Automatic trapping and sampling device special for corpse-addictive insect community succession law research

Abstract

The invention belongs to the technical field of collection devices, and discloses an automatic trapping and sampling device special for corpse insect community succession law research, which comprises a box body, a detachable top cover arranged at the top of the box body and a detachable platform assembly arranged at the bottom of an inner cavity of the box body, the device further comprises a first capturing device and a second capturing device, and the first capturing device is fixed outside the box body and communicated with an inner cavity of the box body through a first funnel type valve; the second capturing device is arranged on the top of the detachable top cover and communicates with the interior of the detachable top cover. The device is simple in structure, easy to operate, capable of automatically separating corpse insects, high in capturing efficiency, low in measurement deviation and selection deviation and high in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of collection devices, in particular to an automatic trapping and sampling device specially used for studying the succession law of sarcophagous insect colonies. Background Art

[0002] In nature, when humans and other higher terrestrial vertebrates reach the end of their lives, their bodies often become the starting point for a series of complex ecological processes. Many necrophilous insects, such as flies, beetles, and mites, are attracted to the corpse one after another and use these "natural resources" to reproduce, thus gradually forming a unique and complex decay ecological community on the surface of the corpse. This community not only reveals the end of life, but also through careful observation of the succession of necrophilous insect communities, that is, the order and number of different types of insects appearing on the corpse over time, forensic entomologists can more accurately infer the time of death of the corpse, which is undoubtedly an extremely valuable clue for the investigation of criminal cases.

[0003] In order to scientifically grasp the general laws of the succession of sarcophagous insect communities in specific areas, in-depth and systematic investigation and research are particularly critical. However, traditional survey methods, such as relying on manual net sampling, can capture medium and large flies and beetles, but it is very easy to ignore those tiny but equally important sarcophagous insects and mites, which also play an indispensable role in the process of community succession. In addition, the artificial sampling process will inevitably cause interference to the environment, especially for those insects that are good at flying. Their escape often leads to incomplete data collection, which in turn affects the reliability and repeatability of the research results.

[0004] Based on the various defects of manual collection, various experimental devices have been developed in this field. For example, the patent with publication number CN203860286U (referred to as Patent 1) discloses a forensic insect succession experimental sample and data automatic collection equipment. The equipment of this patent can realize full automation of sampling and data collection, reducing the interference of human factors on the experiment; it can capture insect adults, larvae, pupae and pupal shells at the same time, realize efficient and comprehensive sampling, and reduce the interference of the sampling process on succession. For example, the patent with publication number CN218164057U (referred to as Patent 2) discloses a fly insect trapping device for studying the succession law of necrophilous insects, which can realize the two tasks of corpse succession and insect collection, and can realize batch collection of larvae and adults. According to the flight characteristics of flies, it can realize continuous collection of flies to make up for the missed collection due to manual collection.

[0005] Although the above two patents have improved the problems existing in manual collection, the regular vibration of the vibrator in the structure of Patent 1 drives insects to migrate to the collection chamber on the upper layer, which will interfere with the normal succession process. In Patent 2, fly maggots can escape from the holes for the discharge of corrupt liquid on the bottom of the device, and it is difficult for the larvae collection bottle to collect them completely, resulting in measurement deviations. At the same time, the main body is a high-density mesh, which is easily destroyed by opportunistic scavengers such as mice, wild cats, and wild dogs. This patent is only applicable to medium and large fly insects, and it is difficult to apply to other types of necrophilous insects. In addition, Patents 1 and 2 have the following common defects:

[0006] 1. Necrophagous insects include necrophilous flies and beetles, predatory beetles, omnivorous beetles and bees, among which necrophilous species are the most valuable for estimating the time of death. When multiple species enter the collection room at the same time, due to the narrow space, predatory beetles, omnivorous beetles and bees tend to actively attack and prey on necrophilous flies and beetles, causing the most valuable necrophilous insect samples to be damaged or even disappear, resulting in uncontrollable measurement deviations;

[0007] 2. In summer, the temperature is high. The insect samples trapped in the collection room frequently collide with the cage wall in an attempt to escape, which can easily break the limbs, antennae, bristles and other important organs and tissues of insect morphological classification. Dead insects become brittle and corrupt in the high temperature environment, resulting in incomplete samples collected. It is often difficult to accurately identify the species, and finally they cannot be included in the statistical samples, and there will be certain measurement deviations.

[0008] 3. Small and micro necrophilous insects such as flea flies, case flies, winged flies, moth midges, sand flies, parasitic wasps, etc. are easily overlooked and missed by researchers in the collection room, which can easily lead to serious selection bias. Summary of the invention

[0009] The purpose of the present invention is to propose an automatic trapping and sampling device specially used for studying the succession law of sarcophagous insect communities. The device has a simple structure, is easy to operate, can automatically separate sarcophagous insects, has high capture efficiency, low measurement deviation, and is highly practical.

[0010] The technical solution adopted to achieve the purpose of the present invention is:

[0011] An automatic trapping and sampling device specially used for studying the succession laws of necrophilous insect colonies, comprising a box body, a detachable top cover arranged on the top of the box body, and a detachable platform assembly arranged at the bottom of the inner cavity of the box body; it also includes a first capturing device and a second capturing device, wherein the first capturing device is fixed to the outside of the box body and communicated with the inner cavity of the box body through a first funnel-type valve; the second capturing device is arranged on the top of the detachable top cover and communicated with the inside of the detachable top cover.

[0012] Furthermore, an opening for placing or removing the detachable platform assembly is provided at the lower portion of the side wall of the box body; a movable door is provided on the side wall of the box body at the opening, and the movable door is hinged to the side wall of the box body.

[0013] Furthermore, the detachable platform assembly includes an inner platform and an outer platform, a hole is provided on the upper portion of the outer platform, and a filling material is provided inside the inner platform.

[0014] Furthermore, the box body is a square structure, the removable top cover is a four-sided pyramid structure that matches the square structure of the box body, and the inclined surface of the side wall of the removable top cover is provided with air holes; a notch is also provided in the center of the top of the removable top cover, and a connecting pipe is provided in the notch, and the second capture device is arranged on the top of the removable top cover and is connected to the inside of the removable top cover through the connecting pipe.

[0015] Furthermore, it also includes a second funnel-type valve and a third funnel-type valve arranged inside the box body, wherein the opening center of the second funnel-type valve is flush with the upper surface of the detachable platform assembly; and the third funnel-type valve is arranged on the upper part of the side wall of the box body.

[0016] Furthermore, the first funnel-shaped valve and the second funnel-shaped valve are both one-way funnel-shaped valves facing outward and downward; the second funnel-shaped valve is a one-way funnel-shaped valve facing outward and upward.

[0017] Furthermore, air holes are provided on the top of the first capturing device, and insect specimen preservation liquid is contained inside.

[0018] Furthermore, inside the second capturing device, an insect specimen preservation liquid is contained at a position below the height of the connecting pipe opening.

[0019] Furthermore, a temperature recorder and a camera are also arranged on the inner wall of the detachable top cover.

[0020] The beneficial effects of the present invention are:

[0021] 1. The channel of the device of the present invention mainly includes a first funnel-type valve, a second funnel-type valve, a third funnel-type valve, and a connecting pipe on a detachable top cover; the above structure can realize the controlled one-way flow of sarcophagous insects inside and outside the device, and induce different types of sarcophagous insects to automatically separate according to their habit differences, with high capture efficiency.

[0022] 2. The first capture device and the second capture device of the device of the present invention can also kill all insects instantly and preserve them for a long time, effectively reducing the phenomenon in the prior art that a large number of live insects prey on each other, insect bodies collide with the net wall, and dead insects rot and become brittle in a high temperature environment. It also completely avoids the serious selection bias caused by researchers easily ignoring small and micro species when killing and collecting insects in insect net traps;

[0023] 3. The sides of the box and the detachable top cover of the present invention are made of acrylic or other transparent materials, which have strong light transmittance. After the device starts running, there is no need to frequently open the inner cavity of the device. It can be observed and recorded without disturbing flies, bees and other flying insects and various larvae on the corpse, which further reduces the measurement deviation.

[0024] 4. The present invention has a simple structure, is easy to operate, and is highly practical. When in use, place the box outdoors or indoors, open the side movable door, put in the detachable platform assembly, close the movable door, and lock the movable door; then place the fresh animal carcass on the detachable platform assembly, cover the detachable top cover on the upper surface of the box, and the device can start running. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0027] Figure 2 It is a perspective structural schematic diagram of the present invention.

[0028] Figure 3 It is a structural schematic diagram of the cooperation between the detachable top cover and the second capturing device of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the detachable platform assembly of the present invention.

[0030] Figure 5 It is a structural schematic diagram of the first funnel-type valve and the second funnel-type valve of the present invention.

[0031] Figure 6 The present invention Figure 5 A right view structural schematic diagram of .

[0032] Figure 7 It is a structural schematic diagram of the third funnel-type valve of the present invention.

[0033] Figure 8 The present invention Figure 7 A right view structural schematic diagram of .

[0034] In the figure: 1. box body; 2. detachable top cover; 3. inner platform, 4. outer platform; 5. first capture device; 6. second capture device; 7. first funnel valve; 8. movable door; 9. connecting pipe; 10. second funnel valve; 11. third funnel valve; 12. temperature recorder; 13. camera; 14. lock; 15. buckle cover; 16. first funnel body; 17. first connecting ring; 18. first loose-leaf; 19. first loose-leaf axis; 20. first screw hole; 21. second funnel body; 22. second connecting ring; 23. second loose-leaf; 24. second loose-leaf axis; 25. second screw hole. DETAILED DESCRIPTION

[0035] The examples are provided to better illustrate the present invention, but the present invention is not limited to the examples. Therefore, those skilled in the art may make non-essential improvements and adjustments to the implementation scheme according to the above invention content, which still fall within the protection scope of the present invention.

[0036] like Figures 1 to 8 As shown, an automatic trapping and sampling device specially used for studying the succession law of necrophilous insect communities includes a box body 1, a detachable top cover 2 arranged on the top of the box body 1, and a detachable platform assembly arranged at the bottom of the inner cavity of the box body 1; it also includes a first capturing device 5 and a second capturing device 6, wherein the first capturing device 5 is fixed to the outside of the box body 1 and is connected to the inner cavity of the box body 1 through a first funnel-type valve 7; the second capturing device 6 is arranged on the top of the detachable top cover 2 and is connected to the inside of the detachable top cover 2.

[0037] The device of the present invention is mainly used to collect necrophilous insects on animal corpses, so as to prepare for the subsequent inference of the time of death of the corpse. The box 1 is used to place animal corpses and collect various insects. Its shape is a rectangular or square structure with an open top. When using this device, it is necessary to place the box 1 on a flat ground, and then tightly buckle the detachable top cover 2 on the top of the box 1. The way in which the box 1 and the detachable top cover 2 cooperate is a common way in the prior art, such as the common way in which a pot body and a pot cover cooperate; it can also be a flip-top type, that is, the detachable cover body is hinged on the box 1, and it can be adjusted according to actual needs.

[0038] The detachable platform assembly is mainly used to place animal carcasses, the first capture device 5 is mainly used to capture reptiles, and the second capture device 6 is mainly used to capture flying insects. The first funnel valve 7 can ensure that reptiles can enter the first capture device 5 in one direction, and the second capture device 6 is used to capture flying insects.

[0039] like Figure 1 and Figure 2As shown, in the present invention, an opening for placing or removing the detachable platform assembly is also provided at the lower part of the side wall of the box body 1; a movable door 8 is provided on the side wall of the box body 1 at the opening, and the movable door 8 is hinged to the side wall of the box body 1. The hinged connection between the movable door 8 and the side wall of the box body 1 is a common hinged connection in the prior art. In one embodiment of the present invention, a rectangular opening is provided at the bottom of a shorter side wall of the box body 1, and a first hinge 18 is provided at a vertical edge of the opening, and a hinge is provided at one end of the movable door 8, and two leaves of the hinge are respectively fixed on the side wall of the box body 1 and the movable door 8, and the movable door 8 can be rotated along the rotating shaft of the hinge to achieve opening or closing. In other embodiments, a pin shaft connection can also be used. In the present invention, a lock 14 is also provided at the other end of the movable door 8, and the lock 14 is a matching structure, one part of which is provided on the movable door 8, and the other part is provided on the side wall of the box body 1, and the two parts need to be used together when used. The lock 14 in the present invention is a common lock 14 in the prior art, such as a mortise lock, a hasp lock, and a handle lock, etc., which can realize the functions of locking and opening. The hasp lock is preferred in the present invention. After opening the movable door 8, the detachable platform assembly can be placed into the box body 1 through the opening of the movable door 8, or the detachable platform assembly can be taken out from the box body 1. In actual design, the opening method of the movable door 8 can also be designed as a common sliding plug plate type or a hinged flip-up structure.

[0040] like Figure 2 and Figure 4 As shown, in the invention, the detachable platform assembly includes an inner platform 3 and an outer platform 4, the outer platform 4 is provided with holes on the upper part, and the inner platform 3 is provided with filling material. The outer platform 4 is a rectangular parallelepiped structure, and the bottom surface and the side close to the movable door 8 are not provided with a plate. The inner platform 3 can be embedded in the outer platform, the bottom surface and four side surfaces of the inner platform 3 are all closed, only the top is not provided with a plate, and the bottom surface of the inner platform 3 is provided with a plurality of drainage holes. The filling material fills the entire inner platform 3, and the filling material is a mixed pupation bedding of large-particle vermiculite and sawdust (the mixed volume ratio of large-particle vermiculite and sawdust is (3-7): (7-3), preferably 3.5: 6.5, and the above material can induce the fly maggots and beetle larvae that have grown and matured on the corpse to drill into the bedding for pupation.

[0041] In actual operation, after the movable door 8 is opened outward, the inner platform 3 can be taken out from the movable door 8 like a drawer without affecting the decay process of the corpse. At the same time, the types and quantities of various larvae can be fully measured and evaluated, thereby overcoming the defect of the prior art that the larvae easily escape from the drainage holes and effectively reducing the measurement deviation. The detachable platform assembly is used to support the animal corpse, which is placed on the upper surface of the outer platform 4. The bottom surface of the box 1, the upper surface of the outer platform 4 and the bottom surface of the inner platform 3 are all provided with pores to facilitate the discharge of decay liquid from top to bottom, and to prevent the large area of ​​the pupation bedding from being contaminated by the decay liquid.

[0042] like Figure 2 and Figure 3 As shown, in the present invention, the box body 1 is a square structure, the removable top cover 2 is a quadrangular pyramid structure matching the box body 1 of the square structure, and the inclined surface of the side wall of the removable top cover 2 is provided with air holes; a notch is also provided at the center of the top of the removable top cover 2, and a connecting pipe 9 is provided at the notch, and the second capture device 6 is provided at the top of the removable top cover 2, and is connected to the inside of the removable top cover 2 through the connecting pipe 9. Inside the second capture device 6, the position below the opening height of the connecting pipe 9 is filled with insect specimen preservation liquid. In actual design, the connecting pipe 9 can be fixed on the removable top cover 2, and the lower end of the connecting pipe 9 can also be inserted into the top notch of the removable top cover 2 in a removable manner. The specific method can be selected according to actual needs. After flying upward through the connecting pipe 9, the flying insect enters the second capture device 6, and after falling into the insect specimen preservation liquid in the second capture device 6, the flying insect drowns inside. A buckle cover 15 is provided on the top of the second capturing device 6. When counting the insects in the preservation solution, the buckle cover 15 can be opened to count the insects in the preservation solution.

[0043] like Figures 1 to 3 As shown, in the present invention, an air hole is provided on the top of the first capture device 5, and the inside is filled with insect specimen preservation liquid. The reptiles on the outer platform 4 enter the first capture device 5 through the first funnel-type valve 7, and drown in the insect specimen preservation liquid after falling into the first capture device 5. A cover body is provided on the top of the first capture device 5. When counting is performed later, the insects in the preservation liquid can be counted by opening the buckle cover 15. The number of first capture devices 5 can be adjusted according to actual needs. The present invention is preferably set to four, which are respectively arranged at the bottom of the inner cavity of the box body 1 near the four corners, and the number of first funnel-type valves 7 corresponds to the first capture device 5.

[0044] The first capturing device 5 and the second capturing device 6 of the present invention are both filled with a long-lasting insect specimen preservation liquid, which has the effect of killing insects and preserving specimens at the same time. It can quickly kill all insects and other arthropods that leave the corpse indiscriminately, effectively avoiding the selection bias caused by manual killing and sampling in the prior art. At the same time, it reduces the measurement deviation caused by various reasons in the prior art, such as predation of live insects on each other, damage to insect bodies due to collision and difficulty in identification, corruption and brittleness of dead insects in a high temperature environment, and insect fright and escape caused by regular vibration.

[0045] like Figures 1 to 3 , Figures 5 to 8As shown, the present invention also includes a second funnel-type valve 10 and a third funnel-type valve 11 arranged inside the box body 1, wherein the opening center of the second funnel-type valve 10 is flush with the upper surface of the detachable platform assembly; the third funnel-type valve 11 is arranged on the upper part of the side wall of the box body 1, specifically at 1 / 3 of the height of the side wall.

[0046] The number of the second funnel-type valve 10 and the third funnel-type valve 11 is designed according to actual needs. In a preferred embodiment of the present invention, the number of the second funnel-type valves 10 is six, wherein two are respectively arranged on the two longer side walls of the box body 1, and one is arranged on the shorter side wall. Since the movable door 8 is opened on the box body 1, the second funnel-type valve 10 is not arranged on the side wall of the box body 1 on which the movable door 8 is installed, but is arranged on the movable door 8 to ensure the normal placement and removal of the detachable platform; the number of the third funnel-type valves 11 is eight, wherein two are respectively arranged on the four side walls of the box body 1.

[0047] like Figure 5 and Figure 6 As shown, the first funnel valve 7 and the second funnel valve 10 are both one-way outward downward funnel valves, and the structure is improved on the basis of an ordinary plastic funnel (the diameter of the upper opening of the funnel is 10 cm, and the diameter of the lower opening of the funnel is 1.5 cm). Specifically, the main body of the one-way outward downward funnel valve is composed of a first funnel body 16 and a first connecting ring 17. The lower opening of the funnel is covered with a large first loose-leaf 18 made of a stainless steel mesh (18-20 mesh), and the first loose-leaf shaft 19 is connected to the first funnel body 16 by means of a spring. The upper opening of the first funnel body 16 has an outer diameter of 10 cm and a height of 6-8 cm. The first connecting ring 17 is 2 cm wide. There are 6 first screw holes 20 with a diameter of 4.2 mm on the first connecting ring 17, which can be fixed to the box body 1 using national standard M5.0 screws and nuts. The large first loose-leaf 18 is made of a stainless steel mesh of 18-20 meshes, which can effectively prevent tiny flying insects such as flea flies, cheese flies, parasitic wasps, and beetle larvae from crawling out of the box body 1 through the mesh holes.

[0048] like Figure 7 and Figure 8As shown, the third funnel-type valve 11 is a one-way outward upward funnel-type valve. The one-way outward upward funnel-type valve has the same structure as the one-way inward downward funnel-type valve, except that the connection direction of the valve to the housing 1 is different, so the direction in which insects are allowed to pass is also completely opposite. Specifically, the main body of the one-way inward upward funnel-type valve is composed of a second funnel body 21 and a second connecting ring 22, and a small second loose-leaf 23 made of a stainless steel mesh (6 mesh) is covered above the lower opening of the funnel, which is connected to the funnel body by means of a second loose-leaf shaft 24, wherein the second loose-leaf shaft is an ordinary metal rotating shaft. The specifications of the second funnel body 21 of the one-way inward upward funnel-type valve and the connection method with the housing 1 are consistent with those of the one-way outward downward funnel-type valve. That is, the outer diameter of the upper opening of the second funnel body 21 is 10 cm, the height is 6-8 cm, the second connecting ring 17 is 2 cm wide, and there are 6 second screw holes 25 with a diameter of 4.2 mm on the second connecting ring 22, which can be fixed to the housing 1 using national standard M5.0 screws and nuts. The small second movable leaf is made of a 6-mesh stainless steel mesh, which allows small and tiny flying insects such as black flies, tooth flies, awn flies, flea flies, cheese flies, parasitic wasps, etc. that cannot push the movable leaf to enter the box 1 through the mesh. Since the small second movable leaf 23 is facing upward and most flying insects are phototactic, the flying insects generally do not leave the box 1 through the mesh of the small second movable leaf 23, but tend to fly to the top of the detachable top cover 2 and enter the second capture device 6.

[0049] The channels of the device of the present invention mainly include the first funnel valve 7, the second funnel valve 10, the third funnel valve 11, and the connecting pipe 9 on the detachable top cover 2, and there are no other open channels. Insects and arthropods that are not good at flying, such as beetles, ants, mites, etc., can be induced to enter the inner cavity of the box 1 from the second funnel valve 10 to reach the body, and insects with strong flying ability, such as flies, bees, moths and midges, can enter the inner cavity of the box 1 from the third funnel valve 11 to reach the body. At the same time, only the vast majority of insects and arthropods are allowed to leave from the first funnel valve 7 and the connecting pipe 9 on the detachable top cover 2, enter the first capture device 5 and the second capture device 6 respectively, and finally fall into the preservation solution and drown.

[0050] The device of the present invention can realize the controlled one-way flow of necrophilous insects inside and outside the device, induce different types of necrophilous insects to separate automatically according to their habits, and has high capture efficiency and strong practicality. In addition, all insects can be killed instantly and preserved for a long time, effectively reducing the phenomenon of a large number of live insects preying on each other, insect bodies colliding with the net wall, and dead insects becoming corrupt and brittle in a high temperature environment in the existing authorized scheme, and completely avoiding the serious selection bias caused by researchers easily ignoring small and micro species when killing and collecting insects in insect net traps.

[0051] like Figure 2As shown, in the present invention, a temperature recorder 12 and a camera 13 are also arranged on the inner wall of the detachable top cover 2. The temperature recorder 12 is a 24-hour temperature and humidity recorder, and the camera 13 is a high-definition digital time-lapse camera. Both are arranged on the detachable top cover 2, which can reduce insects from touching, thereby not affecting the normal use of the device.

[0052] The materials, parameters and partial connection relationships of each component in the present invention are as follows:

[0053] The side edge frame of the box body 1 is made of 304 stainless steel, and the bottom surface is a 304 stainless steel perforated plate, and the two are connected and fixed by bolts. The four sides of the box body 1 are thick acrylic plates with fine pores, which are connected and fixed to the frame by bolts. The above structure has high hardness and will not be damaged by opportunistic scavengers such as mice, wild cats, and wild dogs, which effectively reduces the measurement deviation. The side edge frame of the detachable top cover 2 is made of 304 stainless steel, and the four inclined surfaces are thick acrylic plates with fine pores, which are fixedly connected to the frame by bolts, welding or riveting. The upper surface of the outer platform 4 of the detachable platform assembly is a stainless steel perforated plate, and the side surface is made of 304 stainless steel. The inner platform 3 is made of high-density polyethylene (HDPE). The first capture device 5 and the second capture device 6 are both made of acrylic, and can also be transparent materials such as borosilicate glass, polycarbonate (PC), polyvinyl chloride (PVC) or polyethylene terephthalate (PET).

[0054] In the above structure, the hole diameter of the bottom surface of the box 1 is about 1.0 cm, and the hole diameter of the upper surface of the outer platform 4 is 2.5-4.0 cm. If the hole diameter of the punched hole on the bottom surface of the box 1 is too large, the mechanical strength will be reduced, and the detachable platform assembly cannot be supported. In addition, some beetles that are good at drilling holes will escape from the device from the bottom surface of the box 1. If the hole diameter of the punched hole on the upper surface of the outer platform 4 is too large, its mechanical strength will be weak, and it will not be able to support the carcasses of domestic pigs, sheep, dogs and other animals. After the carcasses are decomposed, a large amount of bones and hair will be scattered on the inner platform 3; if the hole diameter of the punched hole is too small, the larvae of medium and large beetles such as burying beetles and large rove beetles will not be able to drill into the litter to pupate.

[0055] The diameter of the fine pores on the acrylic plate on the four slopes of the side of the box body 1 and the detachable top cover 2 is about 1 mm, and five pores are set per square centimeter of the acrylic plate. Pores that are too small or too sparse will lead to poor ventilation in the inner cavity of the box body 1. When the pores are too large, tiny insects such as flea flies, cheese flies, and parasitic wasps can directly enter and exit the box body 1, and too dense pores will seriously affect the mechanical strength of the acrylic plate.

[0056] The box body 1, the removable top cover 2 frame, the outer platform 4 and the inner platform 3 can also be made of rust-proof aluminum alloy or other corrosion-resistant stainless steel materials, and the inner platform 3 can also be made of solid wood, artificial board, acrylic or other corrosion-resistant plastic materials. The sides of the box body 1 and the removable top cover 2 can be made of 16 or 18 mesh fine rust-proof diamond mesh or polyvinyl chloride (PVC), and the upper surface of the outer platform 4 can be made of 2 or 3 mesh thick rust-proof diamond mesh.

[0057] The first capture device 5 is connected to the housing 1 by a snap-on movable connection, so that the capture device can be removed for subsequent statistics. In other embodiments, the first capture device 5 can also be connected to the housing 1 by a screw-on, sliding plate or magnetic connection. The second capture device 6 can also be connected to the buckle cover 15 by a screw-on, sliding plate or magnetic connection. The connection between the connecting pipe 9 and the detachable top cover 2 can be a screw-on or magnetic connection.

[0058] The sides of the box body 1 and the detachable top cover 2 of the present invention are made of acrylic material or other transparent materials with strong light transmittance. After the device starts running, there is no need to frequently open the inner cavity of the device. Observation and recording can be performed without disturbing flying insects such as flies and bees and various larvae moving on corpses, further reducing measurement deviations.

[0059] The method of using the device of the present invention is as follows:

[0060] At the beginning of the experimental study, the box 1 is placed outdoors or indoors, the side movable door 8 is opened, the movable door 8 is closed after the detachable platform assembly is placed, and the movable door 8 is locked. The fresh animal carcass is placed on the detachable platform assembly, and the detachable top cover 2 is covered on the upper surface of the box 1, and the device can start to operate.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. An automatic trapping and sampling device for studying the succession law of necrophilous insect colonies, characterized in that: The invention comprises a box body (1), a detachable top cover (2) arranged on the top of the box body (1), and a detachable platform assembly arranged at the bottom of the inner cavity of the box body (1); and further comprises a first capturing device (5) and a second capturing device (6), wherein the first capturing device (5) is fixed to the outside of the box body (1) and communicates with the inner cavity of the box body (1) through a first funnel-type valve (7); and the second capturing device (6) is arranged on the top of the detachable top cover (2) and communicates with the inside of the detachable top cover (2).

2. The automatic trapping and sampling device for studying the succession law of sarcophagous insect communities according to claim 1 is characterized in that: An opening for placing or removing a detachable platform assembly is also provided at the lower part of the side wall of the box body (1); a movable door (8) is provided on the side wall of the box body (1) at the opening, and the movable door (8) is hinged to the side wall of the box body (1).

3. The automatic trapping and sampling device for studying the succession law of sarcophagous insect communities according to claim 1 or 2, characterized in that: The detachable platform assembly comprises an inner platform (3) and an outer platform (4); a hole is provided on the upper portion of the outer platform (4); and filling material is provided inside the inner platform (3).

4. The automatic trapping and sampling device for studying the succession law of sarcophagous insect communities according to claim 1 or 2, characterized in that: The box body (1) is a square structure, the removable top cover (2) is a quadrangular pyramid structure matching the box body (1) of the square structure, and the inclined surface of the side wall of the removable top cover (2) is provided with air holes; a notch is also provided at the center of the top of the removable top cover (2), and a connecting pipe (9) is provided at the notch; the second capture device (6) is arranged at the top of the removable top cover (2) and is connected to the inside of the removable top cover (2) through the connecting pipe (9).

5. The automatic trapping and sampling device for studying the succession law of sarcophagous insect communities according to claim 3 is characterized in that: The box body (1) is a square structure, the removable top cover (2) is a quadrangular pyramid structure matching the box body (1) of the square structure, and the inclined surface of the side wall of the removable top cover (2) is provided with air holes; a notch is also provided at the center of the top of the removable top cover (2), and a connecting pipe (9) is provided at the notch; the second capture device (6) is arranged at the top of the removable top cover (2) and is connected to the inside of the removable top cover (2) through the connecting pipe (9).

6. The automatic trapping and sampling device for studying the succession law of sarcophagous insect colonies according to claim 1, 2 or 5, characterized in that: It also comprises a second funnel-shaped valve (10) and a third funnel-shaped valve (11) arranged inside the box body (1), wherein the opening center of the second funnel-shaped valve (10) is flush with the upper surface of the detachable platform assembly; and the third funnel-shaped valve (11) is arranged on the upper part of the side wall of the box body (1).

7. The automatic trapping and sampling device for studying the succession law of sarcophagous insect communities according to claim 6 is characterized in that: The first funnel-shaped valve (7) and the second funnel-shaped valve (10) are both one-way funnel-shaped valves facing downward outward; the second funnel-shaped valve (10) is a one-way funnel-shaped valve facing upward outward.

8. The automatic trapping and sampling device for studying the succession law of sarcophagous insect communities according to claim 1, 2, 5 or 7, characterized in that: The first capturing device (5) has air holes on the top and contains insect specimen preservation liquid.

9. The automatic trapping and sampling device for studying the succession law of sarcophagous insect colonies according to claim 4 is characterized in that: Inside the second capturing device (6), an insect specimen preservation liquid is contained at a position below the height of the opening of the connecting pipe (9).

10. The automatic trapping and sampling device for studying the succession law of sarcophagous insect communities according to claim 1, 2, 5 or 7, characterized in that: A temperature recorder (12) and a camera (13) are also arranged on the inner wall of the detachable top cover (2).

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