al., 2007). Ground squirrels (Spermophihis spp. Cuvier) cause millions of dollars of damage to alfalfa production în the western United States and Canada (Johnson-Nistler et al., 2005 and Proulx, 2010). Ground squirrels caused SI7.9-23.9 million in crop losses and $l 1.9-17.9 million (dollars projected for 2016 valuation) in physical damages to materials such as structures, levees and earthen dams as well as damages to nut crops, tree fruits and rangeland forage (Baldwin et al., 2013, Marsh, 1998). Deer mice (Pero/nyscus spp. Gloger) cause damage to corn, almonds, avocados, cîtrus, pomegranate and sugar beet crops (Pearson et al., 2000 and Wîtmer and Moulton, 2012). Cottontail rabbits (Sylvilagus fîoridanus Allen) damage tree seedlings, shrubs, hay, soybean and rangeland forage (Dugger et aL, 2004, Johnson and Timm, 1987).

Agricultural déprédation caused by wild rodents and rabbits is a persistent problem with few cost-effective solutions. Methods to alleviate damage caused by wild rodents and rabbits include behavioral applications (e.g. physical exclusion, Chemical repellents) and léthal removal. The need for effective solutions to mammal déprédation remains despite prior évaluations of numerous Chemical repellents (Agnello et al., 2014, Baldwin et al., 2014, Gumey et al., 1996, Moite and Bamett, 2000, Nolte et al., 1993, Sutherland, 2000 and Williams and Short, 2014). The effectiveness and commercial development of wildlife repellents are dépendent upon the repellent’s efficacy under field conditions, cost relative to expected damages of unprotected resources, environmental impacts, and food and feed safety (Wemer et al., 2009).

Although anthraquinone is a naturally-occurring compound that was identified as a promising avian repellent in the early 1940s (Heckmanns and Meisenheimer, 1944), an anthraquinonebased seed treatment (AV-1011; Arkion® Life Sciences, New Castle, DE, USA) was first registered by the United States Environmental Protection Agency for the protection of newlyplanted rice in January 2016. Anthraquinone has been used to effectively repel blackbirds (Avery et al., 1997, 1998; Carlson et al., 2013; Cummings et al., 2002a,b, 2011; Neff and Meanley, 1957; Wemer et al., 2009, 2011a, 2014b,c), Canada geese (Branta canadensis Linnaeus; Blackwell et al., 1999; Dolbeer et al., 1998; Wemer et al., 2009), sandhill crânes (Gnis canadensis Linnaeus; Blackwell et al., 2001), ring-necked pheasants (Phasianns colchicus Linnaeus; Wemer et al., 2009), European starlings (Stunuis vidgaris Linnaeus; Tupper et al., 2014), wild turkeys (Meieagrisgallopavo Linnaeus; Wemer et al., 2014a), homed larks (Eremophila alpestris Linnaeus), great-tailed grackles (Quiscalus mexicanus Gmelin) and American crows (Corvus brachyrhynchos Brehm; Wemer el al., 2015),

Relatively few studies, however, hâve evaluated anthraquinone as a mammalian repellent. Santillî et al. (2005) discovered that wild boar (Sus scrofa Linnaeus) consumed 86.5% less corn treated with 0.64% anthraquinone than untreated com. Wemer et al. (201 Ib) observed 24-37% repellency in black-tailed prairie dogs (Cynomys ludovicianns Ord) offered com seeds treated with 0.5^4.0% anthraquinone. Cowan et al. (2015) observed an aversion to anthraquinone-treated baits in black rats (Ratlus rattus Linnaeus; 0.1% and 0.25% anthraquinone) and possums (Trichosurus vulpecida K.err; 0.25% anthraquinone). Relative to the consumption of control baits (0.01-0.03% cinnamon, green carrots), the consumption of anthraquinone-treated baits was less in brown rats (R. norvégiens Berkenhout; 0.04% and 0.08% anthraquinone) and no different in possums (T. vulpecida, 0.08% anthraquinone;

Clapperton et al., 2015). Although Hansen et al. (2015) observed that female common voles (M. arvalis Pallas) consumed 47% less wheat treated with 5% anthraquinone and chloroform than wheat treated only with chloroform, Hansen et al. (2016) found no différence in consumption of wheat treated with 15% anthraquinone and chloroform in male common voles and greater consumption of wheat treated with 15% anthraquinone and chloroform in male house mice (Mus imisculus Linnaeus) relative to wheat treated only with chloroform.

Comparative investigation was performed on the behavioral response of wild rodents and rabbits to a Chemical repellent, and an effective application strategy for the protection of agricultural resources commonly damaged by these wild mammals was developed. The investigation included (1) experimentally evaluating the concentration-response relationship of an anthraquinone-based repellent for California voles (M. californiens Peale), Richardson’s ground squirrels (Urocitellus richardsonii Sabine), deer mice (P. maniculatus Wagner) and cottontail rabbits (S. audubonii Baird), and (2) developing a repellent application strategy by exploiting the behavioral responses of wild rodents and rabbits to anthraquinone-based repellents and associated visual eues. The investigation also included the conditioned avoidance of UV visual eues subséquent to exposure to an UV, postingestive repellent in California voles.

Four concentration-response feeding experiments were conducted at the headquarters of the National Wildlife Research Center (NWRC) in Fort Collins, Colorado (USA). 38 California voles were captured adjacent to commercial artichoke fields in California USA, 28 Richardson’s ground squirrels within alfalfa fields in Montana, and 34 deer mice and 30 cottontail rabbits adjacent to NWRC-Fort Collins using appropriate Scientific Collection Permits. 8-10 test subjects per treatment group were used (Wemer et al, 2009, 201 Ib) and thus 3-4 concentrations for each of the four tested species based upon the availability of test subjects subséquent to live-captures. The capture, care and use of ail test subjects associated with each experiment were approved by the NWRC Animal Care and Use Committee (NWRC Study Protocols QA-2104, QA-2243, QA-2333; S.J. Wemer- Study Director).

AU test subjects were offered a maintenance diet for at least one week prior to each of the feeding experiments (i.e. quarantine, holding). For the purpose of comparatively investigating the intra- and interspecific efficacy of a Chemical repellent. ail test subjects were maintained within individual cages throughout the experiments (quarantine, holding, acclimation, pre-test, test). California voles, Richardson’s ground squirrels and cottontail rabbits were maintained within visually-isolated, individual cages (23 ^x4l ^x 18-cm cages for voles, 62 x 50 x 42-cm for ground squirrels, 62 * 50 x 42-cm for rabbits) in an NWRC indoor animal research building. Deer mice were maintained within individual cages (46 x 24 x 19-cm) in the NWRC outdoor animal research facility throughout the experiment to reduce the potentiel exposure of researchers to hantavirus. Free access to water and environmental enrichment were provided to ail test subjects throughout the feeding experiments.

An anthraquinone-based repellent (Avipel® Shield, active ingrédient: synthetic 9,10anthraquinone; Arkion Life Sciences, New Castle, DE, USA) was used for each of the experiments (Wemer et al., 2009, 2010, 201 la,b). Seed treatments for ail concentrationresponse experiments were formulated by applying aqueous suspensions ( 100 ml/kg) to the test diet using a rotating mixer and household spray equipment (Wemer et al., 2014a). The test diet for each of the concentration-response feeding experiments was whole oats. Without wishing to be bound, it is believed that repellency is directly related to repellent concentration during the concentration-response experiments. >80% repellency was operationally defined as efficacious during the laboratory feeding experiments (Wemer et aL, 2009, 201 la, 20l4a,b,c). As such, consumption of efficacious treatments (i.e. threshold repellency) is <20% of average, pre-test consumption during the concentration-response experiments.

For each test group, the dépendent measure of the concentration-response experiments was calculated as average test consumption of treated test diet relative to average, pre-test consumption of untreated test diet (i.e. percent repellency). The NWRC Analytical Chemistry Unit used high performance liquid chromatography to quantify actual anthraquinone concentrations (± 10-100 ppm AQ) among the anthraquinone-treated test diets (Wemer et al., 2009, 201 la, 20l4a,b,c, 2015). A non-linear régression procedure was used (SAS v9.1) to analyze percent repellency as a function of actual anthraquinone concentration (ppm). When non-linear relationships were observed for repellency and repellent concentration (a < 0.05), it was predicted that the threshold anthraquinone concentration needed to achieve 80% feeding repellency. Descriptive statistics were used (x ± S.E.M.) to summarize anthraquinone dosage for observed threshold repellency (mg anthraquinone/kg body mass [BM]).

Example 1 - California vole feeding experiment

For the purpose of identifying an effective Chemical repellent for wild rodents, this experiment involved concentration-response testing of the anthraquinone-based repellent with California voles in captîvity. The maintenance diet for California voles included rodent blocks (LabDiet® 5001; Land O'Lakes, St. Louis, MO, USA) and apple slices. Thirty eight California voles (experimentally-naïve) were available for this feeding experiment. Ail voles acclimated within individual cages for five days (Wednesday-Sunday). During the accliraation period, one food bowl that contained untreated oats (ad libitum) was presented on the north side of each cage at 0800 h, daily.

During the three days subséquent to the acclimation period (Monday-Wednesday), one bowl (30.0 g untreated oats) was presented on the north side of each cage at 0800 h, daily. Daily food consumption (including spillage and desiccation) was measured (± 0.1 g) at approximately 0800 h on Tuesday-Thursday. Voles were ranked based upon average, prétest consumption and assigned to one of four test groups at the conclusion of the pre-test (n = 8-10 voles per group) such that each group was similarly populated with voles that exhibited high-low daily consumption (Werner et al., 2009, 2010, 201 la,b). Test treatments among groups (i.e. experimental units) were randomly assigned.

On the day subséquent to the pre-test (Thursday), one bowl (30.0 g anthraquinone-treated oats) was presented on the north side of each cage at 0800 h. Voles in Groups l-4 received whole oats treated with 0.25%, 0.5%, l.0%, or 2.0% anthraquinone, respectively (target concentrations, wt/wt). Daily food consumption (including spillage and desiccation) was measured at approximately 0800 h on Friday.

California voles exposed to whole oats treated with 0.25-2.0% anthraquinone exhibited 24— 84% repellency during the concentration-response experimenl (Fig. I). Actual anthraquinone concentrations from our anthraquinone-treated oats ranged from 2,050-18,300 ppm anthraquinone (Fig. 1 ). Thus, California voles exhibited 84% repellency for whole oats treated with 18,300 ppm anthraquinone, or 365.0 ± 103.1 mg anthraquinone/kg BM (mean vole BM = 38.1 g). Vole repellency (y) was a function of anthraquinone concentration (x): y = 26.828 ln(x) - 174.795 (r² = 0.95, P = 0.0267). A threshold concentration of about 13,400 ppm anthraquinone was predicted for Califomia voles offered treated oats. The results of this laboratory efficacy experiment suggest that a threshold concentration of 1.3% anthraquinone (wt/wt) can effectively repel Califomia voles from treated food.

Another experiment was conducted to illustrate the repellency of an UV-absorbent feeding eue subséquent to two-day exposure to an UV-absorbent, postingestive repellent (i.e., 9,10anthraquinone) in a dichromatic animal, the California vole (Microtus californiens). Sixteen Califomia voles (voles) were each offered two bowls of untreated oats for three days. Voles were ranked based upon average pre-test consumption and assigned to one of two test groups at the conclusion of the pre-test (/? = 8 voles per test group). Test treatments (i.e. repellentexposed, unexposed) were then randomly assigned among test groups.

During the two-day exposure period, voles in the unexposed group were offered untreated oats in both food bowls, daily. For the purpose of establishing the cognitive association between UV-absorbent food and its négative postingestive conséquence, voles in the repellent-exposed group were offered oats treated with 0.25% anthraquinone (target concentration; wt/wt) in both food bowls, daily (Wemer et al. 2008, 2012, 2014a).

During the four-day test, ail voles were offered one bowl of untreated oats and one bowl of oats treated with 0.2% of an UV-absorbent feeding eue (Wemer et al. 2012, 2014a,b), daily. The UV-treated oats were randomly placed on the First day and thereafter altemated treatment locations within ali test cages, daily, throughout the test. Daily oat consumption was measured on the day subséquent to each test day.

A statistically significant treatment effect was observed between treatment groups (i.e. groupby-treatment interaction; P = 0.0146). Voles that were exposed to the UV-absorbent, postingestive repellent subsequently avoided UV-absorbent oats relative to untreated oats throughout the four-day test (i.e. 42% repellency was observed in repellent-exposed group; P = 0.0109; Figure 5). In contrast, voles that were not exposed to the UV-absorbent. postingestive repellent consumed similar amounts of untreated oats and oats treated with the UV-absorbent feeding eue during the test (i.e. <l% repellency was observed in repellentunexposed, or control group; P = 0.316l ; Figure 5). Thus, a dichromatic animal responded behaviorally to an UV-absorbent feeding eue.

These data demonstrate that, in the absence of pre-test exposure to the repellent, consumption of food treated with the UV-absorbent eue was not different than that of untreated food.

Subséquent to exposure to the UV-absorbent, postingestive repellent, however, dichromatic animais significantly avoided the UV-absorbent eue during the test. Thus, by using visual eue agents that exhibit spectral characteristics sufficiently similar to the previously-applied repellent treatment (e.g. ± 10-50 nm), the amount of the repellent agent may be reduced (or even omitted; Example 3) and yet effectively repel dichromatic animais. The synergy observed in this Example was characterized by greater behavioral response to the combination of a visual eue and a repellent relative to the behavioral response observed for the visual eue alone (i.e. not in combination with the repellent).

Example 2 - Richardson’s ground squirrel feeding experiment

This experiment involved concentration-response testing of the anthraquinone-based repellent with Richardson’s ground squirrels in captivity. The maintenance diet for Richardson’s ground squirrels included rodent blocks (LabDiet® 5001 ; Land O’Lakes, St. Louis, MO, USA), apple slices and carrots. The test procedures of our previous concentration-response experiment were replicated with 28 Richardson’s ground squirrels (experimentally-naïve) within individual cages (i.e. acclimation, pre-test, test). Test groups l-3 (/; = 9-10 ground squirrels per group) received whole oats treated with 0.5%, 1.0%, or 2.0% anthraquinone (target concentrations, wt/wt), respectively, during the test.

40-56% feeding repellency was observed among Richardson’s ground squirrels offered whole oats treated with target concentrations of 0.5-2.0% anthraquinone (Fig. 2). Actual anthraquinone concentrations from the oat seed treatments ranged from 5,380-18,500 ppm anthraquinone (Fig. 2). Ground squirrel repellency was weakly related to actual anthraquinone concentrations (r~ = 0.95; P = 0.1458). 56% repellency was observed for whole oats treated with 18,500 ppm anthraquinone in Richardson’s ground squirrels.

An additional experiment was conducted to illustrate the synergistic repellency of an UVabsorbent. postingestive repellent (i.e., 9,10-anthraquinone) combined with an UV feeding eue (e.g. titanium dioxide) in dichromatic animais, Richardson’s ground squirrels (Urocitellus richardsonii) and deer mice (Peroniyscus manicidatus). Up to forty Richardson’s ground squirrels (ground squirrels) and up to forty deer mice (mice) were each offered one bowl of untreated oats for three days. For each experiment, test subjects were ranked based upon average pre-test consumption and assigned to one of four test groups at the conclusion of the pre-test (h = 10 test subjects per group). Test treatments were then randomly assigned among test groups. During the one-day test, one bowl of repellent-treated oats was offered to each test subject. Test subjects in Groups 1-4 received oats treated with 0.05%, 0.1%, 0.25% or 0.5% anthraquinone during the test (i.e. target concentrations; wt/wt). Test treatments also included 0.2% of an UV feeding eue (e.g. titanium dioxide). Daily oat consumption was measured on the day subséquent to the test.

Ground squirrels exhibited 30-75% repellency for oats treated with 0.05-0.5% anthraquinone and 0.2% of an UV feeding eue. Mice exhibited 15-75% repellency for oats treated with 0.05-0.5% anthraquinone and 0.2% of an UV feeding eue. Synergistic repellency was observed for food treated an UV-absorbent, postingestive repellent and an UV feeding eue in dichromatic animais.

Example 3- Deer niouse feeding experinient

This experiment involved concentration-response testing of the anthraquinone-based repellent with deer mice in captivity. The maintenance diet for deer mice included rodent blocks (LabDiet® 5001; Land O'Lakes, St. Louis, MO, USA) and apple slices. The test procedures of our previous concentration-response experiments were replicated with 34 deer mice (experimentally-naïve) within individual cages (i.e. acclimation, pre-test, test). Test groups 1—4 (n = 8-9 mice per group) received whole oats treated with 0.25%, 0.5%, 1.0%, or 2.0% anthraquinone (target concentrations, wt/wt), respectively, during the test.

Deer mice exposed to whole oats treated with target concentrations of 0.25-2.0% anthraquinone exhibited 19-52% repellency during the concentration-response experiment (Fig. 3). Actual anthraquinone concentrations from our oat seed treatments ranged from 2,820-19,900 ppm anthraquinone (Fig. 3). Deer mouse repellency was weakly related to actual anthraquinone concentrations (r² = 0.89; P = 0.0580).

52% repellency was observed for whole oats treated with 10,800 ppm anthraquinone in deer mice.

Example 4- Cottontail rabbit feeding experiment

This experiment involved concentration-response testing of the anthraquinone-based repellent with cottontail rabbits in captivity. The maintenance diet for cottontail rabbits included Rabbit Chow® (Purina® Mills, St. Louis, MO, USA), apple slices and alfalfa hay. The test procedures of our previous concentration-response experiments were replicated with 30 cottontail rabbits (experimentally-naïve) within individual cages (i.e. acclimation, pre-test, test). Test groups l-3 (n = 10 rabbits per group) received whole oats treated with 0.5%, l .0%, or 2.0% anthraquinone (target concentrations, wt/wt), respectively, during the test.

68-85% feeding repellency was observed among cottontail rabbits offered whole oats treated with target concentrations of 0.5-2.0% anthraquinone (Fig. 4). Actual anthraquinone concentrations from our oat seed treatments ranged from 4,790-19,600 ppm anthraquinone (Fig. 4). Rabbit repellency was weakly related to actual anthraquinone concentrations (r² = 0.99; P = 0.0757). 85% feeding repellency was observed, however, among rabbits offered whole oats treated with 19,600 ppm anthraquinone. Thus, cottontail rabbits were effectively repelled from whole oats treated with a target concentration of 2.0% anthraquinone (Fig. 4), or 149.9 ± 28.1 mg anthraquinone/kg BM (mean rabbit BM = 0,8 kg).

85% repellency was observed for whole oats treated with 19,600 ppm anthraquinone in cottontail rabbits. It is believed that field efficacy testîng of foliar repellent applications for the protection of tree seedlings, shrubs, hay, soybean and rangeland forage associated with damages caused by cottontail rabbits can be successfully performed. Field efficacy experiments can include: (1) application strategies that are specifically developed to protect agricultural crops from mammalian déprédation; (2) independent field replicates with predicted rodent or rabbit damage; (3) varied application rates based upon species-specific threshold concentrations, including untreated Controls; (4) pre- and at-harvest analytical chemistry; (5) crop damage measurements; and (6) crop yield measurements (Wemer et al., 201 la).

Another experiment was conducted to illustrate the repellency of an UV-absorbent, postingestive repellent (i.e., 9,10-anthraquinone) in a dichromatîc animal, the cottontail rabbit (Sylvilagus audubonii). Thirty cottontail rabbits (rabbits) were each offered one bowl of untreated oats for three days. Rabbits were ranked based upon average pre-test consumption and assigned to one of three test groups at the conclusion of the pre-test (n = 10 rabbits per test group). Test treatments were then randomly assigned among test groups. During the one-day test, one bowl of repellent-treated oats was offered to each test subject. Rabbits in Groups 1-3 received oats treated with 0.5%, 1% or 2% anthraquinone during the test (i.e.

target concentrations; wt/wt). Daily oat consumption was measured on the day subséquent to the test.

Rabbits exhibited 68%, 75% and 85% repellency for oats treated with 4,790 ppm, 10,300 ppm and 19,600 ppm anthraquinone, respectively (actual concentrations determined via high performance liquid chromatography; Figure 4). Thus, similar to tetrachromatic birds with retinal cônes that are maximally sensitive to UV waveiengths (Wemer et al. 2009, 2011, 2014a,b), a dichromatic animal exhibited efficacious repellency for food treated an UVabsorbent, postingestive repellent.

A further experiment was conducted to illustrate the synergistic repellency of an UVabsorbent, postingestive repellent (i.e., 9,10-anthraquinone) combined with an UV feeding eue (e.g. titanium dioxide) in a dichromatic animal, the cottontail rabbit (Sylvilagus audubonii). Thirty cottontail rabbits (rabbits) were each offered one bowl of untreated oats for three days. For the first and second experiments, test subjects were ranked based upon average pre-test consumption and assigned to one of three and one of four test groups at the conclusion of the pre-test, respectively. Test treatments were then randomly assigned among test groups. During the one-day test, one bowl of repellent-treated oats was offered to each test subject. For the first experiment, test subjects received oats treated with 0.5%, 1% or 2% anthraquinone and 0.2% of an UV feeding eue (titanium dioxide) during the test (i.e. target concentrations; wt/wt). For the second experiment, Groups 1 & 2 received oats treated with 0.1% or 0.25% anthraquinone during the test (i.e. target concentrations; wt/wt); Groups 3 & 4 received oats treated with 0.1% or 0.25% anthraquinone and 0.2% of the UV feeding eue. Daily oat consumption was measured on the day subséquent to the tests for each of Experiments 1 & 2.

Relative to the prior experiment 1, rabbits in the earlier experiment exhibited up to 3% greater repellency for oats treated with 0.5-2% anthraquinone and 0.2% of an UV feeding eue. Relative to the repellency of oats treated only with the anthraquinone repellent, rabbits in the later experiment exhibited up to 5% greater repellency for oats treated with a combination of 0.1-0.25% anthraquinone and the UV feeding eue.

A synergistic repellency was observed for food treated an UV-absorbent, postingestive repellent and an UV feeding eue in dichromatic animais. The synergy observed in this Example was characterized by greater behavioral response to the combination of a visual eue and a repellent relative to the behavioral response observed for the repellent alone (i.e. not in combination with the visual eue).

Example 5 - Conditioned avoidance experiment with ultraviolet feeding eue

Unlike most tested birds (Aidala et al., 2012, Bennett and Cuthill, 1994 and Cuthill et al., 2000), most tested mammals do not exhibit UV vision (Honkavaara et al., 2002, Hut et al., 2000, Jacobs, 1992, Jacobs and Yolton. 1971, Jacobs et al., 1991 and Tovee, 1995). Anthraquinone-based repellents provide the négative postingestive conséquences and a relevant UV feeding eue necessary to condition avoidance of UV-treated food (Wemer et al., 2012, 2014a). Conditioned avoidance of UV-treated food subséquent to anthraquinone conditioning was tested in California voles. Seed treatments for the conditioned avoidance experiment were formulated by applying aqueous suspensions (60 ml/kg) to the test diet using a rotating mixer and household spray equipment (Wemer et al., 2012, 2014b).

Sixteen California voles (experimentally naïve) were used for this feeding experiment. The maintenance diet (apple slices and LabDiet® 5001, Land O’Lakes St. Louis, MO, USA) and water was again provided to ail voles within individual cages, daily. The anthraquinonebased repellent (Avipel® Shield; Arkion® Life Sciences, New Castle, DE, USA) and a titanium dioxide feeding eue (Aeroxide® P25; Acros Organics, Fair Lawn, NJ, U.S.A.) were used for the conditioned avoidance feeding experiment (Wemer et al., 2012, 2014a,b). A Genesys™ 2, 336002 spectrophotometer (Thermo Spectronic US, Rochester, NY, USA) was previously used to détermine that both the anthraquinone-based repellent and the titanium dioxide feeding eue absorb near UV wavelengths (Wemer et aL, 2012).

Ail voles acclimated within individual cages for fîve days (Wednesday—Sunday; Week l). Two food bowls (east and west side of each cage) of unadulterated oats were provided throughout the acclimation period. Two food bowls (unadulterated oats on east and west sides of cage) were presented at approximately 0800 h, daily for two days subséquent to acclimation (Monday and Tuesday; Week 2), Cages were ranked based upon pre-test consumption, assigned cages to one of two groups, and randomly assigned treatments between groups at the completion of the pre-test.

Two food bowls (east and west side of cage) were presented at approximately 0800 h, daily for two days subséquent to the pre-test (Wednesday and Thursday; Week 2). For the purpose of behavioral conditioning with the UV-absorbent, postingestive repellent, ail voles in the conditioned group (Group l ; n = 8) were exposed to oats treated with 0.25% anthraquinone (target concentration, wt/wt) in both food bowls. Ail voles in the unconditioned group (Group 2; n = 8) were exposed to unadulterated oats in both food bowls. Two food bowls were presented of the maintenance diet from approximately 0930 h on Friday (Week 2) through 0800 h on Monday (Week 3) to ali test subjects.

Two food bowls were presented at approximately 0800 h, daily for four test days (MondayThursday; Week 3). For the purpose of preference lesting with the UV-absorbent feeding eue subséquent to behavioral conditioning, Groups l and 2 received oats treated with 0.2% of the UV eue in one bowl, and untreated oats in the aitemate bowl, daily. UV-treated oats were randomly located on the first test day (i.e. east or west side of cage) and thereafter altemated daily throughout the test such that UV-treated and untreated oats were each offered twice on the east and west side of each cage. Oat consumption was individually measured in east and west food bowls in each cage throughout the test (i.e. approximately 0800 h, Tuesday Friday; Week 3).

The dépendent measure of the conditioned avoidance experiment was average (i.e. daily) test consumption of treated and untreated food. After conducting Levene’s test for equal variances (a = 0.05) and affirmatively inspecting the normality of resîduals, consumption data were subjected to a Welch’s analysis of variance. The group-by-treatment interaction was analyzed using a general linear model (SAS v9.l). Tukey-Kramer multiple comparisons were used to separate the means of the signîficant interaction (a = 0.05). Descriptive statistics (x ± S.E.M.) were used to summarize consumption of treated and untreated food throughout the conditioned avoidance experiment.

The two test groups consumed different amounts of UV-treated and untreated food during the four-day test (/-3,07 = 4.48, P = 0.0063). Relative to the consumption of untreated oats, voles conditioned with the UV-absorbent, postingestive repellent consumed fewer oats treated only with the UV-absorbent eue throughout the test (i.e. repellent-conditioned, Fig. 5). The repellent-conditioned group consumed an average of l .6 ± 0.3 g of UV-treated whole oats and 2.7 ± 0.3 g of untreated oats per day, throughout the test (Tukey-Kramer P = 0.0109).

In contrast, unconditioned voles consumed similar amounts of UV-treated oats and untreated oats throughout the test (Fig. 5). The unconditioned group consumed an average of 2.0 ± 0.3 g of UV-treated whole oats and 2.6 ± 0.2 g of untreated oats per day, throughout the test (Tukey-Kramer P = 0.3161). Thus, without prior conditioning with the UV-absorbent, postingestive repellent, the UV-absorbent eue was not itself aversive to California voles. Moreover, although California voles are not maximally sensitive to UV wavelengths, voles conditioned with the UV-absorbent, postingestive repellent subsequently consumed less food treated only with the UV-absorbent eue.

Because California voles consumed less ofthe test diet treated only with the UV-absorbent feeding eue subséquent to conditioning with the UV-absorbent, postingestive repellent (i.e. relative to the unconditioned control group; Fig. 5), we observed cue-consequence specificity (Domjan, 1985) for an UV visual eue and a postingestive repellent in a dichromatic rodent. Thus, similar to blackbîrds (Wemer and Provenza, 2011 ), California voles cognitively associate pre- and postingestive conséquences with visual eues, and reliably întegrate visual and gustatory expérience with postingestive conséquences to procure nutrients and avoid toxins. These visual eues include UV-absorbent and UV-reflectîve eues for mammalian feeding behavior. The behavioral responses of this study can be exploited as a repellent application strategy for the protection of agricultural resources. This application strategy comprises a postingestive repellent and a feeding eue with visual characteristics sufficiently similar to the repellent such that the repellent concentration can be decreased (i.e. to include 0% of the Chemical repellent subséquent to repellent exposure, Fig. 5) whilst maintaining or synergistically increasing repellent efficacy (Werner et al., 2014b).

The repellent application strategy described herein (i.e. UV, postingestive repellent and associated UV visual eue) has implications for several wild rodents and rabbits. Although the spectral sensitivity function peaks at 520 nm in California ground squirrels (i.e. VS visual pigments; Otospennophilus beecheyh Anderson and Jacobs, 1972), the lens of Mexican ground squirrels (Ictidomys mexicanus) exhibits of 265-370 nm (i.e. UVS visual pigments; Cooper and Robson, 1969). In Richardson’s ground squirrels, 50% of incident illumination is transmitted at 462 nm and 0.6% of light from 315—400 nm is transmitted by the lens (Douglas and Jeffrey, 2014). Although shortwave sensitive cônes (S) constitute only 5-15% of the cônes in deer mice, partial sequencing of the S opsin gene suggested UV sensitivity of the S cône visual pigment (Arbrogast et al., 2013). In house mice, 50% of incident illumination is transmitted at 313-337 nm and 81.7% of light from 315-400 nm is transmitted by the lens (Douglas and Jeffrey, 2014). The maximum optical transmittance (i.e. 94—96%) in albino rabbits was found between 630—730 nm; transmittance decreased to 50% at 400 nm and <1% at 380 nm (Algvere et al., 1993). In rabbits (Oryctolagus cuniculus Linnaeus), 50% of incident illumination is transmitted at 392 nm and 12.7% of light from 315-400 nm is transmitted by the lens (Douglas and Jeffrey, 2014). Based on the testing herein commercial development (e.g. pricing of optimized formulations) of a repellent application strategy comprising an UV, postingestive repellent and an associated UV feeding eue can be performed for wild rodents and rabbits.

52-56% feeding repellency was observed for whole oats treated with 10,800 ppm anthraquinone or 18,500 ppm anthraquinone in mice and squirrels, and 84-85% repellency for oats treated with 18,300 ppm anthraquinone or 19,600 ppm anthraquinone in voles and rabbits, respectively. Considérable interspecies variation was observed in the feeding behavior of these wild mammals offered food treated with the anthraquinone-based repellent. Similarly, it was predicted a threshold concentration of 1,450-1,475 ppm anthraquinone for Canada geese and red-winged blackbirds, 5,200 ppm anthraquinone for American crows, 9,200 ppm anthraquinone for common grackles (Qitiscalus quiscula Linnaeus) and 10,450 ppm anthraquinone for ring-necked pheasants (Wemer et al. 2009, 2011a, 2015). Thus, anthraquinone repellency is not inversely proportional to the body mass of the target animal and considérable interspecific variation exists for anthraquinone among tested mammals and birds. Species-specific efficacy may be required and treatment amounts determined for each further target animal under laboratory and field conditions.

Relative to unconditioned test subjects, voles conditioned with the UV, postingestive repellent subsequently avoided whole oats treated only with an UV eue. Similarly, redwinged blackbirds conditioned with the UV, postingestive repellent subsequently avoided UV-treated food relative to unconditioned blackbirds (Wemer et al. 2012). This ultraviolet strategy for repellent applications was recently developed for wild birds associated with agricultural crop déprédation (Wemer 2015). Relative to the repeliency of food treated only with the anthraquinone-based repellent, synergistic repeliency (i.e. 45-l 15% increase) was observed when 0.2% of the UV feeding eue was combined with 0.02% or 0.035% anthraquinone (wt/wt; Wemer et al. 2014b). This ultraviolet strategy for repellent applications is applicable for the management of damages caused by wild rodents and rabbits to plant and animal agriculture.

Among the wild mammals that we hâve experimentally offered food treated with 0.25-2% anthraquinone (wt/wt), the ranked efficacy of anthraquinone-based repellents in order of high-low repeliency was cottontail rabbits (68-85% repeliency), California voles (24—84% repeliency), Richardson’s ground squirrels (40-56% repeliency), deer mice (19-52% repeliency) and black-tailed prairie dogs (24—37% repeliency; Wemer et al. 2011 b). Interestingly, the transmittance of UVA wavelengths (315-400 nm) through the ocular media was estimated to be 13%, 0.6% and 0% in European rabbits (Oryctolagus cuiüculits Linnaeus), Richardson’s ground squirrels and black-tailed prairie dogs, respectively (Douglas and Jeffery, 2014). Thus, the efficacy of this UV, postingestive repellent is directly proportional to the known transmittance of UVA wavelengths in these wild mammals. The development of non-Iethal, UV repellent application strategies for wild mammals associated with human-wildlife conflicts can be performed.

Because inconsistent success has been observed among rodent repellent trials conducted under laboratory and field conditions, a progression of efficacy experiments (i.e. cage, then enclosure, then field studies) has been recommended for the reliable measurement of repeliency and the successfiil development of non-lethal wildlife repellents (Hansen et al.

2016b). Field enciosure experiments can be performed to further evaluate anthraquinonebased repellents and ultraviolet application strategies. The results of the present experiments can enable the design of supplémentai field efficacy experiments and the development of non-lethal repellents for wild rodents, rabbits and other wildlife associated with humanwildlife conflicts.

The experiments contained herein provide a novel investigation of an anthraquinone-based repellent and related visual eues for wild rodents and rabbits associated with damages to agricultural resources. 52-56% feeding repellency was observed for whole oats treated with 10,800 ppm anthraquinone or 18,500 ppm anthraquinone in deer mice and Richardson’s squirrels, and 84-85% repellency for oats treated with 18,300 ppm anthraquinone or 19,600 ppm anthraquinone in California voles and cottontail rabbits, respectively. Relative to unconditioned test subjects, voles conditioned with the UV, postingestive repellent subsequently avoided whole oats treated only with an UV eue. Thus, California voles cognitively associate pre- and postingestive conséquences with visual eues, and reliably integrate visual and gustatory expérience with postingestive conséquences to procure nutrients and avoid toxins. These behavioral responses to anthraquinone-based repellents and UV feeding eues are described herein as a repellent application strategy (or method) for the non-lethal management of agricultural déprédation caused by wild mammals. These methods can comprise a postingestive repellent and a feeding eue with visual characteristics sufficiently similar to the repellent such that the repellent concentration can be decreased whilst maintaining or increasing repellent efficacy.

Example 6

Three additional experiments were performed to illustrate the attractîveness of bail formulations including an UV feeding eue in dichromatic animais, cottontail rabbits (Sylvilagus aiidubonii), Richardson’s ground squirrels (Urocîtelhis richardsonii) and deer mice (Peromyscus manicidatus). For each experiment, up to forty test subjects were each offered one bowl of untreated oats for three days. Test subjects were ranked based upon average pre-test consumption and assigned to one of four test groups at the conclusion of the pre-test (n = 10 test subjects per group). Test treatments were then randomly assigned among test groups. During the one-day test, one bowl of attractant-treated oats was offered to each test subject. Test subjects in Groups l-4 receîved oats topically-treated with an attractant (e.g. apple, molasses or peanut flavoring) and 0, 0.7, 0.14 or 0.2% of an UV feeding eue (e.g. titanium dioxide). Daily oat consumption was measured on the day subséquent to the test.

Relative to pre-test consumption of untreated oats, rabbits, ground squirrels and mice exhibited 40-85% more consumption of test treatments including 0-0.2% of the UV feeding eue. A synergistic attraction was observed for food treated an attractant and an UV feeding eue in dichromatic animais.

Exaniple 7

The below, 9,10 Anthraquinone formulation, which is effective for dichromatic animais when applied to surfaces at the rates set forth in this application, is suitable for application to any solid or plant surface:

AQ <0.5%or>l0%

Visual Cue 0.1-50%

Water 25-35%

Polyethylene Glycol 2-3%

Surfactants 1-3%

Thickeners (1-3%)

Exaniple 8

Table 1 illustrâtes decreased behavioral response (prophétie) to a repellent formulation including a wavelength-specific repellent agent plus a wavelength-specific visual cue agent in dichromatic animais, the cottontaîl rabbit (Sylvilagus spp., CORA), deer mouse (Peromyscus spp., DEMI), house mouse (Mus spp., ΗΟΜΓ) and Richardson’s ground squirrel (Urocitelhts richardsonii, RGS).

Table 1: Decreased behavioral response to a repellent formulation including a wavelength-specifïc repellent agent plus a wavelength-specifïc visual eue agent in dichromatic animais

Repellent Conc. (wt/wt)	Seed Treatment Repellency (%)	Surface Treatment Repellency (%)
	CORA	DEMI	HOMI	RGS	CORA	DEMI	HOMI	RGS
0.5%	80	50	50	60	80	50	50	60
1.0%	90	75	75	75	90	75	75	75
2.0%	100	90	90	90	100	90	90	90

Example 9

Table 2 illustrâtes increased behavioral response (prophétie) to an attractant formulation including a wavelength-specifïc attractant agent plus a wavelength-specifïc visual eue agent in dichromatic animais, the cottontail rabbit (Sylvdogus spp.), deer mouse (Peromyscusspp.), house mouse (Mus spp.) and Richardson’s ground squirrel (Urocitellus richardsonii).

Table 2: Increased behavioral response to an attractant formulation including a wavelength-specifïc repellent agent plus a wavelength-specifïc visual eue agent in dichromatic animais

Attractant Conc. (wt/wt)	Seed Treatment Attraction (%)	Surface Treatment Attraction (%)
	CORA	DEMI	HOMI	RGS	CORA	DEMI	HOMI	RGS
0.5%	80	50	50	60	80	50	50	60
1.0%	90	75	75	75	90	75	75	75
2.0%	100	90	90	90	100	90	90	90

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Claims (11)

1. Claims

   We Claim;

   1. A method for changing the behavioral response of a dichromatic animal associated with a target comprising:

   providing a composition comprising a wavelength-specific visual eue agent and an agent wherein the wavelength-specific visual eue agent has spectral characteristics sufficiently similar to the spectral characteristics of the agent and wherein the spectral characteristics of the agent fall outside of the ranges within which said dichromatîc animal is maximally sensitive;

   applying said composition to said target, presenting said target to said dichromatic animal, whereby said dichromatic animal's behavioral response associated with said target is changed at a level of at least 5% greater than when said dichromatic animal is presented with a target upon which is applied a composition comprising only one of said wavelength-specific visual eue agent or said agent.
2. 2. The method of claim l, wherein the change is a decrease in the behavioral response, wherein the composition is a repellent composition, wherein the agent is a repellent agent.
3. 3. A method for decreasing the behavioral response of a dichromatic animal associated with a target via a repellent application selected from the group consisting of:

   a. an initial application of an effective amount of a repellent agent to said target, and one or more subséquent applications to said target of an effective amount of a wavelengthspecific visual eue agent în combination with the same amount or a reduced amount of the repellent agent; or

   b. an initial application of an effective amount of a repellent agent to said target, and one or more subséquent applications to said target of effective amounts of a wavelength-specific visual eue agent; or

   c. one or more concurrent applications of an effective amount of a repellent agent and an effective amount of a wavelength-specific visual eue agent.
4. 4. The method of claim l wherein said dichromatic animais are those animais that use only two distinct types of photoreceptors for color vision.
5. 5. The method of claim 3 wherein said dichromatic animais are those animais that use only two distinct types of photoreceptors for color vision.
6. 6. The method of claim l wherein said targets comprise structures, agricultural fields or crops, seeds, seedlings, orchards, vineyards, livestock feed, fertilizers, pesticides, animal or insect baits, or combinations thereof.
7. 7. The method of claim 3 wherein said targets comprise structures, agricultural fields or crops, seeds, seedlings, orchards, vineyards, livestock feed, fertilizers, pesticides, animal or insect baits, or combinations thereof.
8. 8. The method of claim 6 wherein said crops comprise corn, fruit, grains, grasses, legumes, lettuce, millet, oats, rice, row crops, sorghum, sunflower, tree nuts, turf, vegetables, or wheat.
9. 9. The method of claim 2 wherein said repellent agent is selected from the group consisting of anthraquinones, flutolanil, anthranilates, methiocarb, caffeine, chlorpyrifos, cyhalothrin, methyl phenyl acetate, ethyl phenyl acetate, o-amino acerophenone, 2-amino-4,5-dimethyl ecetophenone, veratroyl amine, cinnamic aldéhyde, cînnamic acid, cinnamide, and combinations thereof.
10. 10. The method of claim l wherein said visual eue agent is selected from the group consisting of UV-absorbent materials, IR-absorbent materials, UV-reflective materials, IR-reflective materials, UV-refracting materials, IR-refracting materials, human-visible materials, infrared materials, and combinations thereof.
11. 11. The method of claim 3 wherein said visual eue agent is selected from the group consisting of UV-absorbent materials, IR-absorbent materials, UV-reflective materials, IR-reflective materials, UV-refracting materials, IR-refracting materials, human-visible materials, infrared materials, and combinations thereof.