Cage and method for breeding stichopus japonicus on sea

Abstract

The invention relates to a technology for breeding stichopus japonicus on the sea, in particular to a method for breeding stichopus japonicus by using cages on the sea with low cost and high livability. The breeding cage comprises a frame and a polythene net, and is characterized in that the a quadratic frame is adopted and is connected by round logs; each edge of the frame consists of an inner round log and an outer round log; the inner round log and the outer round log are flatly paved by using a board with the length of 30 cm and the width of 10 cm between the inner round log and the outer round log so as to be convenient for walking by staff; the inner round log and the outer round log are respectively hung with inner bolting-silk net cloth and outer polyethylene net cloth, the bottoms and the sides of the inner bolting-silk net cloth and the outer polyethylene net cloth are respectively provided with weigh blocks; each edge of the frame is provided with a float. The breeding method comprises the steps of choosing a sea area, making and throwing cages, hanging attaching bases, collecting seeds of the stichopus japonicus, propagating the seeds of the stichopus japonicus, attaching seeds of the stichopus japonicus, throwing and breeding, collecting seeds, and the like. The invention has advantages of energy saving, low cost, no pollution, high livability of breeding, and the like.

Description

Technical field: [0001] The invention relates to a japonicus japonicus seedling raising technology, in particular to a sea cucumber seedling raising method with low cost and high survival rate in net cages of japonicus japonicus. Background technique: [0002] As we all know, sea cucumbers (Apostichopus japonicus Selenka) belong to the phylum Echinodermata, the class Holothuria, the order Aposticoptera, and the family Apostichopidae in classification, and are mainly distributed in the Yellow Sea and Bohai Sea. Among the more than 20 kinds of edible sea cucumbers found in my country, sea cucumber is the species with the largest output and the highest economic value. In recent years, with the upsurge of sea cucumber cultivation, sea cucumber cultivation in various ways such as intertidal cofferdam cultivation, pond cultivation, and bottom sowing multiplication are coming rapidly. According to statistics from the Shandong Provincial Department of Oceans and Fisheries, in 2007,...

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Problems solved by technology

[0003] Now a large number of sea cucumber seedlings needed for sea cucumber breeding are basically produced by seedling factories. The seedling factories are generally built on the seashore where the seawater is clear, the wind and waves are small, the seawater is pollution-free, and there is no inflow of fresh water. The seedling factories are generally equipped with pump rooms, seawater Sedimentation tank, parent ginseng cultivation pool, spawning pool and other pools and circulation pipelines, artificial seedlings must go through parent ginseng harvesting, parent ginseng storage management, oviposition and fertilization, hatching, larvae cultivation, juvenile ginseng collection and cultivation, etc., and then Putting ginseng seedlings into the sea for cultivation, the disadvantages of the above-mentioned prior art are: firstly, the infrastructure construction is large, the investment is high and the risk is high; secondly, energy is wasted and the cost of seedling cultivation is high. The temperature of seawater should also be adjusted frequently to adapt to the living conditions of sea cucumbers. Third, the survival rate of seedlings and stocking is low. Fourth, the operation is complicated, management is inconvenient, and the labor intensity of workers is high.

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