A kind of hiding and climbing device for blue crab larvae

Abstract

The invention relates to a mud crab larva hiding and clinging device which comprises a clinging component (3) and a culture pond, wherein the clinging component (3) comprises a support frame (1) and a flexible net (2); the support frame (1) is made of a hard plastic material and has a double-layer structure; the flexible net (2) is laid out and fixed on the double-layer structure of the support frame (1) in the longitudinal direction, transverse direction and vertical direction to form multiple hexahedron cavities for containing mud crab seedlings formed by the flexible net (2) in the support frame (1); the support frame (1) is bent repeatedly along the length direction, and the occupied volume is reduced; and some of the clinging components (3) are hung in the culture pond by thread ropes, and some are placed at the bottom of the culture pond so that the clinging components (3) are layered and staggered in the water body and also staggered from the positions of aeration holes in the culture pond.

Description

technical field [0001] The invention relates to a hiding and climbing device for blue crab larvae, which belongs to the technical field of blue crab larvae cultivation. Background technique [0002] During the breeding process of blue crab nursery, the larvae undergo a transition from planktonic to benthic. In the breeding process of blue crab seedlings, blue crab seedlings like to inhabit and cling to objects in the water, and individuals of different developmental stages and sizes have different preferences for the depth of the water body and the size of the mesh. Too dense gathering of blue crab larvae will also lead to fighting and killing each other, which greatly affects the survival rate of seedlings. [0003] The prior art has taken corresponding measures to prevent blue crab larvae from fighting and killing each other. For example, the invention patent document with the authorized announcement number CN202714076U discloses a hanging net for raising mud crab seedlin...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing technology is for the device for isolating and preventing the mud crab larvae from fighting each other, the isolation effect of the mud crab individual is general, still exists the situation that the crab seed fights, still can cause loss; Can only adopt the suspended The way, the plasticity of the hanging net is poor, it occupies a large area, the volume is large, and the arrangement in the nursery pool is not good, resulting in low seedling efficiency in the nursery pool and low utilization rate of the nursery pool; there is no slight difference in volume Mixed cultivation of different crab seedlings; the hanging net rigidity is very low, unstable, and it is inevitable to shake with the flow of water body, which will have a certain adverse effect on the cultivation of crab seedlings

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