Method for overwintering and intermidiate breeding clam fry

Abstract

A method for overwintering culturing the young clam and the adult clam in the north includes culturing parent clam, spawning, incubating, overwintering culturing young clam and collecting adult clam. The young clam and the sand layer are flushed by strong water stream for high survival rate and high output. In the winter, the young clam is cultured in the netted case. Its advantages are high suvival rate up to 90% for winter or 69.6% for intermediate culture, and high quality of clam (90 mm for diameter and 100g for weight).

Description

Technical field: [0001] The invention relates to a method for overwintering clam seedlings and intermediate breeding. Background technique: [0002] Meretrix meretrix is ​​a delicious treasure produced in the sea. Its meat is white and tender, rich in animal protein. Regular consumption is of great significance to the promotion of human health. Meretrix meretrix has become a home-cooked seafood on people's tables. However, due to factors such as marine pollution, long-term overfishing and disease, the clams produced in the tidal flats are almost exhausted, and they can no longer meet the needs of people's lives. With the development of science and technology, we have only begun to explore Carry out artificial cultivation and cultivation. It is understood that the history of artificial cultivation of clam seedlings is as early as the 1970s. Some Japanese scholars have carried out research on indoor artificial cultivation of clams, but they have remained on the experimental sc...

AI Technical Summary

Problems solved by technology

However, due to factors such as marine pollution, long-term overfishing and disease, the clams produced in the tidal flats are almost exhausted, and they can no longer meet the needs of people's lives. With the development of science and technology, we have only begun to explore Carry out artificial cultivation and cultivation. It is known that the history of artificial cultivation of clam seedlings is as early as the 1970s. Some Japanese scholars have carried out research on indoor artificial cultivation of clams, but they have remained at the experimental scale.

In China, since the end of the 1970s, Xiamen Fisheries College, East China Sea Fisheries Research Institute of the Academy of Water Sciences, Jiangsu Provincial Marine Fisheries Research Institute and other units have also successively carried out research on indoor seedling cultivation of meretrix meretrix, and have made great progress. Technical difficulties have not been overcome, especially due to the lack of nursery and brood selection in the past, as well as inappropriate hatching and cultivation methods for spawning, and after diving in the sand, the juveniles suffocated due to a large amount of mucus secretion, and the mortality rate was as high as 60% -70% or more, the formation of a low seedling emergence per unit failed to raise seedlings, resulting in clam seedlings still staying in the exploratory stage of experimentation, failing to break through the technical difficulties of seedling raising