Method for artificially hatching fertilized eggs of micropterus salmoides

Abstract

An artificial hatching method for micropterus salmoides fertilized eggs comprises the steps that male parents and female parents of micropterus salmoides are manually injected with oxytocin and then placed in the same pond, the area of the pond is larger than or equal to three mu, the male-female ratio is 4: 6, filtering membrane water treatment equipment is adopted for irregularly purifying water, a high-quality water source is supplied, a submersible pump is used for pumping water to produce water flow, dissolved oxygen is sufficient, and the micropterus salmoides fertilized eggs are obtained. The water quality is checked every day, the PH is kept to be 7.0-7.5, the ammonia nitrogen content is smaller than 0.4 mg/l, the nitrite content is smaller than 0.3 mg/l, and compound feed is fed according to the proportion of the female fish to the male fish so that unnecessary loss caused by earning for the mating can be prevented. By adopting the method disclosed by the invention, the weever culture becomes simple and efficient, and the weever culture area is rapidly increased.

Description

technical field [0001] The invention relates to the technical field of aquatic artificial hatching, in particular to a method for artificial hatching of California perch fertilized eggs. Background technique [0002] The scientific name of the California perch is the largemouth bass (Micropterus salmoides), which belongs to the order Perciformes, the suborder Perciformes, the family Sunfish, and the genus Perch in taxonomy. It is native to the Mississippi River system in California, USA, and is divided into the northern subspecies and the Florida subspecies. At present, California sea bass has been widely introduced to countries such as the United Kingdom, France, South Africa, Brazil, and the Philippines. Taiwan Province of my country was introduced in the 1970s and has been bred for several generations. Shenzhen, Huiyang, Foshan and other places in Guangdong also introduced California perch fry in 1983, and artificially reproduced them successively in 1985. California per...

AI Technical Summary

Problems solved by technology

[0004] Many of our farmers have benefited from the promotion of the scientific and technological achievements of the institute, but in practice, we also found that because the water temperature suitable for spawning in California perch is relatively low and the incubation time is long, Saprolegnia is very prone to occur during the production process, which reduces the hatching rate, and the above The method of artificial reproduction of perch is suitable for small ponds, but not suitable for large-scale promotion