CN102919215B - Method for efficiently trapping trachemys scripta elegans - Google Patents
Method for efficiently trapping trachemys scripta elegans Download PDFInfo
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- CN102919215B CN102919215B CN201210434012.6A CN201210434012A CN102919215B CN 102919215 B CN102919215 B CN 102919215B CN 201210434012 A CN201210434012 A CN 201210434012A CN 102919215 B CN102919215 B CN 102919215B
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Abstract
The invention discloses a method for efficiently trapping trachemys scripta elegans. The method includes that smelling bait is fresh dried fish and fresh dried shrimps; vision bait is little alive freshwater fish and alive river shrimps; a trapping device comprises a cage with an externally covered net, a transparent inlet baffle board is respectively arranged at cage ports at two ends of the cage and hanged above the cage ports, stopping rods are horizontally erected at positions of the cage ports, the positions of the cage ports correspond to the outer sides of lower portions of the inlet baffle boards, a plurality of small holes are arranged on the inlet baffle boards, weight increasing metal bars are arranged on the inner sides of lower edges of the inlet baffle boards, a floating device is arranged on the side wall in the middle of the cage, a bait bottle is arranged in the cage, a plurality of small holes are arranged on the wall of the bait bottle, a transparent box is arranged in the cage, and a plurality of small holes are arranged on the transparent box; and the trapping device is placed in a water area where the trachemys scripta elegans are to be trapped, a part of the bait bottle is immersed in the water by means of the floating device, the other part of the bait bottle floats on the water, the transparent box is immersed in the water, then the smelling bait is filled in the bait bottle, the vision bait is filled in the transparent box, and finally the trapping device is fixed for trapping the trachemys scripta elegans.
Description
Technical field
The invention belongs to aquatic animal trapping and fishery and fish for field, be specifically related to a kind of method of efficient trapping Trachemys scripta.
Background technology:
Trachemys scripta (Trachemys scripta elegans), also claims red ear tortoise, originates in cen.am., is evaluated as one of 100 invasive species that the world is the most dangerous by World Conservation Union.Trachemys scripta adaptive capacity to environment is strong, reproduction speed fast, omnivorousness, near ovum and the nestling of bird fish, shrimp, spiral shell, insect, tadpole, the frog, snake, water plants and waters of take is food, propagate Salmonella, with invasion ground Hard-shelled Freshwater Turtles competition existence resource, belong to typical external Harmful species, can do great damage to the bio-diversity of culture fishery and invasion ground Freshwater ecosystems.This kind successfully invasion in the world wides such as America beyond Europe, Africa, Australia, Asia and U.S. original producton location at present, causes serious ecological hazard and heavy economic losses to invading.
Due to Chelonian international trade, Trachemys scripta constantly enters Chinese market, the amount reproduction of domestic foster tortoise field in addition, and Trachemys scripta has extensively been full of Chinese Chelonian trading market in recent years, becomes the most cheap the most common tortoise kind on current Chinese Chelonian market.Because China lacks Trachemys scripta trade, cultivates and free movable strict control; common people's prevention awareness lacks; making religion free, cultivate escape, pet loses one's parents, enforces the law and the phenomenon long-term existence such as blindly free; cause Trachemys scripta to enter Chinese Main Waters; field ubiquity; entering part nature reserve even, ecological hidden danger and potential hazard are very large, have caused the attention of relevant expert and government department.
For the Trachemys scripta that enters wild environment, movable of mysterious movements, reaction when people is approached is responsive, is difficult to thoroughly remove, relatively environmental protection and effective way are traped exactly, and in trapping process, most important factor is exactly attractant effect and the trapping method of bait.At present, also there is no special bait and trapping method for Trachemys scripta, conventionally adopt the fishing gear of traditional fishing and terrapin to catch, do not use bait, or use the meats such as pork, chicken, the flesh of fish as bait, these baits will rot in the short time in water, lose attractant effect, do not have durability and a reusable feature, do not there is the effect that vision is lured yet, therefore conventional method is low to the capturing efficiency of Trachemys scripta, consuming time many, bait waste is large, the while, traditional fishing gear also easily damaged other rare Chelonians.
Summary of the invention:
A kind of method that the object of this invention is to provide efficient trapping Trachemys scripta, utilizes the trapping Trachemys scripta of the method energy persistent high efficiency, and time saving and energy saving, saves bait, easy to operate, and Environmental Safety, for field trapping Trachemys scripta provides solid technical support.
The method of efficient trapping Trachemys scripta of the present invention, is characterized in that, comprises the following steps:
(a) bait: comprise sense of smell bait and vision bait, described sense of smell bait is that fresh fish is done and fresh dried shrimps, makes with complete small fish and shrimp, and its salinity is no more than 5%; Described vision bait is fresh and alive fresh water small fish and river prawn;
(b) trapping device: this trapping device comprises the cage body that is covered with net, at cage body two ends, cage mouth place is respectively provided with a transparent inlet baffle, hang on cage mouth top, at the corresponding cage mouth place of inlet baffle lower outside, crossbearer makes the inlet baffle can only be to side oscillation in cage mouth, and obstruction bar that can not side oscillation outside cage mouth, inlet baffle is provided with several apertures, in inlet baffle lower limb inner side, be provided with weightening finish bonding jumper, on the sidewall at cage body middle part, be provided with flotation gear, in cage body, be also provided with bait bottle, on the bottle wall of bait bottle, there is several apertures, in cage body, be also provided with transparent box, in transparent box, there are several apertures,
(c) trapping device is put into the waters of wish trapping Trachemys scripta, by flotation gear, a bait bottle part is immersed in water, a part is on the water surface in addition, transparent box is immersed in water, then sense of smell bait is loaded in bait bottle, again vision bait is loaded in transparent box, then fixes trapping device trapping Trachemys scripta.
It is strong that described fresh water small fish and river prawn are preferably vitality, and motility is strong, bright-colored, as red and white fishes and shrimps.
Preferably, on the sidewall of cage body, be provided with stationary rope, by stationary rope, can make trapping device be fixed near the bank of trapping ground water body, and when checking trapping device, can move trapping device to bank by stationary rope.
Described cage body is cuboid.
The net of the described external cover of cage can be net or the plastic gauze of soft cord braiding, and mesh size can not be by being advisable with Trachemys scripta children tortoise.
Described flotation gear can make cage body swim on the water surface for empty plastic bottle or the rubber air bag of sealing, guarantees that cage body appropriateness emerges.
The lid of described bait bottle does not have hole, can prevent that rainwater from entering in bottle, and bottom has several holes.
Described transparent box is preferably the transparent plastic box of cuboid, with colourless transparent plastic, makes, and this has lid above plastic casing, all has some apertures on the wall of box, bottom and lid.
Described bait bottle preferably hangs on the middle part of cage body, and described transparent box also hangs on the middle part of cage body, is positioned at the below of bait bottle.
In described step (c), half is immersed in water preferably by flotation gear, to make bait bottle, and half is on the water surface in addition.
The present invention is based on prolonged and repeated experimental study, taken into full account the feature of utilizing of sense of smell and vision in Trachemys scripta predation process, the good bait of screening attractant effect, and bait has been carried out using cleverly, thus realized the attractant effect of persistent high efficiency.Use the method, can effectively trap Trachemys scripta in the wild, experiment shows, under the same terms, trapping efficiency in 5 days is the more than 2 times of traditional trapping method (using fresh meat bait), aspect the service time of bait, effectively the trapping phase is generally 2-3 days (after soaking in water, meat flavour is lost tradition fresh meat bait, rot, lost efficacy), effective trapping phase of the bait that this method adopts is more than 30 days, energy continuity, long-time performance trapping effect, and the tortoise of traping can be drowned phenomenon, the method is time saving and energy saving, save bait, easy to operate, Environmental Safety, cost is low, be conducive to utilization and extention.
Accompanying drawing explanation:
Fig. 1 is the structural representation of trapping device of the present invention and uses schematic diagram, and the schematic diagram of the softened front and back of inlet baffle; Wherein 1, cage body; 21,22, inlet baffle, 23,24, stop bar; 25,26, weightening finish bonding jumper; 3, flotation gear; 4, bait bottle; 41, aperture; 42, fresh fish is done and fresh dried shrimps; 5, stationary rope; 6, the water surface; 7, the cage body part that surfaces; 8, timber; 9, bank; 10, transparent plastic box; 11, fresh and alive fresh water small fish and river prawn.
Embodiment:
Following examples are to further illustrate of the present invention, rather than limitation of the present invention.
Embodiment 1:
As shown in Figure 1, the method for the efficient trapping Trachemys scripta of the present embodiment, comprises the following steps:
Bait: comprise sense of smell bait and vision bait, the fresh fish that described sense of smell bait is fresh water is done and fresh dried shrimps, and its salinity mass content is no more than 5%; Described vision bait be fresh and alive, that vitality is strong, motility is strong, bright-colored, as red and white fresh water small fish and river prawn.
Trapping device: this trapping device comprises and is cuboid, be covered with the cage body 1 of the net of soft cord braiding, cage body 1 cage mouth place, two ends is respectively provided with a water white poly (methyl methacrylate) plate as inlet baffle 21, 22, this inlet baffle 21, 22 hang on cage mouth top, on poly (methyl methacrylate) plate, be also provided with some apertures, facilitate current to pass through, inlet baffle 21, 22 is sagging under Action of Gravity Field, at the corresponding cage mouth place of inlet baffle lower outside, crossbearer makes the inlet baffle can only be to side oscillation in cage mouth, and obstruction bar 23 that can not side oscillation outside cage mouth, 24, cage mouth both sides are fixed at its two ends, along inlet baffle 21, 22 lower limb inner sides are provided with weightening finish bonding jumper 25, 26, weightening finish bonding jumper can be for the higher bonding jumper of density be (as iron bar, metal bar), it can increase the weight of inlet baffle lower end, to prevent water stream, wash inlet baffle open, at the middle part of the both sides of cage body 1 sidewall, establish the flotation gear 3 that Packed empty plastic bottle is made, at the middle part of cage body 1, be hung with bait bottle 4, on the bottle wall of bait bottle 4 and bottom, there are some apertures 41, diameter 0.5cm, on bottle cap, do not there is hole, can prevent that rainwater from entering in bait bottle 4, at cage body 1 middle part, be also provided with the transparent plastic box 10 that is shaped as cuboid, transparent plastic box 10 use colourless transparent plastics are made, this has lid above plastic casing, the wall of box, on bottom and lid, all there are some apertures, aperture size can not be escaped from and be advisable with fishes and shrimps, transparent plastic box 10 inner space sizes should be able to guarantee the fish as bait, shrimp can move about freely, this transparent plastic box 10 hangs on the middle part of cage body 1, be positioned at the below of bait bottle 4, on cage body 1 right-hand member sidewall, be also fixed with stationary rope 5.
Trapping device is put into lake or the more slow position of current, rivers brook of trapping Trachemys scripta, flotation gear 3 can make trapping device float on the water surface, half is immersed in water by flotation gear 3, to make bait bottle 4, half is on the water surface in addition, transparent plastic box 10 is immersed in water, then by sense of smell bait-dry and dry 20-30 gram of fresh dried shrimps 42(fresh fish from the fresh fish of fresh water, fresh dried shrimps 20-30 gram, its salinity does not all have to surpass 5%) be loaded in bait bottle 4, again by vision bait-fresh and alive, vitality is strong, motility is strong, fresh water small fish and the river prawn 11 of bright-colored (as red and white) are loaded in transparent plastic box 10, in each transparent plastic box 10, put fresh water small fish 5-8 bar, river prawn 5-8 only, then by stationary rope 5, be fixed on the timber 8 on bank 9, prevent that current from floating trapping device walk, and can be when checking trapping device, can move trapping device to bank by stationary rope 5.Bait-fresh fish smell dry and that dried shrimps 42 distributes in bait bottle 4 is dispersed in water and air by aperture 41, the fresh and alive fresh water small fish and the river prawn 11 that are contained in transparent plastic box 10 can be lured Trachemys scripta by vision, when Trachemys scripta smells the smell that fresh fish is dry and dried shrimps 42 distributes or sees fresh and alive fresh water small fish and river prawn 11, will swim to trapping device, then with head and back, push open easily and lure the water white poly (methyl methacrylate) plate of entrance office and enter in cage, after Trachemys scripta enters, poly (methyl methacrylate) plate is sagging sealing cage mouth under Action of Gravity Field, tortoise is enclosed in trapping device.Because bait-fresh fish is dry and dried shrimps 42 is contained in bait bottle 4, tortoise cannot be had bait-fresh fish and be done and dried shrimps 42, bait-fresh fish is dry can be used for a long time with dried shrimps 42, vision bait-fresh and alive small fish and river prawn 11 is loaded in transparent plastic box 10, tortoise also cannot be had, thereby do not need to change frequently, being enclosed in Trachemys scripta in trapping device can lean out head the water surface 6 and be exposed to the cage body part 7 that surfaces, breathe, thereby avoid being drowned of Trachemys scripta, realize continuity, for a long time trapping.
In 2 identical ponds, field, natural environment, pond size is 50m * 50m, the inside is respectively placed with 20 Trachemys scriptas, 6 trapping points of fixing selection in two ponds.
The point of in a pond 6 trapping therein, according to the method trapping Trachemys scripta of above-described embodiment 1, experimental period is 5 days-30 days, observes the trapping quantity of tortoise and the variation of bait quality every day.
6 trapping points in another one pond, trap according to conventional method, at trapping point, put fish pot, put into beef or pork in fish pot, trap Trachemys scripta, and experimental period is 5-30 days, observes the trapping quantity of tortoise and the variation of bait quality every day.
Result is, conventional method (fresh meat) trap effect on the same day is good, and after 2-3 days, bait is lost trap effect substantially, need to change bait.The cage trap that conventional method is used does not have flotation gear, and cage body sinks to the bottom, needs check every day and catches cage, take out in time the tortoise of traping, otherwise the tortoise of traping can be drowned in cage.The entrance of luring of conventional method is generally the funnel device that rope is made, and still have an opportunity to escape from cage by funnel, and entrance of the present invention is comprised of inlet baffle and obstruction bar after the tortoise that build is less enters, and Trachemys scripta cannot be out once entering.The method of above-described embodiment 1 had good trap effect in 10 days, and bait still had good trap effect in 11-30 days, and the tortoise catching there will not be in cage is drowned phenomenon, and the tortoise entering in cage also there will not be the phenomenon of escaping from cage.The average cage trap of conventional method was traped 6 tortoises in 5 days, and the average cage trap of the method for above-described embodiment 1 was traped 13 tortoises in 5 days.
Claims (10)
1. a method of traping Trachemys scripta, is characterized in that, comprises the following steps:
(a) bait: comprise sense of smell bait and vision bait, described sense of smell bait is that fresh fish is done and fresh dried shrimps, makes with complete small fish and shrimp, and its salinity is no more than 5%; Described vision bait is fresh and alive fresh water small fish and river prawn;
(b) trapping device: this trapping device comprises the cage body that is covered with net, at cage body two ends, cage mouth place is respectively provided with a transparent inlet baffle, hang on cage mouth top, at the corresponding cage mouth place of inlet baffle lower outside, crossbearer makes the inlet baffle can only be to side oscillation in cage mouth, and obstruction bar that can not side oscillation outside cage mouth, inlet baffle is provided with several apertures, in inlet baffle lower limb inner side, be provided with weightening finish bonding jumper, on the sidewall at cage body middle part, be provided with flotation gear, in cage body, be also provided with bait bottle, on the bottle wall of bait bottle, there is several apertures, in cage body, be also provided with transparent box, in transparent box, there are several apertures,
(c) trapping device is put into the waters of wish trapping Trachemys scripta, by flotation gear, a bait bottle part is immersed in water, a part is on the water surface in addition, transparent box is immersed in water, then sense of smell bait is loaded in bait bottle, again vision bait is loaded in transparent box, then fixes trapping device trapping Trachemys scripta.
2. the method for trapping Trachemys scripta according to claim 1, is characterized in that, described fresh water small fish and river prawn are that vitality is strong, and motility is strong, brightly painted fishes and shrimps.
3. the method for trapping Trachemys scripta according to claim 2, is characterized in that, described brightly painted fishes and shrimps refer to the fishes and shrimps of redness or white.
4. the method for trapping Trachemys scripta according to claim 1, is characterized in that, on the sidewall of cage body, is provided with stationary rope.
5. the method for trapping Trachemys scripta according to claim 1, is characterized in that, described cage body is cuboid.
6. the method for trapping Trachemys scripta according to claim 1, is characterized in that, the net of the described external cover of cage is net or the plastic gauze of soft cord braiding.
7. the method for trapping Trachemys scripta according to claim 1, is characterized in that, described flotation gear is empty plastic bottle or the rubber air bag of sealing.
8. the method for trapping Trachemys scripta according to claim 1, is characterized in that, the lid of described bait bottle does not have hole, and bottom has several holes.
9. the method for trapping Trachemys scripta according to claim 1, is characterized in that, described bait bottle hangs on the middle part of cage body, and described transparent box also hangs on the middle part of cage body, is positioned at the below of bait bottle.
10. the method for trapping Trachemys scripta according to claim 1, is characterized in that, in described step (c), half is immersed in water by flotation gear, to make bait bottle, and half is on the water surface in addition.
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| CN201210434012.6A CN102919215B (en) | 2012-11-02 | 2012-11-02 | Method for efficiently trapping trachemys scripta elegans |
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| CN201210434012.6A CN102919215B (en) | 2012-11-02 | 2012-11-02 | Method for efficiently trapping trachemys scripta elegans |
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| CN102919215B true CN102919215B (en) | 2014-03-26 |
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| CN109792981A (en) * | 2018-11-20 | 2019-05-24 | 广东省生物资源应用研究所 | A kind of trap and its method for entrapping for traping red ear tortoise |
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| US4437259A (en) * | 1981-05-06 | 1984-03-20 | Holyoak Hugh K | Turtle trap and process of trapping turtles |
| KR100927794B1 (en) * | 2007-04-28 | 2009-11-20 | 하흥용 | An animal trap |
| CN201282699Y (en) * | 2008-09-12 | 2009-08-05 | 谢小平 | Novel mouse trap |
| CN201846712U (en) * | 2010-10-14 | 2011-06-01 | 钱子炯 | Simple mouse-luring mousetrap |
| CN102273425B (en) * | 2011-06-21 | 2013-05-22 | 广东省昆虫研究所 | Safe and efficient terrapin trapping device |
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Address after: 510260 Xingang West Road, Guangdong, Guangzhou, No. 105, No. Patentee after: Guangdong Institute of biological resources application Address before: 510260 Xingang West Road, Guangdong, Guangzhou, No. 105, No. Patentee before: Guangdong Entomological Institute |
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Address after: 510260 No. 105 West Xingang Road, Guangzhou, Guangdong, Haizhuqu District Patentee after: Institute of zoology, Guangdong Academy of Sciences Address before: 510260 No. 105 West Xingang Road, Guangzhou, Guangdong, Haizhuqu District Patentee before: Guangdong Institute of Applied Biological Resources |