Method for breeding high-quality pearl young shellfishes

Abstract

The invention provides a method for propagating high-quality pearl young shellfishes. The method comprises the following steps of 1, spawning induction and fertilization, wherein parent shellfishes are taken out and contained in cages with male shellfishes and female shellfishes separated, the parent shellfishes are placed in treatment seawater containing ammonium hydroxide, the parent shellfishesare taken out to be dried in the shade 1 hour later, a spawning induction pond is filled with the treatment seawater, tetraselmis is put into the spawning induction pond, then the parent shellfishesare placed in the spawning induction pond, the male shellfishes and the female shellfishes are contained in different cages, atmosphere oxygenating is carried out until the water surface is boiled, the parent shellfishes are removed 1 hour later, the spawning induction pond is thoroughly washed, the parent shellfishes are transferred into a fertilization pond half an hour later, and the parent shellfishes are removed 4 hours later; 2, larva management; 3, water quality management, wherein the water is replaced once every three days, and the water replacement amount is 1/10 of the volume. Whenthe method is used for propagating the high-quality pearl young shellfishes, the water replacement amount is small, the water quality is stable, the death rate at the stage that the larvae are transformed into the young shellfishes is low, the yield is high, and the labor cost and the electricity cost are low.

Description

technical field [0001] The invention relates to a method for breeding high-quality pearl seedlings. Background technique [0002] At present, when pearl seedlings are bred, the amount of water exchanged is very large, resulting in unstable water quality, high mortality in the metamorphosis and seedling stage of larvae, low yield, high labor costs and high electricity costs. Contents of the invention [0003] In order to solve the problems existing in the prior art, the invention provides a method for breeding high-quality pearl seedlings with low cost and high survival rate. [0004] The invention provides a method for breeding high-quality pearl seedlings, comprising the following steps: [0005] 1. Oxygenated fertilization [0006] (1) When the water temperature reaches 23-25°C and the air temperature reaches 19-21°C, take out the parent shellfish and prepare for induced labor, wherein the ratio of male shellfish to female shellfish is 1:3.6-3.8; [0007] (2) After cl...

AI Technical Summary

Problems solved by technology

[0002] At present, when pearl seedlings are bred, the amount of water changes is very large, resulting in unstable water quality, high mortality in the stage of larva metamorphosis, low yield, high labor costs and high electricity costs.