Off-season breeding method of bay scallop

Abstract

The invention relates to a bay scallop out-of-season breeding method. The bay scallop out-of-season breeding method comprises the steps that (1) in the summer of the first year, the breeding water temperature of parent scallops is controlled to fall day by day until gonad development of the parent scallops stops; (2) the breeding water temperature of the parent scallops is controlled to rise day by day until arrest of gonad development of the parent scallops is removed; (3) after the parent scallops spawn naturally, spawns are collected and incubated into scallop larvae; (4) after the scallop larvae grow to young scallops through cultivation, the young scallops are transferred to a natural sea area to be cultured; (5) when the water temperature of the natural sea area falls to below 6 DEG C, the young scallops are transferred to an overwintering area to overwinter; (6) in the spring of the second year, when the water temperature of the natural sea area rises to above 15 DEG C, the young scallops in the overwintering area are transferred back to the natural sea area to be cultured; (7) in the summer of the second year, grown-up scallops are harvested. According to the bay scallop out-of-season breeding method, the idle sea area and idle facilities are fully utilized, the aquaculture cost is lowered and the influences on growth of the scallops from harmful attachments in autumn aquaculture are avoided.

Description

technical field [0001] The invention relates to a method for cultivating shellfish, in particular to a method for seed propagation and breeding of bay scallops. Background technique [0002] Bay scallops (Argopecten irradiians Lamark) were introduced into my country by the Institute of Oceanology, Chinese Academy of Sciences in 1982. Since 1985, my country has promoted them on a large scale in Shandong and Liaoning provinces, and in 1987 to Hebei province. Due to the fast growth rate of bay scallops, they can reach commercial specifications in the same year, and soon a large and new shallow sea raft type bay scallop farming industry was formed. By 2000, it will reach more than 640,000 tons, accounting for 70% of the total production of scallop culture in China, forming one of the important objects of seawater culture. [0003] At present, in the northern coast of the Bohai Sea, due to the single species of shallow sea culture and the backward farming model, there are proble...

AI Technical Summary

Problems solved by technology

In addition, CN1545866 adopts natural sea area for overwintering, and the environment is uncontrollable

[0006] To sum up, the current single-season culture mode of bay scallops has caused a large number of idle sea areas and culture facilities, which has seriously affected the economic benefits of scallop culture. Therefore, it is necessary to develop double-season culture techniques for bay scallops in order to make full use of effective resources and achieve Optimization of farming

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