A kind of cultivation method of sea cucumber with short aestivation period

Abstract

The invention discloses a method for cultivating sea cucumber strains with a short aestivation period, and belongs to the technical field of seawater culture. The present invention collects multiple geographical groups of Apostichopus japonicus parents, and controls the contribution rate of different geographical groups and males and females to offspring by controlling the ovulation time of each parent ginseng; in the summer high temperature season of the next year in the growth period, the next year's summer high temperature season takes 28°C as the node Apostichopus japonicus individuals in aestivation and early aestivation were selected, and the temperature node was selected at 25°C in the third year of the growth period; three generations of group breeding were carried out to obtain new strains of A. japonicus with short aestivation traits. The invention performs "double-end" and "double" screening on the aestivation time of sea cucumbers, artificially screens sea cucumber individuals in late entry and early exit aestivation states, and screens twice every three years in the growth and reproduction cycle to shorten the aestivation time of sea cucumbers. The breeding method can obtain japonicus japonicus germplasm with excellent traits of obviously shortening aestivation time, improve bait utilization rate and breeding efficiency, increase growth speed, shorten breeding cycle, and greatly improve japonicus japonicus breeding benefit.

Description

technical field [0001] The invention relates to a method for cultivating a short aestivation sea cucumber strain, which belongs to the technical field of seawater culture. Background technique [0002] Apostichopus japonicus is a typical temperate species. It is distributed in the vast northwestern Pacific coast from 35 degrees north latitude to 44 degrees north latitude. In my country, it is mainly distributed in the coastal waters of Shandong, Hebei, Liaoning and other places. It is one of the important economic species of mariculture in northern my country. Sea cucumber has high nutritional and medicinal value, and is known as the crown of ginseng. In recent years, due to the increase in market demand, the rapid development of sea cucumber aquaculture industry has been promoted. One of the highest industries, with an annual output value of up to 20 billion yuan at present, and it is the species with the highest output value of a single species of mariculture in my country....

AI Technical Summary

Problems solved by technology

The digestive tract of sea cucumbers degenerates during aestivation, and their weight also decreases. Therefore, the existence of this ecological habit obviously slows down the growth rate of sea cucumbers, prolongs the breeding cycle, and causes a lot of time and loss of income for artificial breeding.