Artificial ripening cultivation method for Parent snail of Hemifusus tuba Gmelin

Abstract

The present invention relates to a method for artificially ripening parent snail of Hemifusus tuba Gmelin. The aim of the invention is to provide a parent snail cultivation method which causes the Hemifusus tuba Gmelin to ripen and spawn beforehand and increases the individual reproductive capacity. According to the method, the healthy and sexual mature Hemifusus tuba Gmelin is selected and is transferred to indoor cement pit for executing artificial strengthening ripening cultivation. The water temperature and illumination are respectively controlled in the range of 26-28 DEG C and 310-5300 LX in daily management. The baits of shellfish meat, crab meat, etc. which have comprehensive nutrition are fed. The method of the invention basically satisfies the environmental conditions (temperature and illumination) and nutrition requirement for developing the gonad of Hemifusus tuba Gmelin to mature. The Hemifusus tuba Gmelin ripens and spawns before those of other cultivation method for 25-30 days. Furthermore the spawning time is more consistent and the Hemifusus tuba Gmelin can spawn repeatedly for a plurality of times thereby increasing the individual reproductive capacity of Hemifusus tuba Gmelin and settling the problem of fingerling shortage in the large-scale cultivation of Hemifusus tuba Gmelin. The method of the invention is suitable for the parent cultivation in the artificial propagation of Hemifusus tuba Gmelin.

Description

technical field [0001] The invention belongs to the fields of agriculture, forestry, animal husbandry and fishery, and relates to an artificially enhanced maturation-promoting cultivation method for broodstock in shellfish artificial propagation, in particular to a method for artificially enhancing maturation-promoting cultivation of parent snails. Background technique [0002] For many aquatic economic animals, in the process of gonad development, maturation and reproduction, nutrition plays a decisive role in the growth and development speed of reproductive cells, and light and water temperature are also necessary external conditions for aquatic economic animals to complete their reproductive activities. Only natural The gonads mature and reproduce when the effective accumulated temperature in the environment reaches a certain level. For example, silver carp growing in different regions of my country, although the age of sexual maturity varies from region to region, the to...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to make up for the deficiencies in the above-mentioned prior art, aiming at the problems that the breeding time of picornis snails is greatly affected by environmental factors (temperature, light) and the individual reproductive ability is low, to provide an efficient, simple, and can promote An artificial maturation-promoting cultivation method for snails that mature and lay eggs in advance and the spawning time is relatively consistent, and can improve individual fecundity at the same time