METHOD FOR ESTABLISHING THREE-LINE ASSORTED BREEDING SYSTEM FOR ARGOPECTEN IRRADIANS IRRADIANS-ARGOPECTEN PURPURATUS HYBRID SCALLOPS AND APPLICATION THEREOF

摘要

A method for establishing a three-line assorted breeding system for Argopecten irradians irradians-Argopecten purpuratus hybrid scallops and application thereof. The three lines comprise a sterile male line, a maintenance line, and a restorative line of the Argopecten irradians irradians-Argopecten purpuratus hybrid scallop, wherein Argopecten irradians irradians-Argopecten purpuratus hybrid scallops are a hybrid progeny of Argopecten irradians irradians ova and Argopecten purpuratus sperm. First establishing a large quantity of Argopecten irradians irradians and Argopecten purpuratus first generation hybrids, and finding therein sterile males for selective breeding of the sterile male line; then successively backcrossing using Argopecten purpuratus sperm, respectively selectively breeding a sterile male line-maintenance line combination in which all progeny are sterile males, and a sterile male line-restorative line combination in which all progeny are hermaphrodites; and finally hybridising the sterile male line and maintenance line to produce sterile male line parent scallops and hybridising the sterile male line and restorative line to produce Argopecten irradians irradians-Argopecten purpuratus commercial fry. A scallop three-line assorted breeding system is established in an animal, effectively overcoming the challenge of self-fertilisation in hermaphrodite scallop hybrids; the current year yield is increased by over 50% compared to that of Argopecten irradians irradians.