Urechis unicinctus fry breeding method

Abstract

The invention discloses an urechis unicinctus fry breeding method. The method comprises the following steps: 1, preparing urechis unicinctus fry; 2, transporting the urechis unicinctus fry; 3, insemination; 4, splashing fertilized eggs into a hatching pond for hatching; 5, breeding planktonic larvae; 6, when the larvae grow to the later period of body section larvae, namely 10-12 body sections of the larvae grow, the larvae are moved into a young urechis rearing pond, meanwhile, the larvae are fed with rhodotorula benthica, and after the larvae enter sea mud and are metamorphosed into wormlike larvae from the body section larvae, the larvae are dragged through a bolting-silk net or collected through drainage; and 7, the young urechis unicinctus is bred for 30-40 days and taken out of the pond when the body length is 5 + / -1 mm. According to the method, rhodotorula benthica is used as bait, digestion of larvae is facilitated, growth is promoted, and manpower and material resources for building a bait culture room and bait culture are omitted; and sea mud is used as a substratum, production management is facilitated, the metamorphosis survival rate of an important link of larva growth can be effectively increased, and the metamorphosis survival rate in the prior art is increased to 70%-75% from 10% of the metamorphosis survival rate in the original art.

Description

technical field [0001] The invention relates to the field of seedling cultivation of aquatic animals, in particular to a method for cultivating seedlings of the single-ringed weed. Background technique [0002] Single-ringed spinyweed, common name: sea intestine, sea intestine, belongs to the phylum Cycarididae, class Cicteridae, order Cicteraceae, family Cicadaceae, and genus Cicadae. Distributed in Russia, Japan, North Korea and my country's Bohai Bay, etc., it is a common species of benthic organisms in the intertidal subtidal zone and subtidal shallow water zone of the northern coastal sandy shore. [0003] Echinococcus monoringensis is large and delicious, and its body wall muscle is rich in protein and various essential amino acids. As a rare seafood product, it has high economic value. [0004] However, it is difficult to cultivate single-ringed weed seedlings, which requires a lot of manpower. In addition, the existing technology uses sand beds as the habitat substr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low survival rate of weeder seedlings in the prior art, excessive manpower consumption and inconvenient sand bed management, etc., and propose a single-ringed weeder seedling cultivation method that can save manpower and effectively improve the survival rate