Cocoon collecting and breeding device for prodenia litura
By designing a cocoon collection and insect raising device for twill twill larvae, the parasitic and unparasiated twill twill larvae are separated by the upper and lower cylinders, the problems of cocoon outbreak and cocoon eating caused by mixed feeding are solved, and the healthy growth of twill twill twill and the safe collection of cocoons is achieved, and the indoor expansion and breeding of Manila side groove cocoon bees is supported.
Patent Information
- Application Number
- CN202422022430.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In the existing cocoon expansion and collection device, parasitic twill larvae are mixed with unparasiated twill larvae, resulting in easy interference when cocoons are released, and even cocoons produced by parasitic twill twill are eaten by unparasitic twill twill twill, affecting experimental prevention and control.
A cocoon collection and insect raising device for twill twill larvae are designed. By setting up an upper cylinder and a lower cylinder, it is used to raise parasitic and unparasiated twill larvae respectively to avoid mixed feeding of the two. The parasitic twill larvae crawl into the upper cylinder through the first through hole and form cocoons, while the unparasitic twill larvae are raised in the lower cylinder and drilled into the soil through the second through hole during pupation.
It effectively avoids interference when the parasitic twill moths emerges, and prevents the cocoons from being eaten by the unparasitic twill moths, ensuring the healthy growth of the twill moths and the safe collection of the cocoons, supporting the indoor expansion and research of the Manila side groove cocoon bees.
Smart Images
Figure CN222941540U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cocoon collecting and insect raising device for Spodoptera litura, belonging to the technical field of insect raising equipment. Background Art
[0002] Spodoptera litura Fabricius is a species of the genus Spodoptera in the family Noctuidae of the order Lepidoptera. It is a crop pest. It is brown in color, with many stripes on its forewings, and a wide gray-white diagonal stripe in the middle, hence the name. Spodoptera litura mainly causes damage in the form of larvae, which have a varied diet and a large appetite. Newly hatched larvae damage the back of leaves, eating the mesophyll and leaving only the epidermis. After the third instar larvae, leaves are notched, broken, or even completely eaten up, and flower buds are eaten to cause defects, which can easily lead to disasters. The body color of the larvae varies greatly, and there are three main types: light green, dark brown, and khaki.
[0003] At present, the prevention and control of Spodoptera litura mainly focuses on physical, chemical and biological control. Among them, biological control is to use its natural enemy, the Manila side groove braconid wasp, to parasitize the 2-3 instar Spodoptera litura larvae, so that the growth and development of the parasitized Spodoptera litura stops and eventually dies. Therefore, the laboratory often uses a propagation and cocoon collection device to raise Spodoptera litura in order to collect the Manila side groove braconid wasp.
[0004] However, the commonly used device for propagation and cocoon collection is a simple feeding box, in which parasitized Spodoptera litura and unparasitized Spodoptera litura are raised. In the device for propagation and cocoon collection, since the parasitized Spodoptera litura larvae and the unparasitized Spodoptera litura larvae are mixed together for breeding, the parasitized Spodoptera litura larvae are easily disturbed by the unparasitized Spodoptera litura when they come out of the cocoon, and even the cocoons of the parasitized Spodoptera litura may be eaten by the unparasitized Spodoptera litura, which has an impact on the propagation of Manila side groove braconid wasps and the experimental control of Spodoptera litura. Summary of the invention
[0005] The utility model aims to provide a device for collecting and raising cocoons of Spodoptera litura, which can prevent parasitized Spodoptera litura larvae from being mixed with unparasitized Spodoptera litura larvae and prevent the cocoons from being disturbed by Spodoptera litura or being eaten by the cocoons.
[0006] The technical solution of the utility model is as follows: a cocoon collecting and insect raising device for Spodoptera litura, comprising a lower cylinder with an opening at the top, an upper cylinder arranged at the opening at the top of the lower cylinder, the upper cylinder being connected with the lower cylinder via first through holes densely distributed at the bottom thereof, a conical cocoon collecting gauze fixed inside the upper cylinder, the lower end of the cocoon collecting gauze contacting with the inner bottom of the upper cylinder, air holes arranged at the top of the lower cylinder above the cocoon collecting gauze, a partition plate arranged below the inside of the lower cylinder to separate it into an upper and lower area, the partition plate being densely distributed with second through holes, and soil filled inside the lower cylinder below the partition plate.
[0007] In the aforementioned cocoon collecting and insect raising device for Spodoptera litura, the top of the lower cylinder and the bottom of the upper cylinder are both provided with threads, and the lower cylinder and the upper cylinder are connected together by threads.
[0008] In the aforementioned device for collecting and raising cocoons of Spodoptera litura, the inner wall of the lower cylinder is provided with a downwardly extending slot, and the side wall of the partition is provided with a limiting block protruding outward, and the limiting block can be inserted into the slot.
[0009] In the aforementioned device for collecting and raising cocoons of Spodoptera litura, a vertical rod is arranged in the middle of the partition.
[0010] In the aforementioned cocoon collecting and insect raising device for Spodoptera litura, the diameter of the first through hole is 0.5 cm; the diameter of the second through hole is 2 cm.
[0011] In the aforementioned cocoon collecting and insect raising device for Spodoptera litura, the top surface of the upper cylinder is provided with an annular groove, and the top end of the cocoon collecting gauze is clamped into the annular groove via a clamping ring.
[0012] In the aforementioned cocoon collecting and insect raising device for Spodoptera litura, the surface of the clamp ring is covered with an elastic material layer; the depth of the annular groove is 1 / 2 of the height of the clamp ring.
[0013] In the aforementioned cocoon collecting and insect raising device for Spodoptera litura, the top of the upper cylinder is an open structure, and an upper cover is threadedly connected to the upper cylinder, and air holes are arranged on the upper cover. A breathable gauze is fixed on the top surface of the upper cover to cover the air holes.
[0014] In the aforementioned cocoon collecting and insect raising device for Spodoptera litura, the upper and lower cylinders are both made of transparent materials.
[0015] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model is provided with an upper cylinder and a lower cylinder, wherein the lower cylinder is used to raise the larvae of Spodoptera litura. When the larvae are parasitized by the Manila side groove braconid wasp, the larvae of Spodoptera litura will crawl into the upper cylinder through the first through hole and make cocoons on the cocoon collecting gauze, so as to facilitate the collection of cocoons; while the larvae of Spodoptera litura that are not parasitized by the Manila side groove braconid wasp are raised in the lower cylinder, and when the Spodoptera litura pupates, they will drill into the soil through the second through hole to lay eggs.
[0016] The utility model is provided with upper and lower cylinders, and can separate the parasitized and non-parasitized Spodoptera litura larvae according to the different habits of the parasitized and non-parasitized Spodoptera litura larvae, thereby avoiding the interweaving of the feeding work of the two types of Spodoptera litura larvae, avoiding the interference of the parasitized Spodoptera litura larvae when they come out of the cocoon, and even avoiding the phenomenon that the cocoons are not recovered in time and are eaten by the non-parasitized Spodoptera litura. Thus, the problem of artificial propagation technology of Manila side groove braconid wasps in the laboratory is well solved.
[0017] By setting up partitions, the feces of the Spodoptera litura can be separated from the lower soil, ensuring the cleanliness and moisture of the lower soil and creating a good place for pupation.
[0018] The utility model can complete the indoor propagation of Manila's Side Groove Braconid, and provide sufficient insect sources for the research of Manila's Side Groove Braconid. The feeding device directly feeds Spodoptera litura with tobacco, ensures the reproduction of the population, and can provide a large number of Spodoptera litura for subsequent experiments. The device simulates the cocooning conditions of a small external environment through a cocoon collection gauze, which is conducive to the cocooning of Spodoptera litura, and is convenient for counting the number of cocoons produced during experiments, providing favorable conditions for the normal supply of Manila's Side Groove Braconid. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the top view of the structure of the upper cylinder;
[0021] Figure 3 It is a schematic diagram of the top view of the structure of the lower cylinder;
[0022] Figure 4 Schematic diagram of the top view of the partition;
[0023] Figure 5 It is a schematic diagram of the structure of the clamp ring.
[0024] Figure numerals: 1-lower cylinder, 2-upper cylinder, 3-first through hole, 4-cocoon collecting gauze, 5-air permeable hole, 6-partition, 7-second through hole, 8-soil, 9-slot, 10-limiting block, 11-vertical rod, 12-annular groove, 13-clamping ring, 14-elastic material layer, 15-upper cover, 16-breathable gauze. DETAILED DESCRIPTION
[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.
[0026] Embodiment of the utility model: a device for collecting and raising cocoons of Spodoptera litura, such as Figure 1-5 As shown, it includes a lower cylinder 1 with an opening at the top, an upper cylinder 2 is arranged at the opening at the top of the lower cylinder 1, the upper cylinder 2 is connected with the lower cylinder 1 through first through holes 3 densely distributed on the bottom thereof, a conical cocoon collecting gauze 4 is fixed inside the upper cylinder 2, the lower end of the cocoon collecting gauze 4 is in contact with the inner bottom of the upper cylinder 2, an air hole 5 is arranged on the top of the lower cylinder 1 above the cocoon collecting gauze 4, a partition 6 is arranged at the lower part of the lower cylinder 1 to separate it into an upper and lower area, the partition 6 is densely distributed with second through holes 7, and the lower cylinder 1 below the partition 6 is filled with soil 8.
[0027] During use, the larvae of Spodoptera litura are first placed in the lower cylinder 1 for feeding, and some tobacco leaves are provided as food during feeding. Some of the larvae of Spodoptera litura will be parasitized by Manila's Side Groove Braconid Wasp, while some are not parasitized by Manila's Side Groove Braconid Wasp. In order to get rid of the parasitism of Manila's Side Groove Braconid Wasp, the larvae of Spodoptera litura parasitized by Manila's Side Groove Braconid Wasp will climb to a high place, and the device of the utility model is made based on this habit. The larvae of Spodoptera litura parasitized by Manila's Side Groove Braconid Wasp will climb upward through the first through hole 3 and enter the upper cylinder 2, and then climb upward along the cocoon collection gauze 4, so as to make a cocoon on the cocoon collection gauze 4. After the cocoon of the Spodoptera litura parasitized by Manila's Side Groove Braconid Wasp is completed, the cocoon collection gauze 4 can be removed, and the cocoons attached thereto can be collected to obtain the desired Manila's Side Groove Braconid Wasp. After the cocoon collecting is completed, the cocoon collecting gauze 4 is cleaned and then fixed in the upper cylinder 2 for next use.
[0028] The larvae of the Spodoptera litura that are not parasitized by the Manila lateral groove braconid continue to grow in the lower cylinder 1. When the unparasitized Spodoptera litura needs to pupate and lay eggs, they will pass through the second through hole 7 on the partition 6 to enter the lower area of the lower cylinder 1, and drill into the soil 8 to pupate and lay eggs. The lower cylinder 1 is removed, and the partition 6 is removed from the lower cylinder 1, and the eggs in the soil 8 can be collected. After the eggs are hatched, the larvae of the Spodoptera litura can be obtained, thereby replenishing the number of Spodoptera litura, ensuring the reproduction of the population, and providing a large number of Spodoptera litura for subsequent experiments.
[0029] The partition 6 is provided to facilitate the unparasitized larvae of Spodoptera litura to move in the upper area of the lower cylinder 1, and most of the feces discharged by them will adhere to the partition 6, so as to prevent the feces from being discharged directly on the surface of the soil 8, which will pollute the soil and hinder the adult Spodoptera litura from pupating and laying eggs in the later stage. The partition 6 can be taken out from the lower cylinder 1, and after cleaning its surface, it can be used again.
[0030] The top of the lower cylinder 1 and the bottom of the upper cylinder 2 are both provided with threads, and the lower cylinder 1 and the upper cylinder 2 are threadedly connected together. It is convenient to connect and fix the lower cylinder 1 and the upper cylinder 2 together to form a whole, and it is also convenient to disassemble.
[0031] The inner wall of the lower cylinder 1 is provided with a downwardly extending slot 9, and the side wall of the partition 6 is provided with a limit block 10 protruding outward, which can be inserted into the slot 9. Through the mutual cooperation of the limit block 10 and the slot 9, the partition 6 can be limited and fixed, which is convenient for the installation of the partition 6 and prevents the partition 6 from tilting and flipping.
[0032] A vertical rod 11 is arranged in the middle of the partition 6. When the partition 6 needs to be taken out for cleaning, the partition 6 can be conveniently pulled out by holding the vertical rod 11. After the lower cylinder 1 and the upper cylinder 2 are firmly connected and fixed by thread, the top of the vertical rod 11 just contacts the bottom surface of the upper cylinder 2, which facilitates the parasitized Spodoptera litura to climb up through the vertical rod 11, pass through the first through hole 3 and enter the upper cylinder 2.
[0033] The diameter of the first through hole 3 is 0.5 cm, which is convenient for the parasitized Spodoptera litura larvae to climb up and enter the upper cylinder 2. When the unparasitized Spodoptera litura larvae grow up, their volume increases and they cannot enter the upper cylinder 2 through the first through hole 3, thereby preventing the unparasitized Spodoptera litura from entering the upper cylinder 2 and affecting the cocooning of the parasitized Spodoptera litura, and preventing the cocoons from being eaten by the unparasitized Spodoptera litura. Normally, the unparasitized Spodoptera litura moves in the upper area of the partition 6 of the lower cylinder 1, but when the unparasitized Spodoptera litura needs to pupate and lay eggs, it will enter the soil 8 through the second through hole 7 to lay eggs. The diameter of the second through hole 7 is 2 cm, which is enough for the unparasitized Spodoptera litura adults to pass through.
[0034] The top surface of the upper cylinder 2 is provided with an annular groove 12, and the top end of the cocoon collecting gauze 4 is clamped into the annular groove 12 through a clamp ring 13. The annular groove 12 and the clamp ring 13 cooperate with each other to fix the large end of the cocoon collecting gauze 4 at the opening of the upper cylinder 2. After the Spodoptera litura has finished making cocoons, the cocoons attached to the cocoon collecting gauze 4 need to be collected. At this time, the clamp ring 13 can be removed to remove the cocoon collecting gauze 4 for convenient cocoon collection, and it is also convenient to clean the cocoon collecting gauze 4 for next use.
[0035] The surface of the clamping ring 13 is covered with an elastic material layer 14, which can increase the friction between the clamping ring 13 and the annular groove 12, prevent the clamping ring 13 from escaping from the annular groove 12, and better fix the cocoon collecting mesh 4.
[0036] The depth of the annular groove 12 is 1 / 2 of the height of the clamping ring 13. After the clamping ring 13 is inserted into the annular groove 12, part of the clamping ring 13 is exposed. When the cocoon collecting net 4 needs to be removed, the exposed clamping ring 13 can be quickly removed from the annular groove 12 by clamping it.
[0037] The top of the upper cylinder 2 is an open structure, and an upper cover 15 is threadedly connected to it. The upper cover 15 is provided with air holes 5. A breathable gauze 16 is fixed to the top surface of the upper cover 15 to cover the air holes 5. After the cocoon collecting gauze 4 is installed, the upper cover 15 is threadedly fixed to the upper cylinder 2. The air holes 5 on the upper cover 15 provide the required oxygen for the survival of the Spodoptera litura, and the breathable gauze 16 can prevent the Spodoptera litura from crawling out of the air holes 5 to the outside of the upper cylinder 2.
[0038] The lower cylinder 1 and the upper cylinder 2 are both made of transparent materials, which facilitates observation of the internal conditions of the lower cylinder 1 and the upper cylinder 2 .
[0039] The utility model aims to provide an indoor propagation device for parasitizing Spodoptera litura using Parasitidae manilaensis, which solves the technical problem of artificial propagation of Parasitidae manilaensis.
[0040] The larvae of Spodoptera litura are raised in the lower cylinder 1 and fed with tobacco leaves, and are propagated indoors in large quantities. The rearing conditions are a temperature of 25±1°C and a humidity of 75±5%, and the larvae of Spodoptera litura are parasitized by the Manila schizontidae to propagate the Manila schizontidae.
[0041] The utility model can be divided into an upper cylinder 2 for collecting cocoons and a lower cylinder 1 for feeding unparasitized Spodoptera litura. The upper and lower cylinders are connected by a threaded structure, but the upper and lower cylinders can also be used separately as long as they are covered. When the lower cylinder 1 is used alone, an upper cover 15 needs to be configured separately.
[0042] The utility model can complete the indoor propagation of Manila's Side Groove Braconid, and provide sufficient insect sources for the research of Manila's Side Groove Braconid. The Spodoptera litura is directly raised with tobacco, which ensures the reproduction of the population and can provide a large number of Spodoptera litura for subsequent experiments. The device simulates the cocooning conditions of a small external environment through the cocoon collecting gauze 4, which is conducive to the cocooning of Spodoptera litura and is convenient for counting the number of cocoons produced during the experiment. It provides favorable conditions for the normal supply of Manila's Side Groove Braconid.
Claims
1. A device for collecting and raising cocoons of Spodoptera litura, characterized in that: The invention comprises a lower cylinder (1) with an opening at the top, an upper cylinder (2) being arranged at the opening at the top of the lower cylinder (1), the upper cylinder (2) being connected to the lower cylinder (1) via first through holes (3) densely distributed at the bottom thereof, a conical cocoon collecting gauze (4) being fixed inside the upper cylinder (2), the lower end of the cocoon collecting gauze (4) being in contact with the inner bottom of the upper cylinder (2), an air hole (5) being arranged at the top of the lower cylinder (1) above the cocoon collecting gauze (4), a partition (6) being arranged at the bottom inside the lower cylinder (1) to separate the lower cylinder (1) into an upper area and a lower area, the partition (6) being densely distributed with second through holes (7), and soil (8) being filled inside the lower cylinder (1) below the partition (6).
2. The device for collecting and raising cocoons of Spodoptera litura according to claim 1, characterized in that: The top of the lower cylinder (1) and the bottom of the upper cylinder (2) are both provided with threads, and the lower cylinder (1) and the upper cylinder (2) are connected together by threads.
3. The cocoon collecting and insect raising device for Spodoptera litura according to claim 1, characterized in that: The inner wall of the lower cylinder (1) is provided with a downwardly extending slot (9), and the side wall of the partition (6) is provided with a limit block (10) protruding outward, and the limit block (10) can be inserted into the slot (9).
4. The device for collecting and raising cocoons of Spodoptera litura according to claim 3, characterized in that: A vertical rod (11) is arranged in the middle of the partition (6).
5. The cocoon collecting and insect raising device for Spodoptera litura according to claim 1, characterized in that: The diameter of the first through hole (3) is 0.5 cm; the diameter of the second through hole (7) is 2 cm.
6. The cocoon collecting and insect raising device for Spodoptera litura according to claim 1, characterized in that: The top surface of the upper cylinder (2) is provided with an annular groove (12), and the top end of the cocoon collecting gauze net (4) is clamped into the annular groove (12) via a clamping ring (13).
7. The cocoon collecting and insect raising device for Spodoptera litura according to claim 6, characterized in that: The surface of the clamping ring (13) is covered with a layer of elastic material (14); the depth of the annular groove (12) is 1 / 2 of the height of the clamping ring (13).
8. The device for collecting and raising cocoons of Spodoptera litura according to claim 1, characterized in that: The top of the upper cylinder (2) is an open structure, and an upper cover (15) is threadedly connected to the upper part thereof. The upper cover (15) is provided with a vent hole (5), and a ventilating mesh (16) is fixed to the top surface of the upper cover (15) to cover the vent hole (5).
9. The cocoon collecting and insect raising device for Spodoptera litura according to claim 1, characterized in that: The lower cylinder (1) and the upper cylinder (2) are both made of transparent material.