Establishment and stock breeding method for sinonovacula constricta families

Abstract

The invention relates to an establishment and stock breeding method for sinonovacula constricta families. The establishment and stock breeding method for the sinonovacula constricta families comprises four optimal selection processes, including, 1) carrying out the first optimal selection for parental sinonovacula constrictas so as to select parental sinonovacula constrictas with strong activity and normal body characteristics and having the weight larger than average weight by 15-20%, then selecting parental sinonovacula constrictas with the shell width / shell length proportion greater than the average proportion by 15-20%, directly placing the selected parental sinonovacula constrictas in a hasten parturition bed, and oxygenating for stimulation; 2) after oviposition and spermiation of the parental sinonovacula constrictas, carrying out the second optimal selection, pairing male and female sinonovacula constrictas with high yield to establish families, breeding the families respectively in breeding barrels until a young sinonovacula constricta period arrives; 3) when the sinonovacula constricta fries reach to about 1 cm, measuring the shell length of the sinonovacula constrictas in the families, carrying out the third optimal selection, weeding out families with high death rate and relatively slow growth speed, and transferring the rest families to an outdoor pond; 4) measuring growth data in different growth periods of the families, carrying out the fourth optimal selection, and selecting individuals with fast growth and strong activity as parental sinonovacula constrictas for next generation ofhte families, thereby carrying out stock breeding.

Description

technical field [0001] The invention belongs to the field of shellfish genetics and breeding, and specifically relates to a method for establishing a razor clam family and selecting improved varieties. Background technique [0002] The razor clam is an important tidal flat shellfish in my country and one of the four marine aquaculture shellfish in China. Because of its delicate meat, delicious taste and rich nutrition, the razor clam is deeply loved by consumers. Its market value is high and its breeding prospect is very broad. [0003] But along with the continuous development of the razor clam aquaculture industry, its breeding environment is deteriorating day by day, a large number of unexplained deaths of razor clams occur from time to time, and the growth rate of artificially propagated seed declines, causing the aquaculture production industry to be seriously hindered. This is closely related to the degradation of germplasm and the backwardness of germplasm innovation...

AI Technical Summary

Problems solved by technology

[0003] But along with the continuous development of the razor clam aquaculture industry, its breeding environment is deteriorating day by day, a large number of unexplained deaths of razor clam occur from time to time, and the growth rate of artificially propagated seedlings declines, causing the aquaculture production industry to be seriously hindered