Artificial seeding raising method for scylla paramamosain in small water body

Abstract

The invention relates to an artificial seeding raising method for scylla paramamosain in a small water body, which comprises the following steps: gradually increasing aeration quantity from the scylla paramamosain zoea cultivation phase and the megalopa cultivation phase to the young crab cultivation phase; collocating corresponding baits in each phase; from the day before differentiated II-phase zoea, changing the water every day, and adding algae to adjust water color, thus realizing the artificial seeding raising for scylla paramamosain in the small water body. The method has the advantages of low application requirements to the seeding raising, low investment, high efficiency, and easiness in understanding, can be quickly understood and handled by the farmers, is fit for artificial seeding raising in the inbred line breeding process, and has an excellent application prospect.

Description

technical field [0001] The invention belongs to the field of breeding mud crabs, in particular to a method for artificially raising seedlings of mud crabs in small water bodies. Background technique [0002] Scylla paramamosain belongs to Arthropoda, Crustacea, Decapoda, Portunidae, and Scylla. It is mainly distributed in the Yangtze River Estuary and beyond in my country. The south coastal waters are my country's important marine fishery resources and seawater cultured crabs. [0003] In recent years, the annual output of artificial breeding of blue crabs in my country has been stable at more than 100,000 tons, maintaining a stable development momentum. But, but so far, the seed of artificial cultivation also mainly comes from the natural seedling of sea area, is subjected to the restriction of sea area natural condition, and its quality and quantity all are difficult to obtain guarantee. The contradiction between the shortage of seedlings and the desire of fishermen to ex...

AI Technical Summary

Problems solved by technology

However, industrial seedlings have high requirements for seedling facilities, and it is difficult to widely promote them among ordinary farmers. In addition, the cost of seedlings is relatively high, and the selling price of crab seedlings is several times higher than that of natural seedlings, which is difficult to be accepted by farmers.

In addition, with the development of the breeding of new varieties of Scylla pseudocaves, the method of family selection has been introduced into the breeding work, and family selection needs to establish a large number of families in a short period of time, which cannot be satisfied by industrial seedling breeding technology. this demand