A method for artificially inducing spawning and insemination of thick-shelled mussels

Abstract

A method for artificial oxytocin and fertilization of Mytilus coruscus comprises the following steps of a parent cultivating pool: building an outdoor cultivating cement pool with the dimension of 10cmx1.5mx1m, stocking inflatable stones, covering canvas above the cement pool to prevent rain and sunlight, and shading the periphery of the cement pool by dark cloth to regulate strength of light; selecting Mytilus coruscus which has new and integral shell surfaces, full gonads, complete gill, light red ovaries and white testes, and is free of damage and powerful in closure of double shells; preparing baits, wherein chlamydomonas live baits including cultured Dunaliella viridis, latymonas subcordiformis and Chaetoceros serve as primary baits, and artificial compound feed including spirulina powder, chlorella powder and yeast tablets serves as secondary baits; drying parent Mytilus coruscus with developed gonads in the shade for 6-8 hours, stimulating the parent parent Mytilus coruscus for 1 hour through running water, and feeding the parent parent Mytilus coruscus into prepared warming seawater.

Description

technical field [0001] The invention relates to an aquaculture method, in particular to a method for artificially inducing spawning and insemination of thick-shelled mussels. Background technique [0002] Mussels belong to the mollusca (Mollusca) bivalves (Bivalvia), and are common economic shellfish in my country's coastal areas. The mussels cultivated in my country mainly include Mytilusedulis, M·coruscus and Pernaviridis. Shengsi County, Zhejiang Province is the origin of thick-shelled mussels in my country and a concentrated breeding area for blue mussels. In 2005, the mussel breeding area was 1130hm 2 , the output reached 48,800,t, of which the cultured area of ​​thick-shelled mussels was 85hm2, and the output was 4,900,t. In recent years, due to the bullish market price of thick-shelled mussels, the economic benefits are 2 to 3 times higher than that of blue mussels. In order to pursue higher economic benefits of farming and meet the needs of marketization, breeding ...

AI Technical Summary

Problems solved by technology

In the past, the seed supply of thick-shelled mussels was mainly sourced from semi-artificial harvesting in sea areas, but in recent years, due to excessive fishing and poor protection, the natural resources of thick-shelled mussels have been exhausted, and natural seedlings have become very scarce. It has become the bottleneck that restrains the large-scale development of mussel culture. Therefore, it is urgent to develop the artificial seed production of mussel seedlings vigorously.

As early as the 1960s and 1970s, many domestic scientific research institutes conducted detailed research on the reproductive biology of sclerosus mussels, but so far there is still a lack of systematic research on large-scale productive seed production, and there are few literature reports.