Cage type cuttlefish spawning substratum

Abstract

The invention discloses a cage type cuttlefish spawning substratum, and aims to provide the cage type cuttlefish spawning substratum which can effectively prevent the conditions that a large number ofcuttlefish eggs are stacked together, slow development and even rotting death of a large number of cuttlefish eggs wrapped in the middle are caused, and the hatching rate is seriously reduced under the condition that the spawning efficiency of parent cuttlefish is not affected. The cage type cuttlefish spawning substratum comprises a mesh cage, the mesh cage comprises a bottom mesh plate, a top mesh plate and a side surrounding mesh plate connected with the bottom mesh plate and the top mesh plate, and a vertical guide sleeve is arranged on the top mesh plate; an intermittent self-adjusting egg attaching mechanism is also included and comprises a floating ball, a plurality of bionic eggs imitating the appearance of the cuttlefish eggs, a vertical guide rod arranged in the vertical guide sleeve in a sliding manner, a lower limiting block arranged on the vertical guide rod and a plurality of resistance sleeves sequentially arranged on the vertical guide rod from top to bottom in a sleeving manner; and the bionic eggs are hung on the vertical guide rod through connecting wires and are uniformly distributed at the positions, below the lower limiting block, on the vertical guide rod from top to bottom.

Description

technical field [0001] The invention relates to an egg-attaching device, in particular to a cage-type squid egg-laying attachment base. Background technique [0002] Cuttlefish need to lay their eggs on attachments, and they have higher requirements for attachments. Usually, they are selected where the fixation is firmer and the surface is smoother. In the sea area of ​​the spawning ground, due to the severe shortage of gorgonians, the main spawning attachments of squids, it is far from meeting the needs of squids for spawning. As a result, many fertilized eggs are attached to some tender branch-shaped seaweeds, and the squids attached to the seaweeds The fertilized eggs are easy to fall off when encountering the impact of water flow, or even fall off in a string. Once the squid fertilized eggs fall off and sink into the seabed mud, it will cause the death of the squid fertilized eggs and seriously reduce the hatching rate of the squid fertilized eggs. Therefore, while stren...

AI Technical Summary

Problems solved by technology

In the sea area of ​​the spawning ground, due to the severe shortage of gorgonians, the main spawning attachments of squids, it is far from meeting the needs of squids for spawning. As a result, many fertilized eggs are attached to some tender branch-shaped seaweeds, and the squids attached to the seaweeds The fertilized eggs are easy to fall off when encountering the impact of water flow, or even fall off in a string. Once the squid fertilized eggs fall off and sink into the seabed mud, it will lead to the death of the squid fertilized eggs and seriously reduce the hatching rate of the squid fertilized eggs. Therefore, while strengthening the work of proliferation and release , the repair of spawning attachments must be carried out simultaneously

For this reason, a large amount of artificial egg-attached bases are used to increase the attachments of squid spawning, but the inventor found in the long-term work and investigation that the number of eggs per string of squid spawning is extremely large, and the artificial egg-attached bases Each string of eggs can reach more than 500, and the number can even reach several thousand. A large number of squid egg strings often have a large number of squid eggs stacked together, causing a large number of squid eggs wrapped in the middle to be stunted or even The problem of rotting and death seriously reduces the hatching rate, which has caused serious obstacles to the reproduction of squid resources in natural sea areas

[0003] In order to solve this problem, the inventor applied for the Chinese Patent Publication No. CN110352881A on May 5, 2019. The name of the invention is a device for artificially inducing squid to lay eggs. The way of driving away the squid is to control the number of eggs in each string of squid eggs, so as to avoid a large number of squid eggs stacked together, so that it will not only frighten the squid in spawning, but also affect the spawning efficiency of the squid; Moreover, squid need to constantly change the spawning site (generally, the spawning capacity of a squid can reach several thousand), which will affect the spawning efficiency of squid; on the other hand, it will also greatly reduce the number of eggs per string , leading to a sharp increase in the demand for the number of artificial egg-attached

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