Method for cultivating new, convex-shell and thin-shell strain of Ostrea rivularis Gould in north

Abstract

The invention provides a method for cultivating a new, convex-shell and thin-shell strain of Ostrea rivularis Gould in the north. The method comprises the steps: collecting parent oysters of Crassostrea gigas and northern Ostrea rivularis Gould firstly, performing synchronous maturity promoting cultivation, when gonads of the parent oysters of Crassostrea gigas and northern Ostrea rivularis Gouldare mature synchronously, performing acquisition of mature eggs of Ostrea rivularis Gould and sperms of Crassostrea gigas, performing hybridization and fertilization so as to obtain a hybrid filial generation of the parent oysters, cultivating the filial generation after the hybrid group is obtained, adopting a microsatellite molecular marker technique to confirm that the first hybrid filial generation is the first filial generation of hybridization of Crassostrea gigas and northern Ostrea rivularis Gould, then adopting a truncated selection method to cultivate the first filial generation for1-2 years in a northern breeding sea area, and performing continuous one-to-one selfing on the hybrid strain so as to obtain the new, convex-shell and thin-shell strain of Ostrea rivularis Gould. Theobtained new strain of Ostrea rivularis Gould has the advantages of large shell convexity, thin shells, fast growth, high meat yield and the like.

Description

technical field [0001] The invention relates to a near river oyster breeding technology and method, in particular to a method for cultivating a new near river oyster by hybridization and self-breeding of the northern near river oyster, belonging to the field of aquatic products. Background technique [0002] Near River oyster (Ostrea rivularis Gould), which belongs to the family Ostridae and belongs to the genus Crassostrea, is mainly distributed in the south and north coasts of my country. Near River oyster is the main object of shellfish farming in my country. It is rich in nutrition and delicious, and is deeply loved by consumers. It is the largest economic shellfish in my country and has a history of nearly 1,000 years. The northern Oyster oyster belongs to the geographical subspecies of Oyster oyster, which is significantly different from the southern oyster in external morphology and molecular sequencing. The oyster in the north is mainly distributed in the Yellow Rive...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of thick shell, small shell convexity and low meat production rate of northern near river oysters, the advantages of near river oysters and long oysters belonging to the genus Macrophylla, thin shells, large shell convexity and high meat production rate of long oysters cultivated in the north were used. Through continuous multi-generation breeding of hybridization and self-breeding, a new strain of Oyster oyster near the river with convex shell, thin shell and high meat production rate was bred to overcome the current problems of small convex shell, thick shell and low meat production rate of the northern Oyster oyster. Promoting the recovery and sustainable development of oyster culture industry in the northern near river