Female epinephelus moara and male E. septemfasciatus crossbreeding method

Abstract

The invention discloses a female epinephelus moara and male E. septemfasciatus crossbreeding method, and belongs to the technical field of marine fish breeding. The female epinephelus moara and male E. septemfasciatus crossbreeding method comprises the steps that parent selection is carried out, wherein a four to five-year-old healthy mature female epinephelus moara is selected as a female parent, and a five to six-year-old healthy mature male E. septemfasciatus is selected as a male parent; parent breeding is carried out, the female parent and the male parent are bred respectively under the conditions that the temperature of water for breeding the female epinephelus moara parent ranges from 12 DEG C to 26 DEG C, the temperature of water for breeding the male E. septemfasciatus parent ranges from 8 DEG C to 26 DEG C, the salinity ranges from 2.8 % to 3.2 %, the pH value ranges from 7.8 to 8.2, and the content of dissolved oxygen is larger than or equal to 5 mg / L; artificial insemination is carried out; hatch is carried out. According to the female epinephelus moara and male E. septemfasciatus crossbreeding method, gonads of male and female parents of two varieties mature synchronously through the technical means such as temperature regulation and nutrition regulation; a filial generation is obtained through artificial insemination, and has the excellent characteristics of the high growth rate and resistance to low temperature.

Description

technical field [0001] The invention belongs to the technical field of seawater fish breeding, and in particular relates to a hybrid breeding technology of moire grouper female and seven-banded grouper male. Background technique [0002] Moire grouper (Epinephelus moara) and seven-banded grouper (E.septemfasciatus) belong to the order Perciformes, the family Serranidae, the subfamily Epinephelinae, and the genus Grouper. Moire grouper is a warm-temperate middle-lower fish, mainly distributed in the East China Sea and South China Sea, and is a large fish species with a relatively fast growth rate among groupers; seven-banded grouper is a cold-temperate reef fish, mainly distributed in On the coasts of the Yellow Sea and the East China Sea, it is the only cold-temperate rare fish in the north. It has the characteristics of large size, low temperature resistance, and high nutritional value. It is one of the excellent species for seawater farming. The female parent of moire gro...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no report on the hybrid breeding of moire grouper (♀) and seven-banded grouper (♂) at home and abroad. Although there are successful cases of distant hybridization among other grouper fishes, they all belong to tropical or subtropical species. , such as the hybridization of brown-spotted grouper and saddle-banded grouper (Laizhou Mingbo Aquatic Products Co., Ltd. published a patent in 2013 "A Factory Hybrid Breeding Method for Brown-spotted Grouper and Saddle-spotted Grouper", which can be used for reference not much