Factory-like full-artificial propagation method of sebastes schlegeli

Abstract

The invention provides a factory-like full-artificial propagation method of sebastes schlegeli. The method comprises the following steps of 1) factory parent fish optimization and cultivation; 2) artificial insemination; 3) parent fish breeding after insemination; 4) parent fish pond arrangement and farrowing; and 5), fry rearing. According to the factory-like full-artificial propagation method ofthe sebastes schlegeli, the insemination success rate of parent fishes reaches 88.5% or above, the farrowing survival rate reaches 78.6% or above, the fry survival rate reaches 48.0% or above, high-quality fries with the average full length of 5.2 cm can be obtained after 2.5 months of cultivation, and the propagation efficiency of female parent fishes of the sebastes schlegeli is effectively improved; and the large-scale mass production of high-quality offspring seeds is broken through, the dependence of directly fishing parent fishes with offspring on wild resources and cage culture parentfish groups is solved, the problems of low factory mating rate, low offspring survival rate and the like are solved, and the method has higher popularization value.

Description

technical field [0001] The invention belongs to the technical field of seawater fish breeding; in particular, it relates to an industrialized full-artificial breeding method for flat scorpionfish. Background technique [0002] Xu's flat scorpionfish, Sebastes schlegelii (Hilgendorf, 1880), also known as Black Rockfish, Black Rockfish in English, is a kind of offshore cold-temperate demersal reef-loving fish belonging to the family Scorpionidae of the order Scorpionidae. Abroad, it is mainly distributed in the east and west coasts of North Korea, the south of Hokkaido in Japan, and the southern waters of the Sea of ​​Okhotsk. Domestically, it is mainly distributed in the Bohai Sea, Yellow Sea and East China Sea. Its meat is tender, delicious, rich in protein and low in fat. It enjoys the reputation of "black grouper" in the north and is very popular among consumers. Because of its strong disease resistance, low temperature resistance, rough food and fast growth, etc. It ha...