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Hairtail parent and roe collection apparatus

A technology for collecting devices and fish eggs, which is applied in fishing, fish farming, climate change adaptation, etc., can solve the problems of loss of hairtail parent mortality, lack of fish egg collection device, high hairtail parent mortality, etc., to improve hairtail great pressure effect

Active Publication Date: 2015-10-21
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a kind of hairtail parent body and fish roe collection device capable of collecting the fish roe of the hairtail parent body in order to overcome the problem that the fishing nets in the prior art do not have a corresponding fish roe collection device
[0005] The second purpose of the present invention on the basis of the first purpose is to overcome the large pressure on the hairtail fish when the fishing nets in the prior art are lifted, which not only makes the hairtail parent body mortality rate higher, but also the fertilized eggs of the hairtail parent body are squeezed. The problem of loss due to pressure; provide a method that can effectively improve the high mortality rate of hairtail brood and the risk of fertilized eggs of hairtail broodstock caused by the high pressure of hairtail fish when fishing nets are pulled out without increasing the drag resistance of fishing boats Hairtail broodstock and fish roe collection device with the problem of being squeezed and lost

Method used

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  • Hairtail parent and roe collection apparatus
  • Hairtail parent and roe collection apparatus
  • Hairtail parent and roe collection apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1, such as figure 1 Shown, a kind of hairtail parent body and fish roe collecting device comprise cylindrical net cage 1. The upper end of the mesh cage is open and the lower end is closed. The upper opening of the cage is provided with a traction rope 5. The net cage comprises a net cage skeleton and a fishing net body 2 fixed on the net cage skeleton. The middle part of the mesh cage is provided with a mesh compartment 3. The mesh size of the mesh cage above the mesh interlayer is larger than the mesh size of the mesh cage below the mesh interlayer. In this embodiment, the mesh of the cage is the mesh of the fishing net body. The mesh of the net cage is diamond-shaped, that is, the mesh of the fishing net body is diamond-shaped. The mesh cage above the mesh compartment has a mesh size of 35x35 mm. The mesh cage under the mesh compartment has a mesh size of 0.5x0.5 mm. The net cage inner chamber above the mesh interlayer forms the hairtail collection cav...

Embodiment 2

[0027] Embodiment 2, the remaining structure of this embodiment is with reference to embodiment 1, and its difference is:

[0028] Such as figure 2 , image 3 As shown, the mesh interlayer 3 is made of fishnet mesh, and the mesh interlayer is funnel-shaped with a cross-sectional area gradually decreasing from top to bottom. The middle part of the lower end face of the net cage is provided with the slow extrusion of the hairtail body and the roe collection device 6 . This hairtail body slow extrusion and roe collection device comprises an opening at one end arranged on the net cage, the other end closes the storage box 61, and the inflatable airbag bag 63 and the inflation tube 62 that can be accommodated in the storage box. The storage box is fixed on the cage frame. The open end of the organizer faces the mesh divider. One end of the inflation tube communicates with the inflatable air bag, and the other end extends upwards along the outer surface of the cage to the tract...

Embodiment 3

[0030] Embodiment 3, the remaining structure of this embodiment is with reference to embodiment 1 or embodiment 2, and its difference is:

[0031] The mesh size of the mesh interlayer 3 is smaller than the mesh size of the mesh cage above the mesh interlayer; in this embodiment, the mesh of the mesh interlayer is diamond-shaped. The mesh compartment has a mesh size of 10x10 mm. The mesh size of the fishnet body 2 above the mesh compartment is 40x40 mm.

[0032] Such as Figure 4 , Figure 5 As shown, the mesh adjusting device for adjusting the mesh size of the mesh cage is provided on the mesh cage above the mesh interlayer. The mesh adjusting device includes several airbag devices 7, and at least one airbag device 7 is provided on the net wires 22 at the edge of each mesh 21 of the fishing net body 2 above the mesh compartment. The airbag device includes an installation pipe 73 sheathed on the network cable and an annular airbag bag 71 sheathed outside the installation pi...

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Abstract

The invention discloses a hairtail parent and roe collection apparatus, which aims to provide a hairtail parent and roe collection apparatus capable of collecting roes of hairtail parent, and comprises a cylinder-shaped mesh cage, wherein an opening is opened on an upper end of the mesh cage and a low end of the mesh cage is sealed; a mesh-shaped interlayer is set in the middle of the mesh cage; the mesh sieve size of the mesh cage above the mesh-shaped interlayer is larger than the mesh sieve size of the mesh cage below the mesh-shaped interlayer; a mesh cage inner cavity above the mesh-shaped interlayer is used to form a hairtail collecting cavity; and a mesh cage inner cavity below the mesh-shaped interlayer is used to form a roe collecting cavity.

Description

technical field [0001] The invention relates to a fishing device, in particular to a hairtail parent body and fish roe collection device for catching hairtail. Background technique [0002] Hairtail is a warm-temperate species that clusters near the bottom. It is widely distributed and has a high catch. It is one of the important economic fish species and catch objects in the East China Sea. At the same time, hairtail is one of the "four major fisheries" in the East China Sea. The only traditional fishing target that can form a large fishing season occupies an important position in fishery production and is the pillar product of the East China Sea fishery. The rise and fall of hairtail resources is related to the stability of the marine fishing industry in the East China Sea to a certain extent. [0003] In recent years, due to continuous high-intensity fishing, the resources of hairtail have declined, which has destroyed the balance of the hairtail population. In view of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A01K73/02
CPCA01K73/02Y02A40/81
Inventor 朱文斌周永东王洋柴学军
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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