Seabed fattening and trapping device for purple sea urchins

Abstract

The invention discloses a seabed fattening and trapping device for purple sea urchins. The device is provided with a cage (1) composed of a bottom surface and side surfaces, wherein the side surfacesof the cage (1) are provided with first meshes (2) with inner diameters of 10-12 cm, a main cable (3) is fixed to the center of the bottom surface of the cage (1); the upper end of the main cable (3)is connected to the floater (4), and auxiliary balancing cables (5) fixed to the upper ends of the side surfaces of the cage (1) are also connected to the floater (4); a suspension sleeve (6) is connected onto the main cable (3) in a sleeving manner; and a bait net bag (7) is arranged on the outer periphery of the suspension sleeve (6). By using the device, the conditions that the purple sea urchins have sufficient baits, and fatness and other qualities of the mature purple sea urchins meet the needs of consumers can be ensured; divers for diving and catching are not needed, so that the laborintensity of catching is reduced and catching efficiency is improved; and meanwhile, the sea urchins can be prevented from being damaged by the harvesting tools and dying, and product revenue is improved.

Description

technical field [0001] The invention belongs to the technical field of marine organisms, and in particular relates to a purple sea urchin seabed fattening and trapping device. Background technique [0002] Sea urchin is a synonym for aquatic animals of the class Echinodermata, and it is a class of invertebrates that live in shallow waters of the ocean. The types of sea urchins in northern my country mainly include Eizo horse dung sea urchin, purple sea urchin and yellow sea urchin (sea hedgehog), etc., which are important aquatic economic species. Ezo horse dung sea urchins have relatively short spines and can be cultured in abalone cages, while yellow sea urchins and purple sea urchins are not suitable for artificial breeding. At present, purple sea urchins are supplemented by means of multiplication and release, that is, seedlings are sown in specified sea areas by breeding boats, etc. After two to three years, the seedlings grow naturally to maturity, and then divers use...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the limitation of seabed bait resources, the purple sea urchins obtained from harvesting will appear uneven in fat and thinness, and the quality of some purple sea urchins such as plumpness is difficult to meet the needs of consumers;

[0004] 2. Diving for divers is labor-intensive, dangerous, and takes a long time. There are many external environmental constraints such as weather. In addition, purple sea urchins often inhabit seabed rock crevices, which increases the difficulty of harvesting. Sometimes, depending on the angle and strength If the shell and spines of purple sea urchins are damaged by harvesting tools, purple sea urchins are very easy to die due to inflammation at the damaged area, which affects product revenue.

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