Three-stage cultivation method for improving mating rate of parent sebastes schlegelii

Abstract

The invention provides a three-stage cultivation method for improving the mating rate of parent sebastes schlegelii. The three-stage cultivation method comprises the steps that 1, an indoor industrialaquaculture period is carried out; 2, an outdoor pond net cage temporary culture mating period is carried out; and 3, an indoor industrial natural overwintering cultivation and prenatal strengtheningcultivation period is carried out. According to the three-stage cultivation method for improving the mating rate of the parent sebastes schlegelii, three-stage cultivation including the indoor industrial aquaculture period, the outdoor pond net cage temporary culture mating period and the indoor industrial overwintering and prenatal strengthening cultivation period is carried out, especially in the outdoor pond net cage temporary culture mating period, water quality environmental conditions such as water temperature of a pond similar to that and a sea area in the critical mating period in October and November are fully utilized, and measures are taken from the technical links of male and female stocking ratio, water temperature change monitoring, illumination control, shelter setting, bait feeding and the like, so that the mating rate of the parent sebastes schlegelii is increased, and experiments verify that the mating rate of female parent sebastes schlegeli can reach 84.0% or abovethrough the method.

Description

technical field [0001] The invention belongs to the technical field of fish reproduction; in particular, it relates to a three-stage breeding method for increasing the mating rate of broodstock of Scorpius xushii. Background technique [0002] Xu's flat scorpionfish ( Sebastes schlegelii ), also known as black scorpion, belongs to Scorpioformes - Scorpionidae - Scorpion genus. It is widely distributed in my country's Bohai Sea, Yellow Sea and East China Sea coastal reefs. It is also distributed along the coasts of Japan and North Korea. It is a carnivorous fish at the bottom of the cold temperate sea. , mainly feed on fish and crustaceans, and also consume a large amount of cephalopods and shellfish. It lives in shallow coastal waters in spring and summer, and moves to deep sea in autumn. Its meat is delicious, and it has the reputation of "black grouper" in the northern coast, and it is also very popular in the fresh fish markets of overseas countries such as Japan and S...

AI Technical Summary

Problems solved by technology

Although Xu's flat scorpionfish has made a breakthrough in the artificial breeding technology of using wild broodstock with larvae, it has problems such as destruction of resources, inconvenient transportation, abortion of broodstock, and low survival rate of litters, and it is still impossible to obtain it by mating it in other ways. High mating rate female broodstock