WO2021089967A1 - Preparation combinee et procede pour la lutte contre les fourmis champignonnistes - Google Patents
Preparation combinee et procede pour la lutte contre les fourmis champignonnistes Download PDFInfo
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- WO2021089967A1 WO2021089967A1 PCT/FR2020/052033 FR2020052033W WO2021089967A1 WO 2021089967 A1 WO2021089967 A1 WO 2021089967A1 FR 2020052033 W FR2020052033 W FR 2020052033W WO 2021089967 A1 WO2021089967 A1 WO 2021089967A1
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- ants
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- insecticide
- combined
- laccase
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having no bond to a nitrogen atom
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/04—Sulfonic acids; Derivatives thereof
- A01N41/06—Sulfonic acid amides
Definitions
- the invention relates to the field of pest control. It offers a new combined preparation against mushroom ants as well as a new control process capable of destroying colonies of mushroom ants.
- the present invention also provides a method of making such a combined preparation.
- Mushroom ants or "leaf cutter ants” or “cassava ants” belong to the family Formicidae, subfamily Myrmicinae, Attini tribes, comprising several genera such as Atta or Acromyrmex. Mushroom ants are found in the tropics and subtropics such as Central and South America.
- the fungus supplied with raw material by the ants, constitutes a source of nutrients for the brood, the queen, and the workers (Qinlan et al., 1978, Fisher et al., 1994) and the fungus is a source of enzymes ensuring degradation of plant material.
- the ants provide protection by secreting antibiotics and the fungus, during its growth, helps maintain the architecture of the nest (Ronald Zanetti et al., 2014).
- Mushroom ants represent a pest for agricultural and forestry crops. Indeed, they are found without a predator when they invade monocultures developed by humans (a phenomenon accentuated with deforestation), which results in a strong unregulated presence. Polyphagous, they collect leaves, flowers, fruits and seeds and thus ravage most agricultural crops, in particular food crops, vegetables and ornamental plants. [0006] The damage caused by mushroom ants represents an increase in the costs of crop management. For example, damage to Eucalyptus plantations has been estimated at over 14.5%, with defoliation in Pine and Eucalyptus crops decreasing the increase in plant size and diameter (Resi Filho et al. , 2001, Cantarelli et al. 2008).
- organochlorine insecticides such as aldrin or dechlorane were widely used in agriculture, until their use was suspended by the US-EPA in 1974.
- these conventional insecticidal compounds are generally difficult to biodegrade and cause persistent toxic activity in soils and waters and a danger to human health.
- Organophosphate and organohalogen insecticides and pyrethroids have also been used.
- these insecticides resulting from chemical syntheses have a harmful impact on humans and the environment.
- they present difficulty in use and low efficacy with low mortality rates (Isenring and Neumeister, 2010).
- laccase This enzyme breaks down lignin and acts on certain polyphenols.
- the laccases oxidize the phenolic derivatives making it possible to form monolignols from lignin.
- laccase was the enzyme mainly expressed in the enzymatic profiles produced from lysates extracted from grindstones and ants.
- formicidal compositions comprising a laccase inhibitor (WO2017 / 121881) have been developed.
- compositions comprising a laccase inhibitor have also been coupled with an antibacterial in order to optimize the disappearance of the colony.
- antibacterials is less and less recommended following the development of certain resistant strains.
- Boulogne et al. (2012) list insecticidal and antifungal compounds produced by plants as an alternative to synthetic pesticides in the control of fungal ants.
- Compositions based on peppermint oil are mentioned in international application W001 / 00034 as pesticide compositions for household use.
- International application WO2009 / 117623 mentions pesticide and antiparasitic compositions based on essential oils.
- the present invention proposes a new combined preparation against mushroom ants as well as a new control process capable of rapidly stopping the activity of harvesting ants, of limiting the phenomena of learning and displacement of nests by destroying quickly the colonies of fungal ants in particular by a rapid action on the grindstone and the ants, while reducing the quantities of synthetic insecticide necessary until now.
- the invention relates to a combined formicidal preparation comprising, formulated separately or in a single composition, at least one insecticide and at least one laccase inhibitor, said laccase inhibitor being present in the preparation at a level greater than or equal to 0.5% by weight of the preparation and the mass ratio between the at least one laccase inhibitor and the at least one insecticide being greater than or equal to 2.
- Such a combined preparation makes it possible to maintain a high level of efficiency in controlling ant harvesting activities while reducing the amounts of insecticide required. It also allows the destruction of the fungus millstones leading to a lasting destruction of the nest.
- the combined preparation according to the invention is inexpensive and reduces the negative impacts on the environment and on human and animal health due to the small amounts of insecticide used.
- the laccase inhibitor inhibits the laccase activity present in the grindstone and in ants.
- the content of laccase inhibitor helps control ants, and also affects the grindstone.
- the content used in laccase inhibitor is easily degradable and environmentally friendly.
- the use, in addition to the laccase inhibitor, of at least one insecticide with activity against ants allows the harvesting activity of ants to be quickly stopped.
- the invention further relates to a combined formicidal preparation
- a combined formicidal preparation comprising, formulated separately or in a single composition, at least one insecticide belonging to the family of phenylpyrazoles, neonicotinoids or to the family of sulfonamides and at least one laccase inhibitor selected from: an antioxidant molecule, a chelator, a detergent, a non-oxidizing organic acid and a cationic metal, said laccase inhibitor being present in the preparation at a content greater than or equal to 0.5% by weight of the preparation, and the mass ratio between the at least one laccase inhibitor and the at least one insecticide being greater than or equal to 2.
- At least one insecticide is selected from: fipronil, sulfluramide or their mixture.
- Fipronil and sulfluramide make it possible to quickly stop the activity of harvesting ants by a quick and efficient action on the harvesters.
- sulfluramide is inexpensive, has high efficacy, and is of low toxicity or danger to humans.
- the mass ratio between the at least one laccase inhibitor and the at least one insecticide is greater than 5, preferably greater than or equal to 10.
- Such a mass ratio between the at least one laccase inhibitor and the at least an insecticide makes it possible to couple their effects and to obtain a rapid elimination of the ants, a destruction of the colony as a whole as well as an absence of reappearance of the colonies.
- the insecticide content in the preparation is less than or equal to 0.3% by weight, of the preparation preferably less than or equal to 0.1%.
- concentrations for example, sulfluramide shows lower toxicity to humans and the environment.
- At least one laccase inhibitor is selected from: an antioxidant molecule, a chelator, a detergent, a non-oxidizing organic acid and a cationic metal. These molecules inhibit the activity of laccase and therefore contribute, among other things, to the destruction of the fungus millstone.
- At least one laccase inhibitor is selected from: glutathione, L-cysteine, sodium thiosulfate, ascorbic acid, eugenol and their mixtures. These molecules are rapidly biodegradable and exhibit strong anti-laccase activity.
- at least one laccase inhibitor is selected from: L-cysteine, ascorbic acid and mixtures thereof. More preferably the at least one laccase inhibitor is ascorbic acid.
- At least one laccase inhibitor is ascorbic acid or L-cysteine
- at least one insecticide is fipronil, sulfluramide or a mixture thereof.
- the content of laccase inhibitor in the preparation is greater than or equal to 1% by weight of the preparation, preferably it is between 1 and 10%, limits included. In addition, the content of laccase inhibitor in the preparation is typically less than or equal to 10% by weight of the preparation. Such a content of laccase inhibitor allows, in combination with an insecticide, affects both the grindstone and the different social categories of ants.
- the at least one laccase inhibitor is selected from L-cysteine and ascorbic acid, and the at least one insecticide is fipronil and / or sulfluramide.
- the at least one laccase inhibitor is ascorbic acid, and the at least one insecticide is sulfluramide.
- the preparation further includes an appetizing.
- the use of an appetizer makes it possible to increase the number of ants ingesting the combined preparation and / or to increase the spread of the combined preparation to the whole colony and therefore to increase the exposure of ants and a mushroom wheel at the combined drug.
- the appetite is selected from: an oligosaccharide appetite, a polysaccharide appetite and mixtures thereof.
- At least one laccase inhibitor and at least one insecticide are part of a single composition
- the invention further relates to a method of controlling fungal ants, comprising the use of a combined preparation according to the invention.
- a method of controlling fungal ants comprising the use of a combined preparation according to the invention.
- Such a process makes it possible to protect crops by destroying the nests and preventing their development in or around the fields and crops to be protected.
- such a method is particularly suited to the control of mushroom ants, because it targets both colony members and the grindstone, it is inexpensive and environmentally friendly.
- the invention also relates to a method of manufacturing a combined preparation according to the invention comprising the following steps:
- Such a manufacturing process is simple to perform, inexpensive and makes it possible to protect crops by preventing the development of nests in or around the fields to be protected and to destroy the colonies of mushroom ants.
- Figure 1 diagram of a sub-colony such as those used for the calibrated tests of the preparations of the invention.
- the garden part (A) is connected via a tunnel (C) to the mushroom part (B) where the mushroom (1) is housed under a bell (D) as well as a drinking trough (E), the ants (2) passing from the garden to the mushroom house via the tunnel.
- Prep. 1 preparation containing 1% cysteine (laccase inhibitor); Prep.
- Figure 3 cumulative mortality of ants over time.
- Prep. 4 preparation containing 0.3% sulfluramide
- Prep. 5 preparation containing 0.1% sulfluramide
- Prep 7 preparation containing 1% ascorbic acid (laccase inhibitor)
- Prep 8 preparation containing 1% ascorbic acid (laccase inhibitor) combined with 0.1% sulfluramide.
- the dotted gray horizontal line marks the 50% mortality level.
- muscle ants is understood to mean ants belonging to the Attini tribe and in particular to the Atta or Acromyrmex genera.
- the most widely represented species Acromyrmex ambiguus, Acromyrmex aspersus, Acromyrmex balzani, Acromyrmex biscutatus, Acromyrmex coronatus, Acromyrmex crassispinus, Acromyrmex diasi, Acromyrmex disciger, Acromyrmex evenkul, Acromyrmexyerxyerxyxyricrixis, Acromyrmexyerxyxyxyricrixis, Acromyrmexyerxyxyxidicicornis, Acromyrmexyerxyxidicex, hepsidrix Acromyrmex lobicornis, Acromyrmex mondayi, Acromyrmex niger, Acromyrmex mondayi, Acro
- the expression “fight against mushroom ants” corresponds here to an action leading to the abandonment of the nest and / or to the destruction of the colony.
- colony should be understood here to mean a group of ants, other than a single pair and comprising at least one queen, building nests in order to raise offspring in a cooperative manner.
- grindingstone also called “mushroom garden” (ie fungus garden) in the literature, it is necessary to understand here the fungal structure cultivated by the mushroom ants and composed mainly of the saprophytic basidiomycete fungus of the species Leucophorusgongylophorus growing on ⁇ vegetable matter reclaimed by es tournis.
- “Grinding wheel”, “mushroom wheel” or “mushroom” are used interchangeably here.
- combined formicidal preparation a preparation formulated so as to target the fungal ants and the fungus grindstone and whose surprising potentiation effects resulting from the combination between the insecticide and the laccase inhibitor allow in particular a reduction in the doses of insecticides introduced into the environment.
- the combined formicidal preparation according to the invention has little or no impact on bees or other invertebrates.
- the combined formicidal preparation can comprise these active ingredients formulated separately or in a single composition.
- laccase should be understood to mean enzymes of the polyphenol oxidase type. They make it possible to degrade lignin and provide protection against the toxicity of certain polyphenols. In the nomenclature relating to enzymes, laccases are grouped under the code EC 1 .10.3.2. The laccases found in or on the fungi of mushroom ants and in or on the mushroom ants are particularly targeted.
- laccase inhibitor or "compound exhibiting laccase inhibitory activity” should be understood to mean a compound which inhibits the activity of laccases as measured for example by the substrate ABTS (2,2'-azino-bis ( 3-ethylbenz-thiazoline-6-sulfonic acid) according to the method published by Bourbonnais et al. (1990).
- antioxidant molecule should be understood to mean the common meaning given to this term, namely a molecule capable of reducing or preventing the oxidation of other chemical substances.
- the antioxidant potential of a molecule can be verified, for example, by using ABTS radicals (Bourbonnais et al., 1990).
- the term "appetizing” or “bait” should be understood to mean a compound having an attracting power on mushroom ants and thus increasing the amount of preparation according to the invention harvested by said ants.
- carbohydrate appetite it is necessary to understand a molecule belonging to the group of carbohydrates.
- oligosaccharide or polysaccharide appetizing it is necessary to understand a molecule of oligosaccharide or polysaccharide type such as for example fructans, glucans, galactans, mannans or hemicelluloses.
- Cultures protected from infestation and degradation by colonies of fungal ants by the use of the combined preparation according to the invention are preferably all plant cultures of socio-economic interest for the activity human.
- it can be any agricultural crop (forestry, cereals, fruit growing, floriculture, fodder crops) or pleasure such as gardens.
- the invention relates to a combined preparation comprising at least one insecticide and at least one laccase inhibitor, said laccase inhibitor being present in the preparation at a content greater than or equal to 0.5% in weight of the preparation.
- laccase inhibitors There is a wide variety of laccase inhibitors.
- laccase inhibitor any molecule which, in the context of the combined preparation mentioned above, causes a decrease in the activity of laccase by more than 50%, preferably more 75%, more preferably more than 90%.
- these inhibitions of the laccase activity are obtained at contents of laccase inhibitor of less than 10% by weight of the preparation. Even more preferably, these inhibitions of the laccase activity are obtained at contents less than or equal to 5% by weight of the preparation.
- antioxidant molecules have the capacity to inhibit the activity of a laccase. Nevertheless, there are laccase inhibitors which do not exhibit antioxidant activity. Among the molecules exhibiting anti-laccase activity and not being antioxidant molecules, it is possible to cite chelators, detergents, non-oxidizing organic acids and cationic metals.
- the following molecules are also molecules exhibiting anti-laccase activity without being antioxidant molecules: ethylenediaminetetraacetic acid (EDTA), calcium chloride (CaC), rhodotorulic acid, enterobactin, thioglycolic acid, diethyldithiocarbamic acid, azide of sodium, cetyltrimethylammonium bromide, Fe 2+ , Cu 2+ , Ag + , Li + , Sn + , Hg + , Mn 2+ , Zn 2+ , Al 3+ , sodium lauryl sulfate, sodium cyanide (NaCN), thiosulphate sodium, oxalic acid and beta-mercaptoethanol.
- at least one laccase inhibitor is selected from: an antioxidant molecule, a chelator, a detergent, a non-oxidizing organic acid and a cationic metal.
- laccase inhibitor The molecules preferred for their use as a laccase inhibitor are:
- - for detergents sodium lauryl sulphate
- - for cationic metals Fe 2+ , Cu 2+ , Ag + , Li + , Sn + , Hg + , Mn 2+ , Zn 2+ , Al 3+ ,
- oxalic acid thioglycolic acid
- diethyldithiocarbamic acid diethyldithiocarbamic acid
- the laccase inhibitor is an antioxidant molecule.
- antioxidant molecules are generally known to those skilled in the art (Lu et al., 2010). He will also be able to verify this activity via standard tests for measuring the antioxidant potential such as that described in Bourbonnais et al. (1990).
- the molecules exhibiting an anti-laccase activity and an anti-oxidant activity can for example be selected from: ascorbic acid (E300), citric acid (E330), coumaric acid, ferulic acid, gallic acid, palmityl acid 6-1 - ascorbic (E304), syringic acid, sodium / calcium / potassium (E301) / (E302) / (E303) ascorbates, butylhydroxyanisole (BHA), butylhydroxytoluol, cysteine, octyl (E31 1) or dodecyl (E312) gallates ), glutathione, sodium / potassium / calcium lactates (E325) / (E326) / (E327), lecithins (E322), lipoate, carotenoids (E160) like lutein, luteolin, carotenes like lycopene, sodium tartrates (E335) / potassium (E336) or sodium and potassium (E337), eugen
- the laccase inhibitor is selected from one of the following compounds: ascorbic acid, citric acid (E330), coumaric acid, palmityl 6- 1 -ascorbic acid (E304), sodium / calcium / potassium ascorbates (E301 ) / (E302) / (E303), L- cysteine, octyl (E311) or dodecyl (E312) gallates, glutathione, sodium (E325), potassium (E326) or calcium (E327) lactates, lecithins (E322), carotenoids (E160) such as lutein, luteolin, carotenes such as lycopene, sodium (E335) / potassium (E336) or sodium and potassium (E337) tartrates, eugenol, sodium thiosulphate, vitamin E (natural tocopherols (E306)), synthetic a-tocopherol (E307), synthetic g-tocopherol (E308) and synthetic d-
- the laccase inhibitor preferably has little impact on the environment and is rapidly degraded there.
- the laccase inhibitor is selected from one of the following compounds: ascorbic acid, sodium / calcium ascorbates (E301) / (E302), sodium / potassium / calcium lactates (E325) / (E326 / (E327), lutein, lycopene, sodium (E335) / potassium (E336) or sodium and potassium (E337) tartrates, sodium thiosulfate, vitamin E (natural tocopherols (E306)), synthetic a-tocopherol (E307 ), synthetic g-tocopherol (E308) and synthetic d-tocopherol (E309), L-cysteine and glutathione.
- the laccase inhibitor is selected from one of the following compounds: L-cysteine, coumaric acid , glutathione, eugenol, sodium thiosulfate, ferulic acid, syringic acid, ascorbic acid, gallic acid.
- the laccase inhibitor is selected from one of the following compounds: L-cysteine, glutathione, eugenol, sodium thiosulfate, ferulic acid, syringic acid, ascorbic acid and gallic acid.
- the laccase inhibitor is selected from L-cysteine, ascorbic acid, sodium thiosulphate, glutathione, eugenol and their mixtures.
- the laccase inhibitor is selected from L-cysteine and ascorbic acid or their mixtures.
- This laccase inhibitor is used at a sufficient concentration to cause an inhibition of the activity of the laccases present in the grindstone and in ants.
- the laccase inhibitor is present in the preparation at a content greater than or equal to 0.25% by weight of the preparation.
- the laccase inhibitor is present in a content greater than or equal to 0.5% and even more preferably in a content greater than or equal to 1%.
- the content of laccase inhibitor in the preparation is less than 10% by weight of the preparation.
- the content of laccase inhibitor in the preparation is comprised, limits included, between 0.25 and 15% by weight of the preparation, more preferably between 0.5 and 10% by weight of the preparation, limits included , and even more preferably between 1 and 5% by weight of the preparation, limits included.
- This laccase inhibitor allows an inhibition of the laccase activity present in the grindstone and in ants.
- the content used in laccase inhibitor is easily degradable and environmentally friendly.
- the use of at least one laccase inhibitor has an activity on the grinding wheel.
- this action is not immediate and does not quickly stop the harvesting activity of the ants, which can also displace the nest. It is therefore necessary to be able to target the ants in the colony as well.
- the invention relates to a combined preparation comprising at least one insecticide and at least one laccase inhibitor, said laccase inhibitor being present in the preparation at a higher content or equal to 0.5% by weight of the preparation.
- the use, in addition to the laccase inhibitor, of at least one insecticide having an activity against ants makes it possible to destroy the colonies around the location of the combined preparation by reducing the risk of reappearance. colonies.
- the combination of at least one insecticide and at least one laccase inhibitor has an earlier and much greater inhibitory effect on the growth of the fungus than the inhibitor of laccase used alone. This is all the more surprising since no effect is observed on the fungus when the insecticide is used as the only active agent, at the same concentrations as those used in the combined preparation of the invention.
- the fungus is essential for the colony because it provides food for adult ants and larvae by degrading the plants harvested by the ants.
- the grindstone is the site of the larvae which are covered with mycelium by the workers, for protection and / or food supply. It is known that the grindstone secretes numerous enzymes of fungal origins which can reduce the effectiveness of insecticides on the one hand and act on adult ants on the other hand. It is also known from the prior art that the larvae play an essential role in the colony: a colony lacking in larvae quickly decays following the disorganization of the workers (lopes et al 2005). Thus, brought by the ants in the mushroom wheel, the combined preparations of the invention will cause the rapid withering away of the fungus, a source of food for the worker ants and the larvae which results in the death of ants and larvae. This implies a non-renewal of populations and therefore reduces the risk of resurgence of nests.
- the combination of at least one insecticide and at least one laccase inhibitor has a faster formicidal effect on colony ants than the insecticide used alone, yet at lower rates. higher concentrations.
- a surprising potentiation of the effect of the insecticide is therefore observed within the combined preparations, resulting in an identical overall mortality despite a decrease in the amounts of insecticide and also a reduction in the action time of the insecticide.
- the mass ratio between the at least one laccase inhibitor and the at least one insecticide in the combined preparation according to the invention is greater than or equal to 2, preferably greater than or equal to 5, so more preferably greater than or equal to 10, particularly preferably greater than or equal to 30 and even more preferably greater than or equal to 50.
- the mass ratio between the at least one laccase inhibitor and the at least one insecticide in the combined preparation according to the invention is comprised, limits comprised between 2 and 10,000, between 5 and 5,000, preferably between 10 and 15,000, preferably between 30 and 500, more preferably 50 and 300.
- Such a mass ratio between at least one insecticide and at least one laccase inhibitor makes it possible to obtain the unexpected effects on the grindstone and the mortality of ants described above. It eliminates the ants and destroys the grindstone which prevents the reappearance of colonies, unlike conventional insecticide treatments, for which a displacement of the nests can be observed.
- insecticides such as those belonging to the families of phenylpyrazoles, neonicotinoids or even sulfonamides.
- the combined preparation according to the invention is characterized in that at least one insecticide belongs to the family of phenylpyrazoles, neonicotinoids or to the family of sulfonamides.
- the combined preparation according to the invention is characterized in that at least one insecticide is selected from fipronil, sulfluramide or their mixture.
- C12H4CI2F 6 N4OS trifluoromethylsulfinyl pyrazole-3-carbonitrile
- C12H4CI2F 6 N4OS trifluoromethylsulfinyl pyrazole-3-carbonitrile
- GABA gamma aminobutyric acid
- Fipronil has a direct mode of action by simple contact or ingestion and an indirect effect by horizontal transfer of toxicity by necrophoresis, grooming and trophallaxis.
- Sulfluramide or N-Ethylperfluorooctylsulfonamide is an insecticide which when present in the body is metabolized to form a compound perfluorooctane sulfonamide (DESFA) which is involved in the process of oxidative phosphorylation (aerobic respiration ), disrupting the production of ATP in the mitochondria as opposed to dechlorane which acts on the nervous system.
- DESFA perfluorooctane sulfonamide
- DESFA perfluorooctane sulfonamide
- Poisoning by sulfluramide leads among other things to a sharp decrease in the energy of the ants organism until the interruption of the metabolism resulting in the death of the ants.
- these insecticide treatments have the disadvantage of causing a warning phenomenon in the ants which then move the colony and the nest.
- the combined preparation according to the invention allows a rapid effect on the ants and the colony and the accelerated decay of the grindstone, thus preventing the displacement of the colony.
- sulfluramide is inexpensive, has high efficacy and is of low toxicity or danger to humans, especially since, still in the combined preparation according to the invention, the doses used may be lower than the doses used. usual indicated doses for these insecticides used alone.
- a mixture of fipronil and sulfluramide can be used as an insecticide within the meaning of the invention. This makes it possible to couple both the effects of fipronil with the effects of sulfluramide.
- the combined preparations according to the invention comprise significantly smaller amounts of insecticide compared to conventional insecticide treatments, while having a faster lethal effect and without reducing the overall mortality, which is particularly advantageous from the point of view of the environment and toxicity to humans.
- insecticide content can be divided by a factor greater than or equal to 1, preferably by a factor greater than or equal to 2 and even more preferably by a factor greater than or equal to 3, relative to the prescribed treatment. for the insecticide used alone.
- the content in the insecticide preparation is less than or equal to 0.3% by weight, preferably less than or equal to 0.15% by weight, more preferably less than or equal to 0.1% by weight of the preparation.
- the insecticide is used in a formicidal preparation at a concentration of between 0.001% and 0.3% by weight of the preparation, limits included. Preferably, it is between 0.01 and 0.1% by weight, limits included and more preferably between 0.02 and 0.075% by weight of preparation, limits included.
- sulfluramide exhibits low toxicity to humans and the environment.
- the total insecticide content can be further reduced. It is less than or equal to 0.1%, preferably less than or equal to 0.075% by weight of the preparation, which makes it possible to maintain a high efficiency for the destruction of ants while further reducing the toxicity for humans and animals. environment.
- this concentration may be even lower.
- fipronil it can be less than or equal to 0.1% by weight, preferably less than or equal to 0.01% by weight of the preparation, even more preferably, less than or equal to 0.003% by weight of the preparation, particularly preferably, less than or equal to 0.001% by weight of the preparation.
- the different contents, concentrations and the different mass ratios can be determined by a person skilled in the art using conventional tests for evaluating the concentration.
- At least one laccase inhibitor is L-cysteine and the at least one insecticide is fipronil, sulfluramide or a mixture thereof.
- L-cysteine is a potent inhibitor of phenol oxidases and, its combined use with fipronil or sulfluramide, leads to accelerated decay of the wheel, and to increase the effectiveness of fipronil or sulfluramide in terms of toxicity. for the ants of the colony, which results in the death of the colony, without displacement of nests or reappearances of new colonies or nests.
- the at least one laccase inhibitor is ascorbic acid and the at least one insecticide is fipronil, sulfluramide or a mixture thereof.
- ascorbic acid is also a potent inhibitor of phenol oxidase its use combined with fipronil and / or sulfluramide in terms of toxicity to the ants of the colony, which results in the death of the colony, without displacement of the colony. nest or reappearance of new colonies or nests.
- the combined preparation further comprises an appetizer. This is because the use of an appetizer makes it possible to attract mushroom ants more effectively, as opposed to the absence of the appetite.
- an appetizing allows to increase the number of ants ingesting the combined preparation or to increase the importation of the combined preparation inside the colony, in particular on the fungus, and therefore to increase the exposure of ants and the grindstone to the combined preparation.
- the combined preparation according to the invention is characterized in that the appetite is selected from an appetizing oligosaccharide, an appetizing polysaccharide, and mixtures thereof.
- the appetizing oligosaccharide or polysaccharide can be chosen from
- starch starch, amylose, amylopectin, cellobiose, glycogen, glucose, sucrose, laminarin ((1-3) - beta-D-glucan), maltodextrin, polymers of cyclodextrin, polymers of isomaltose, icodextrins, dextran, maltoheptose, maltohexose, maltopentose , maltotetrose, maltotriose, maltobiose, cellulose, hemicellulose, holocellulose, lignocellulose, cellulose ethers, esters of cellulose, alkyl cellulose, hydroxy cellulose, levoglucosan, pectin, pectocellulose, microcrystalline cellulose, powdered cellulose, paper, wood fiber, their derivatives and their mixtures.
- the oligosaccharide or polysaccharide appetite is chosen from: starch, amylose, cellobiose, laminarin, maltodextrin, maltobiose, glucose, sucrose, glycogen, cellulose, hemicellulose, holocellulose, lignocellulose, cellulose ethers, cellulose esters , alkyl cellulose, hydroxy cellulose, levoglucosan, pectin, pectocellulose, their derivatives and their mixtures.
- the oligosaccharide or polysaccharide appetite is chosen from: starch, amylose, laminarin, maltodextrin, glycogen, cellulose, hemicellulose, holocellulose, lignocellulose, cellulose ethers, cellulose esters, alkyl cellulose, hydroxy cellulose, levoglucosan, pectin, pectocellulose, their derivatives and their mixtures.
- the appetite is starch or cellulose.
- the oligosaccharide or polysaccharide appetite can be a flour or a cereal porridge or a mixture of flours or grits of different cereals, such as, for example, wheat or corn flour, gruel of wheat, oats or corn.
- the appetizing oligosaccharide or polysaccharide can be a fruit puree or a mixture of fruit puree or a composition based on fruit pulp or a mixture of fruit pulps, such as citrus fruits or the banana.
- the oligosaccharide or polysaccharide appetite is a flour mixture or a cereal porridge or a mixture of flours or grits of different cereals such as, for example, those mentioned above, and of fruit puree or of a mixture of fruit puree or of a composition based on fruit pulp or a mixture of fruit pulp or fruit pulp derivatives (eg dehydrated pulp).
- the concentration of appetite depends in particular on the presence and amount of laccase inhibitor and / or insecticide.
- the amount of appetizing is between 600 g / kg and 999 g / kg; preferably between 800 g / kg and 999 g / kg, preferably between 850 g / kg and 990 g / kg, or even between 870 g / kg and 950 g / kg of the formicidal preparation.
- the combination of the at least one laccase inhibitor and of the at least one insecticide in the combined preparations of the invention has no repellent effect on ants, in particular when it is used in combination with an appetizing oligosaccharide or polysaccharide as described above, as demonstrated in the experimental part.
- the at least one laccase inhibitor and the at least one insecticide of the combined formicidal preparation according to the invention are suitable for being used simultaneously, jointly or separately, in one or more dispersions.
- the preparation according to the invention can be dispersed all at once on or around the nest or near the collection columns.
- the preparation according to the invention is dispersed regularly, in several times, over a period of time or at defined intervals, on or around the nest or near the collection columns.
- the dispersions can take place every 5 to 10 days.
- the dispersions can be daily, or spaced 2, 3, 4, 5, or 6 days, or one, two or three weeks.
- the preparation according to the invention can be dispersed directly on or around the nest when the latter is located (for example less than 5 meters) or preferably near the harvest columns (for example less than 2 meters).
- At least one laccase inhibitor and at least one insecticide are formulated separately, as active compounds of the combined preparation against fungal ants.
- a formulation comprising the laccase inhibitor will be combined with a formulation comprising the insecticide, in doses and ratios as described above.
- these two compounds are the only compounds active against fungal ants of said combined preparation. That is, they are the only ones to act negatively directly on the members of the colony and / or the fungus.
- This variant has the advantage of being able to adapt the amounts of each of the active agents in the preparation independently of each other.
- At least one laccase inhibitor and at least one insecticide form part of a single composition as compounds active against fungal ants.
- these two compounds are the only compounds active against fungal ants. That is, they are the only ones to act negatively directly on the members of the colony and / or the fungus.
- the combined preparation according to the invention can take different forms.
- the combined preparation takes a form selected from: one or more granules or one or more powders.
- the combined preparation according to the invention may comprise granules comprising the laccase inhibitor, granules comprising the laccase inhibitor and the insecticidal compound, or granules comprising the laccase inhibitor combined with granules. comprising the insecticidal compound or granules comprising the insecticidal compound.
- the combined preparation may comprise one or more powders such as a powder comprising the laccase inhibitor, a powder comprising the laccase inhibitor and the insecticidal compound, or else a powder comprising the laccase inhibitor combined with a powder comprising the insecticidal compound or a powder comprising the insecticidal compound.
- the combined preparation according to the invention can comprise granules comprising one of the active agents and a powder comprising another of its active agents.
- these types of forms are suitable for a direct mode of action by simple contact or ingestion and for an indirect mode of action by horizontal transfer of toxicity.
- the granules or powders can be spread by a manual pump or even by an automatic dispensing device capable of spreading a defined quantity. Spreading is therefore particularly simple and easy and can also be carried out in a localized and targeted manner (in comparison for example with spraying), particularly for granules.
- the granules can be placed in a container in which is provided one or more passages for the ants, allowing them to take the granules and import them within the colony.
- This type of treatment has the advantage of protecting the treatment from climatic conditions such as rain or wind, and therefore makes it possible to renew the treatment less often. These forms do not require specific equipment, on the contrary, they are practical and economic.
- the use of the preparations of the invention in the form of granules limits the risks of contamination of the operator by the insecticides contained in the preparations as well as the risks of uncontrolled dissemination in nature by the wind, for example.
- the invention relates to a method of controlling fungal ants comprising the use of a combined preparation according to the invention.
- a process makes it possible to protect crops by preventing the development of nests on the outskirts of fields and crops to be protected.
- such a process is particularly suitable for fungus ants because of its effects explained above, and is also inexpensive and more environmentally friendly than conventional solutions based on treatments based solely on chemical insecticides. , by nature, the quantity of its components, and its form.
- the process according to the invention comprises the use of a combined preparation according to the invention at concentrations and / or mass ratios making it possible to obtain in particular, in addition to its many advantages inherent in the particularly suitable combination of effects in the fight against fungus ants, the synergistic effect observed by the inventors on the growth of the grindstone fungus and the potentiating effect of the toxicity of the insecticide on the ants of the colony and of its speed of action .
- the preparation can be dispensed indirectly on or around the nest or preferably near the harvest columns.
- the amount of preparation dispensed is between 1 g and 200 g per square meter, preferably between 2 g and 100 g per square meter and even more preferably 4 g and 50 g per square meter, particularly more preferably 8 and 45g per square meter, terminals included.
- the quantity dispensed can vary depending on the floor area of the nest or more simply on the area that is to be treated. Those skilled in the art know how to determine the area to be treated.
- the laccase inhibitor and the insecticide are dispensed separately in the control method of the invention, this makes it possible to vary the respective concentrations of the active compounds, in particular according to the place where the preparation of the laccase The invention is filed and of a particular target, that is to say, on or near the nest, near the harvest columns, on or near the plants or the target: the castes of ants (minor , major, medium, larvae ...) or the mushroom wheel.
- the combined preparation can also be formulated together, in the form of granules or powder, as described above and dispensed manually and / or automatically.
- the invention relates to a method of manufacturing a combined preparation according to the invention comprising the following steps:
- a mixing step, and A shaping step are identical to A mixing step, and A shaping step.
- the dosing step includes measuring a predetermined amount of at least one insecticide and at least one laccase inhibitor.
- the dosage corresponds to the production of a composition comprising at least one insecticide and of a composition comprising at least one laccase inhibitor in levels defined to obtain the combined preparations of the invention at the contents, concentrations and / or mass ratio such as as described above or the production of a single composition comprising a laccase inhibitor and an insecticide also defined to obtain the combined preparations of the invention at the contents, concentrations and / or mass ratio as described above.
- the technical realization of an assay is established in the usual way according to a person skilled in the art.
- the mixing step comprises incorporating the at least one laccase inhibitor and the at least one insecticide homogeneously, separately or together in a matrix, said matrix being an excipient suitable for shaping. the combined preparation.
- at least one appetizer is added during this step in the concentrations described. Even more advantageously the at least one appetizing constitutes the matrix.
- one or more stages of evaporation of the solvents in which the weakly water-soluble active compounds would be dissolved perhaps applied.
- the duration of each step may vary depending on the solvent used; those skilled in the art will easily be able to determine the total evaporation of the solvent (s).
- the manufacturing process further comprises a shaping step in the form of granules or powder.
- the granules may have the laccase inhibitor or the insecticidal compound, may have the laccase inhibitor and the insecticidal compound, or granules may have the laccase inhibitor in combination with granules comprising the insecticidal compound.
- said granules are of a suitable size so that the harvester ants can bring them back to the colony, in the nest. Even more advantageously, the size of the granules is suitable for transport regardless of the size of the ant among the different castes of ants in the colony, thus promoting the importation and dispersion of the granules and therefore of the composition within the colony. the colony.
- the granules may have a size which resembles that of a grain of rice, typically about 5 mm long and 1 to 2 mm wide.
- any shape may be suitable, the criterion being that said granule is transportable by ants as mentioned above.
- the combined preparation can also take the form of powders so that the powder can contain the laccase inhibitor or can include the laccase inhibitor and the insecticidal compound or can include the laccase inhibitor combined with a powder. comprising the insecticidal compound.
- the shaping step comprises binding, for example with water or any other acceptable solution or liquid (such as for example soybean oil) having no repellent effect on ants, the mixture resulting from the mixing step, so as to obtain the desired consistency to allow adequate shaping, in the case of granules for example.
- the binder can itself constitute or comprise an appetite for ants.
- the powder or the granules obtained are dried before storage.
- the combined preparation according to the invention was tested in the form of granules comprising a combination of a microdosed insecticide (sulfluramide or fipronil) with a laccase inhibitor (cysteine or ascorbic acid), on sub-colonies of mushroom ants. These sub-colonies are calibrated, which ensures good comparability of the different conditions tested.
- a microdosed insecticide sulfluramide or fipronil
- laccase inhibitor cyste or ascorbic acid
- the tests are carried out on sub colonies of ants which originate from colonies of Atta cephalotes originating from Trinidad. These sub-colonies are calibrated and formed by associating 20 medium workers + 20 minor workers and a mushroom wheel of about 3cm 3 at the start of the experiment, placed in an enclosure as described in figure 1: Each sub-colony has a mushroom part and a "garden" part in which plants are renewed at will according to their consumption by the ants (cf. figure 1). All the tests are carried out on so-called stabilized colonies, for which, depending on the installation, we no longer observe any mortality which started the harvesting activity. Conventionally, the stabilization of colonies can take 5 to 15 days during which the dead ants are replaced.
- the combined preparations according to the invention as well as the control preparations were prepared in the form of granules.
- the different preparations are prepared in semi-sterile conditions, in a fume cupboard, the containers and tools are disinfected between each preparation.
- These granules are modeled so as to have the size and shape resembling that of a grain of rice (ie easy to transport by ants, conventionally 5 mm long and one to two mm wide) .
- a dough is formed with the different constituents (percentage by mass): -
- the matrix which is also appetizing, consists of a mixture of white wheat flour (such as that conventionally used in human food, of sucrose (10%, D (+) - sucrose, supplier: Labosi)) and citrus powder (10%, citrablend, dehydrated lemon zest powder from organic cultivation, mesh 80, supplier: Bureau Couecou, France).
- the active components are added at the concentrations as stated in Tables 1 or 2.
- the laccase inhibitors tested are L-cysteine (L-cysteine hydrochloride, SBM formulation) and ascorbic acid.
- an evaporation step may be required to evaporate said solvent.
- the sulfluramide (supplier: Sigma-Aldrich, ref. 91242) is previously diluted in methanol (Normapur quality, supplier: Prolabo) and the fipronil (supplier: VWR, ref. SUPL16785-50MG) in de acetone (Normapur quality, supplier: VWR), then mixed with the matrix, the mixture was subjected to evaporation (approximately 48 hours) before wetting.
- the preparations were made pasty by adding water (1 ml of water / 2g of preparation for a single composition), and then shaped in the form of granules as specified above .
- preparation 18 (Table 2, preparation in which the active ingredients are formulated separately), the granules of insecticides and laccase inhibitor are modeled separately, and subsequently combined. The quantity and mass concentrations of each of the formulations is established so as to obtain a combined preparation having the same concentrations and the same mass ratio between the laccase inhibitor and the insecticide as for preparation 2.
- the granules were dried for 48 hours in the fume cupboard and stored in sealed bottles.
- the plant is replaced by a small dish 3 cm in diameter containing 2 g of preparation to be tested.
- the cup containing the granules is left in place for 24 hours, then removed, before putting the plants back.
- the amount of preparation taken by the ants is deducted from the weighing of the amount remaining after 24 hours of presence in the colony (the weighing is carried out after drying for approximately 24 hours at room temperature due to the experimental humidity conditions).
- T + 1 then every 3 days up to 21 days measurements concerning the survival of the ants, the volume of the fungus and the consumption of plants is measured.
- the grinding wheel dieback is assessed by two aspects: the color of the grinding wheel and its volume.
- the mushroom wheels of leaf-cutter ant colonies under normal conditions are at least their upper third of a gray or salt and pepper color.
- the withering grindstones take on a whitish color.
- a bleaching index was therefore developed as a grinding wheel withering index; it corresponds to the ratio of gray grinding wheel height / total grinding wheel height; it makes it possible to measure the whitening of the grinding wheel.
- the variation in volume of each fungus of each colony at a time T is measured by assuming that the fungus has a shape similar to that of a cone and by relating the volume measured at time T to volume measured at T0.
- the volume V of the grinding wheel is therefore calculated according to the formula:
- H being the height of the grinding wheel and r being the radius of its base.
- Mortality corresponds to the cumulative number of deaths during the test (therefore a maximum of 40 over 21 days).
- the mortality can also be expressed according to the Abott formula which makes it possible to estimate the insecticidal efficacy of the preparations tested (EA, Abott efficacy), taking into account the existing mortality in the control trials.
- EA (1 - (number of deaths / number of deaths in witness) * 100
- preparation 18 which comprises the insecticide and the laccase inhibitor in two separate formulations.
- the grindstone fungus is important for the colony, because it is its gongylidia (hypertrophied hyphae) which provide food to all the actors of the colony (larvae, workers, soldiers and the queen).
- the fungus is particularly important for the larvae since they are placed there and covered with hyphae by the workers.
- the dieback of the larvae leads to the decline of the colony as the workers become listless (Lopes et al., 2005).
- the combined preparations of the invention therefore make it possible to target the colony as a whole by touching the grindstone fungus, a source of food for the entire colony and probably of paramount importance for the larvae.
- the suddenness of this effect on the fungus, associated with the mortality on the ants makes it possible to consider the inhibition of any relocation of the nests, as well as the prevention of the survival of a colony after the cessation of treatment, probably being affected by the destruction of the fungus.
- FIG. 3 No significant mortality is observed for the ants of the colonies treated with ascorbic acid alone (preparation 7). 50% mortality in the colonies are achieved from the 5th day for the colonies treated with the preparation comprising 1% ascorbic acid and 0.1% of sulfluramid, or preparation comprising 0.3% of sulfluramid as the sole active agent. It takes 8 days to observe 50% mortality in colonies treated with 0.1% sulfluramide alone.
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US17/774,103 US20220394977A1 (en) | 2019-11-08 | 2020-11-08 | Combined preparation and method for combating fungus-growing ants |
MX2022005453A MX2022005453A (es) | 2019-11-08 | 2020-11-08 | Preparacion combinada y metodo para la lucha contra las hormigas cultivadoras de hongos. |
BR112022008951A BR112022008951A2 (pt) | 2019-11-08 | 2020-11-08 | Preparação combinada e método para combater formigas cultivadoras de fungos |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FRFR1912582 | 2019-11-08 | ||
FR1912582A FR3102910B1 (fr) | 2019-11-08 | 2019-11-08 | Preparation combinee et procede pour la lutte contre les fourmis champignonnistes |
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WO2021089967A1 true WO2021089967A1 (fr) | 2021-05-14 |
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PCT/FR2020/052033 WO2021089967A1 (fr) | 2019-11-08 | 2020-11-08 | Preparation combinee et procede pour la lutte contre les fourmis champignonnistes |
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Country | Link |
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US (1) | US20220394977A1 (fr) |
BR (1) | BR112022008951A2 (fr) |
FR (1) | FR3102910B1 (fr) |
MX (1) | MX2022005453A (fr) |
WO (1) | WO2021089967A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001000034A1 (fr) | 1999-06-28 | 2001-01-04 | Ecosmart Technologies, Inc. | Compositions antiparasitaires contenant de l'essence de menthe |
WO2009117623A2 (fr) | 2008-03-19 | 2009-09-24 | Tyratech, Inc. | Lutte contre les ravageurs avec des mélanges d'agents de lutte contre les ravageurs naturels |
WO2017121881A1 (fr) | 2016-01-15 | 2017-07-20 | Universite Paris Est Creteil Val De Marne | Methodes et compositions pour le controle des fourmis champignonnistes |
-
2019
- 2019-11-08 FR FR1912582A patent/FR3102910B1/fr active Active
-
2020
- 2020-11-08 WO PCT/FR2020/052033 patent/WO2021089967A1/fr active Application Filing
- 2020-11-08 MX MX2022005453A patent/MX2022005453A/es unknown
- 2020-11-08 US US17/774,103 patent/US20220394977A1/en active Pending
- 2020-11-08 BR BR112022008951A patent/BR112022008951A2/pt unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001000034A1 (fr) | 1999-06-28 | 2001-01-04 | Ecosmart Technologies, Inc. | Compositions antiparasitaires contenant de l'essence de menthe |
WO2009117623A2 (fr) | 2008-03-19 | 2009-09-24 | Tyratech, Inc. | Lutte contre les ravageurs avec des mélanges d'agents de lutte contre les ravageurs naturels |
WO2017121881A1 (fr) | 2016-01-15 | 2017-07-20 | Universite Paris Est Creteil Val De Marne | Methodes et compositions pour le controle des fourmis champignonnistes |
Non-Patent Citations (17)
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BOULOGNE, I.PETIT, P.OZIER-LAFONTAINE, H. ET AL.: "Insecticidal and antifungal chemicals produced by plants: a review", ENVIRON CHEM LETT, vol. 10, 2012, pages 325 - 347, XP035132658, DOI: 10.1007/s10311-012-0359-1 |
BOURBONNAIS R.PAICE M.G.: "Oxidation of non-phenolic substrates. An expanded rôle for laccase in lignin biodégradation", FEBS, vol. 267, 1990, pages 99 - 102, XP000609026, DOI: 10.1016/0014-5793(90)80298-W |
CANTARELLI E. D.COSTA E. C.PEZZUTII R.OLIVEIRA L. S.: "Quantificaçâo de perdas no desenvolvimento de Pinus taedaapôs o ataque de formigas cortadeiras", CIÊNCIA FLORESTAL, vol. 18, 2008, pages 39 - 45 |
COLBY, S: "Calculating Synergistic and Antagonistic Responses of Herbicide Combinations", WEEDS, vol. 15, no. 1, 1967, pages 20 - 22, XP001112961 |
FISHER PJSTRADLING DJPEGLER ON: "Leaf cutting ants, their fungus gardens and the formation of basidiomata of Leucoagaricus gongylophorus", MYCOLOGIST, vol. 8, no. 3, 1994, pages 128 - 131 |
FORTI L. C.BOARETTO M. A. C.: "Formigas cortadeiras: Biologia, ecologia, danos e contrôle", vol. 61, 1997, DEPARTAMENTO DE DEFESA FITOSSANITÂRIA, UNIVERSIDADE ESTADUAL PAULISTA |
FOWLER H. G.FORTI L. C.RONAGNANO L. F. T.: "Applied myrmecology -A world perpective", 1990, WESTVIEW PRESS, article "Methods for the évaluation of leaf cutting and harvest" |
ISABELLE BOULOGNE ET AL: "Insecticidal and antifungal chemicals produced by plants: a review", ENVIRONMENTAL CHEMISTRY LETTERS, SPRINGER, BERLIN, DE, vol. 10, no. 4, 11 March 2012 (2012-03-11), pages 325 - 347, XP035132658, ISSN: 1610-3661, DOI: 10.1007/S10311-012-0359-1 * |
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JIAN-MING LUPETER H. LINQIZHI YAOCHANGYI CHEN: "Chemical and molecular mechanisms of antioxidants: experimental approaches and model systems", J. CEL/.MOL. MED., vol. 14, 2010, pages 840 - 860 |
LOPES, J.F.S.HUGHES, W.O.H.CAMARGO, R.S. ET AL.: "Larval isolation and brood care in Acromyrmex leaf-cutting ants", INSECT. SOC., vol. 52, 2005, pages 333 - 338, XP019318665 |
PRECETTI A. A. C. M.OLIVEIRA J. E.PALINI J. R.: "Perdas de produçâo em cana-de-açucar causadas pela sauva mata-pasto, Atta bisphaerica. Parte I", BOLETIM TÉCNICO COPERSUCAR, PIRACICABA, vol. 42, 1988, pages 19 - 26 |
QINLAN RJCHERRETT J M: "Aspects of the symbiosis of the leaf-cutting ant Acromyrmex octospinosus (Reich) and its food fungus", ECOLOGICAL ENTOMOLOGY, vol. 3, 1978, pages 221 - 230 |
REIS FILHO W.SANTOS F.STRAPASSON P.NICKELE M. A.: "Danos causados por diferentes niveis de desfolha artificial para simulaçâo do ataque de formigas cortadeiras em Pinus taedae Eucalyptus grandis", PESQUISA FLORESTAL BRASILEIRA, vol. 31, 2011, pages 37 - 42 |
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MX2022005453A (es) | 2022-05-19 |
FR3102910A1 (fr) | 2021-05-14 |
US20220394977A1 (en) | 2022-12-15 |
BR112022008951A2 (pt) | 2022-08-02 |
FR3102910B1 (fr) | 2022-05-06 |
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