Artificial spawning induction method and spawning induction agent for lates calcarfer

Abstract

The invention provides an artificial spawning induction method and spawning induction agent for lates calcarfer. The artificial spawning induction method comprises the following steps of (1): performing indoor rearing and screening of breeding fish: putting lates calcarfer fry offsprings in an indoor culture pond for culture, and performing offspring screening and offspring protection to obtain spawning induction breeding fish to be reinforced; (2) performing reinforcing, ripening promotion and rearing on the breeding fish: performing reinforced culture on the obtained spawning induction breeding fish to be reinforced so as to promote gonadal development of the breeding fish; (3) performing breeding fish selection and anesthesia: screening the breeding fish after the reinforced culture, and then performing anesthesia; and (4), performing spawning induction on the breeding fish: injecting the spawning induction agent to the breeding fish after anesthesia treatment, putting the breedingfish after injection of the spawning induction agent into a spawning induction pond, and performing artificial spawning induction and insemination. According to the artificial spawning induction method for the lates calcarfer disclosed by the invention, culture and rearing are performed in an indoor water pond, and superior reserve breeding fish are obtained through screening; and besides, the reserve breeding fish are subjected to nutrition reinforcement and strengthened culture management, so that the gonadal development of the breeding fish is promoted, the culture mode of the breeding fishis optimized, the spawning induction agent and the dosage thereof for the breeding fish are optimized and determined, and artificial ripening promotion and spawning induction of the lates calcarfer are realized.

Description

technical field [0001] The invention relates to a method for inducing spawning of fish, in particular to a method for artificially inducing spawning of barramundi, and also relates to an oxytocic agent used in the method. Background technique [0002] Barramundi (Lates calcarfer) is an important economic fish in brackish water aquaculture. It lives in tropical and subtropical regions, such as the southern East China Sea and South China Sea, India, Myanmar and other places. Due to the fast growth rate of barramundi, it can grow to market size within 8 months, and the general growth rate is 1-2kg / year, and barramundi has many characteristics that make it suitable for coastal farming, such as in high turbidity However, it grows well in water with changing salinity, can adapt to extensive culture and cage high-density culture conditions, and is relatively easy to domesticate. Therefore, it has become one of the important objects of seawater cage culture and pond culture in South ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for artificially inducing spawning of barramundi, which solves the technical problems of long breeding period of barramundi and poor quality of fertilized eggs