Korea and Mexico gulf scallop hybrid cultivation method

Abstract

Provided is a Korea and Mexico gulf scallop hybrid cultivation method. At the first year, good parent scallops are selected, maturation acceleration is performed on the parent scallops, ova of single Korea gulf scallop and sperms of single Mexico gulf scallop are collected and subjected to mixed insemination to establish Korea and Mexico gulf scallop first filial generation families, and a conventional gulf scallop breeding, keeping and offshore cultivation method is adopted to perform breeding; at the second year, good hybridization families are selected according to the phenotypes of the hybridization families obtained at the first year, good-phenotypic-trait individuals are selected from the good hybridization families, self-fertilization is performed for purification after maturation acceleration, and accordingly multiple Korea and Mexico gulf scallop first filial generation inbred families are established; the same method is adopted to continuously perform inbreeding for more than five generations, namely new variety of stable-inheritance, quickly-growing and large-sized scallops wide in temperature resisting range is obtained. The new variety simultaneously has the good advantages of the Korea gulf scallops and the Mexico gulf scallops. In addition, Korea and Mexico gulf scallop hybrids can be bred in most of sea areas in our country, the yield is improved by higher than 30% compared with the yield of Mexico gulf scallops bred in the southern of our country, and the Korea and Mexico gulf scallop hybrid cultivation method has great economic value.

Description

technical field [0001] The invention belongs to shellfish breeding technology, in particular to a method for cultivating a new hybrid offspring of Korean Gulf scallop and Mexico Gulf scallop-a method for cultivating Korean-Mexican hybrid scallop. Background technique [0002] The Gulf of Mexico scallop (Argopecten irradians concentricus) is a subspecies of the Gulf scallop on the Atlantic coast of the United States. It has the characteristics of fresh and tender meat, wide temperature adaptability, short growth cycle, fast fecundity, and easy breeding. It was introduced to China in 1991 and achieved successful breeding. At present, large-scale farming has been formed in Guangdong, Hainan, Guangxi and other places, and it has become the pillar industry of shellfish farming in the Beibu Gulf area. However, the Gulf of Mexico scallop itself is small, coupled with the gradual expansion of the breeding area and successive generations of breeding, resulting in frequent disease, ge...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for cultivating a new variety of Korean-Mexican hybrid scallop, so as to overcome the problems of frequent disease occurrence, germplasm degradation, and increased mortality of the existing Gulf of Mexico scallop