High-efficiency releaser for Choleus cunea with tenebrio molitor pupae as host

Abstract

The utility model discloses a high-efficiency releaser for Choleus cunea with tenebrio molitor pupae as hosts. The releaser comprises a centrifugal-tube-shaped tube body, a bee outlet is formed in the side face of the upper portion of the tube body, and a nylon screen is arranged on the circumference of the inner wall of the tube so that the bee outlet can be completely shielded. A connecting rope is connected at the joint of the pipe orifice on the pipe body and the pipe cover; the red paper sleeve is completely attached to the external warning mark of the pipe body. When the releaser is used for releasing the Choleopterus albidus, the survival rate of the Choleopterus albidus can be remarkably increased, the loss rate of tenebrio molitor pupae is reduced, the purpose of efficiently releasing the Choleopterus albidus is achieved, and the releaser can be repeatedly used to reduce the use cost.

Description

Technical Field

[0001] The utility model relates to the technical field of biological control, in particular to a releaser for a white moth black stick gnawing wasp taking a yellow powder beetle pupa as a host. Background Art

[0002] Tetrastichus septentrionalis Yang belongs to the family Eulophidae, the genus Tetrastichus, and the Howardi-group. The parasitism rate of this bee on the nymphal moth is as high as 12% to 24%. It is a dominant parasitic natural enemy of forestry leaf-feeding pests. In particular, the nymphal moth bred with the pupae of the yellow powder beetle (Tenebrio molitor) as an alternative host has broad prospects for development and utilization in the biological control of forest pests.

[0003] At present, there are roughly two types of simple releasers for breeding gnats, such as Chouioia cunea Yang, with tussah moth pupae. One is a conical wire releaser: see Chinese patent application number CN201920077438.8 for details, which mainly includes a wire, one end of which forms a plurality of loops from bottom to top, the cross section of the loop gradually increases from bottom to top, and the loop is a conical structure as a whole. A cavity is provided in the conical structure for placing naked pupae of tussah silkworms parasitized with black stick gnats, and the other end of the wire extends a distance from the loop, and a fixing ring is provided at the end of the wire, which is fixed to the hanging support rod of the tree trunk with a thumbtack. The other is a kraft paper funnel releaser: see Chinese patent application number CN201520848200.2 for details, which mainly includes kraft paper. The rectangular kraft paper is folded in half at an angle on both sides of the approximately middle position along the length direction to form a triangular funnel. The diameter of the hole at the lower end of the funnel is less than 15 mm. The overlapping sides of the two folded ends are hung on the tree trunk with thumbtacks, and the host pupae parasitized by the white moth black stick gnawing wasp are placed in the triangular funnel.

[0004] Both of the above two releasers have certain problems, as follows: the black-stick gnawing bees of the white moth bred with yellow powder beetle pupae as substitute hosts are easily affected by the natural environment during the release in the wild. Since the time when different pupae emerge is different and it is impossible to accurately control the time when they emerge, the use of the above two releasers will cause the loss of bees before release. In addition, when the above two releasers are used to release bees in the wild, the yellow powder beetle pupae are exposed to the air and are easily wetted by rain, burned by the sun, eaten by predatory natural enemies, and blown away by the wind, etc., which will have a certain impact on the number of bees emerging from the white moth black stick gnawing bees.

[0005] Therefore, it is necessary to develop an efficient releaser that can be used to release the white moth black stick gnawing wasp. Summary of the invention

[0006] In view of the fact that existing bee releasers are generally susceptible to the influence of the natural environment, which leads to a low number of bees released during the wild release process and a less than ideal release effect, the utility model proposes an efficient releaser for the white moth black stick gnawing bee with the yellow powder beetle as the host, which can achieve the purpose of efficiently releasing the white moth black stick gnawing bee.

[0007] In order to achieve the above purpose, the utility model solves it through the following technical solutions.

[0008] The invention discloses an efficient releaser for white moth black stick gnawing wasps which uses yellow powder beetle as host. The main body of the device is a centrifugal tubular tube body, and a tube cover connected to the tube body is used to close the tube opening on the tube body. A bee outlet is opened on the tube wall on the upper side of the tube body. A nylon screen with a length equal to the circumference of the inner wall of the tube is placed inside the tube body to completely cover the bee outlet hole. A connecting rope is provided at the connection between the tube opening and the tube cover for hanging the efficient releaser. The outside of the tube body is covered with a red paper cover which is completely in contact with the outer wall.

[0009] The internal volume of the tube body is 10 mL, and the interior is mainly a storage area for yellow powder beetle pupae (host pupae), and each tube can hold 1 to 5 yellow powder beetle pupae.

[0010] The inner wall of the tube body is further provided with a nylon screen with a mesh size of 8 and a specification of 40mm×72mm. The purpose of placing the nylon screen is to prevent predatory natural enemies from entering the releaser from the bee outlet to feed on the yellow powder beetle pupae.

[0011] The connecting rope is a nylon rope or a thin metal wire, which passes through the connection between the tube mouth and the tube cover of the centrifuge tube and is used to hang the releaser.

[0012] Preferably, there is a bee outlet with a specification of 10mm×8mm on the upper side of the tube body at a distance of 4-6mm (preferably 5mm) from the tube mouth of the centrifuge tube.

[0013] Preferably, it also includes a red paper sleeve that is completely attached to the outer wall of the tube body. The red paper sleeve can significantly reduce the attack of animals such as birds as a warning color, and can prevent the pupae of the yellow powder beetle (or other alternative hosts) from being burned. It optionally contains a warning sign, such as a warning slogan such as "Biological control, do not move". Before releasing the bees, the yellow powder beetle pupae that are close to the bees can be placed in the tube body in advance, and the bee outlet can be blocked with a red paper sleeve to prevent the loss caused by the premature emergence and escape of the small bees.

[0014] By using the high-efficiency releaser of the white moth black stick gnawing bee, the protection of the yellow powder bee pupae during the wild bee release process is significantly enhanced, and the purpose of high-efficiency bee release is achieved. The device of the utility model can effectively solve the problems of small bee loss and rainwater wetting, sunburn, predator feeding and wind blowing caused by the uneven emergence of some yellow powder bee pupae before bee release, further reduce the cost of bee release, and can be used for large-scale release of white moth black stick gnawing bees in the wild. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic structural diagram of a high-efficiency releaser of the white moth black stick gnawing wasp taking the yellow powder pupa as a host.

[0016] Figure 2 yes Figure 1 Top view of the .

[0017] Figure 3 yes Figure 1 Front view of .

[0018] Figure 4 yes Figure 1 Side view of.

[0019] Figure 5 It is a flat unfolding diagram of the red paper cover.

[0020] Explanation of the reference numerals: 1-tube cover, 2-connection between the tube mouth and the tube cover, 3-tube mouth, 4-bee outlet, 5-nylon screen, 6-yellow powder beetle pupa, 7-tube body, 8-connecting rope, 9-red paper cover. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the utility model of a highly efficient releaser of the white moth black stick gnawing wasp with the yellow powder beetle as the host in combination with the accompanying drawings and specific embodiments. The description of the structure of the highly efficient releaser of the white moth black stick gnawing wasp and the description of the use method are intended to provide a better understanding of the present invention, but do not constitute a limitation of the present utility model.

[0022] Embodiment 1: Device Embodiment

[0023] like Figure 1 As shown, an efficient releaser for white moth black stick gnawing wasps with yellow powder beetle as host, including a tube body 7 and a tube cover connected to the tube body, which is used to close the tube mouth 3 on the tube body, and a bee outlet 4 is opened on the tube wall of the upper side of the tube body 7, and a nylon screen 5 with a length of the circumference of the inner wall of the tube is placed inside the tube body 7 to completely cover the bee outlet 4; a connecting rope is provided at the connection 2 between the tube mouth and the tube cover for hanging the efficient releaser, and the outside of the tube body 7 is covered with a red paper cover 9 that is completely in contact with the outer wall.

[0024] In a preferred embodiment, the tube body 7 is in the shape of a centrifuge tube (a centrifuge tube can be directly used), and usually has an internal volume of 10 ml. The interior is a carrying area for the yellow powder beetle pupae, and 1 to 5 yellow powder beetle pupae can be placed therein.

[0025] In a preferred embodiment, a nylon screen is placed inside the tube body 7 and fits the inner wall of the tube body 7 completely. A rectangular bee outlet 4 with a specification of 10mm×8mm is provided on the side wall of the tube body 7 5mm away from the tube mouth. A completely fitting red paper cover 9 is provided on the outside of the tube body 7 and printed with warning slogans such as "Do not touch for biological control".

[0026] In a preferred embodiment, the connecting rope 8 is a nylon rope or a thin metal wire (such as a thin copper wire) passing through the connection 2 between the pipe opening and the pipe cover, and is used to hang the release device of the utility model on the tree trunk.

[0027] Embodiment 2: Device use embodiment

[0028] When the releaser of the utility model is used, a release point is set in accordance with the prescribed standards in the area to be controlled, that is, it is hung on a suitable branch or tree branch. In the forest test, a high-efficiency releaser of the white moth black stick biting bee with the yellow powder pupae as the host is used to release the bees, wherein the sequence is as follows: threading nylon rope or iron wire; threading nylon rope or iron wire; hanging the biting bee releaser; dragging the red paper cover to expose the bee outlet; the hanging state when the bee outlet is exposed, and the state of the white moth black stick biting bee when it is out.

[0029] The time of bee release should coincide with the mature larval stage and early pupation stage of the local gypsy moth, and a large number of black-stick gnawing bees should be bred in advance. The bee release should be carried out in weather with a temperature above 25℃, clear weather, and wind force less than level 3, preferably between 10:00 and 16:00. Bees should be released twice per generation, the first time should be during the mature larval stage of the gypsy moth, and the second time should be carried out 7 to 10 days after the first release.

[0030] Example 3: Comparison of the effects of different devices

[0031] The high-efficiency releaser of the utility model was compared with the conical wire releaser and the kraft paper funnel releaser. Under the same conditions, 10 releasers of each were placed in the test area, and repeated 3 times. The number of bees emerging from each releaser was counted 24 hours before release, and the results are shown in Table 1.

[0032] Table 1 Number of host pupae lost due to uneven bee release 24 hours before bee release

[0033] Release method Total number of hanging pupae Number of wasp pupae lost Loss rate (%) High-efficiency releaser of the utility model 30 0 0 Conical wire release 30 9 30.00％ Kraft Paper Funnel Releaser 30 10 33.33％

[0034] The observation was continued for 7 days and the losses of the yellow powder pupae in each releaser due to being wetted by rain, burned by the sun, attacked by predators and blown away by the wind were counted. The results are shown in Tables 2 to 5.

[0035] Table 2 Number of host pupae lost due to rain in forest experiment

[0036]

[0037]

[0038] Table 3 Number of host pupae lost by burns in forest experiment

[0039] Release method Total number of hanging pupae Number of pupae damaged by burns Destruction rate (%) High-efficiency releaser of the utility model 30 0 0 Conical wire release 30 2 6.67％ Kraft Paper Funnel Releaser 30 2 6.67％

[0040] Table 4 Number of host pupae lost to predation by natural enemies in the forest experiment

[0041] Release method Total number of hanging pupae Predatory natural enemies feeding Destruction rate (%) High-efficiency releaser of the utility model 30 0 0％ Conical wire release 30 6 20.00％ Kraft Paper Funnel Releaser 30 7 23.33％

[0042] Table 5 Number of host pupae lost by wind in forest experiment

[0043] Release method Total number of hanging pupae Number of pupae destroyed by wind Destruction rate (%) High-efficiency releaser of the utility model 30 0 0 Conical wire release 30 13 43.33％ Kraft Paper Funnel Releaser 30 4 13.33％

[0044] It can be seen from Tables 1 to 5 that the high-efficiency releaser of the white moth black stick gnawing wasp using the releaser of the present application can avoid the losses caused by the yellow powder beetle pupae being wetted by rain, burned by the sun, attacked by predators and blown away by the wind, compared with the conical wire releaser and the kraft paper funnel releaser.

[0045] It can be seen that the high-efficiency releaser of the utility model completely avoids the loss of small bees due to early release of bees by setting a draggable red paper sleeve, and also reduces the chance of damage to the yellow powder beetle pupae. The utility model has a simple structure and can be reused, greatly reducing the cost of biological control, and is suitable for large-scale bee release.

[0046] The above-described embodiments are only for illustration purposes and therefore cannot be used to limit the patent protection scope of the present utility model. That is, equivalent changes and modifications made according to the present utility model and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. An efficient releaser of the white moth black stick gnawing wasp with the yellow powder pupa as host, characterized in that: The main body is a centrifugal tubular tube body, and a tube cover connected to the tube body is used to close the tube opening on the tube body. A bee outlet is opened on the tube wall on the upper side of the tube body, and a nylon screen with a length equal to the circumference of the inner wall of the tube body is placed inside the tube body to completely cover the bee outlet hole; a connecting rope is provided at the connection between the tube opening and the tube cover for hanging the high-efficiency releaser, and the outside of the tube body is covered with a red paper cover that fits the outer wall completely.

2. The efficient releaser of the white moth black stick wasp with the yellow powder pupa as host according to claim 1, characterized in that: The internal volume of the tube body is 10 mL; the connecting rope is a nylon rope or a thin metal wire.

3. The efficient releaser of the black-stick wasp of the white moth with the yellow powder pupa as the host according to claim 1, characterized in that: The bee outlet is located at a position 4-6 mm away from the tube opening on the side of the tube body.

4. The efficient releaser of the black-stick wasp of the white moth with the yellow powder pupa as the host according to claim 3, characterized in that: The specifications of the bee outlet are 10 mm×8 mm.

5. The efficient releaser of the black-stick wasp of the white moth with the yellow powder pupa as the host according to claim 1, characterized in that: The mesh size of the nylon sieve is 8 mesh.

6. The efficient releaser of the black-stick wasp of the white moth with the yellow powder pupa as the host according to claim 5, characterized in that: The specification of the nylon screen is 40 mm×72 mm.

7. The efficient releaser of the white moth black stick wasp with the yellow powder pupa as host according to claim 1, characterized in that: The connecting rope passes through the connection between the pipe opening and the pipe cover.

8. The efficient releaser of the black-stick wasp of the white moth with the yellow powder pupa as the host according to claim 1, characterized in that: The specification of the red paper sleeve is 55 mm×80 mm.

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