Method and device suitable for rapid spawning of buried benthic bivalve mollusc

Abstract

The invention discloses a method and device suitable for rapid spawning of buried benthic bivalve mollusc. Firstly, buried benthic bivalve mollusc achieving mature specification is selected as parentshellfish and placed in a spawning device into a culture pond; the thickness of the buried benthic bivalve mollusc gonad is measured, drying in the shade is carried out on the buried benthic bivalve mollusk parent shellfish achieving gonadal maturation, and then the buried benthic bivalve mollusk parent shellfish is transferred to a spawning pond; the buried benthic bivalve mollusk parent shellfish is inflated, and the parent shellfish begins to spawn until the required zygote. The spawning device comprises a cuboid frame body, the four edges of the bottom of the frame body are composed of tubular structures, the tubular structures are provided with air inflation holes and further connected with air inflation pipelines, and the upper portion of the frame body is provided with an open bracket body; the device further comprises a spawning frame, wherein the periphery of the spawning frame except the top is provided with purse nets. The method and device suitable for rapid spawning of theburied benthic bivalve mollusc have the advantages that the parent shellfish is induced by utilizing inflation, the cost is lower, the operation is convenient, the harm to the parent shellfish is little, the spawning speed is quick, the quality of ova is good, and the hatching rate is high.

Description

technical field [0001] The invention relates to a method for spawning bivalve molluscs, in particular to a method and device for rapid spawning of bivalve molluscs suitable for brooding, and belongs to the field of aquaculture. Background technique [0002] At present, there are many kinds of buried shellfish in my country (such as Meretrix meretrix, Philippine clam, mud clam, giant razor clam, green clam, Xishi tongue, constricted clam, Bafei clam, etc.), and the output is the largest. The supply of cultured seed mainly depends on earthen pond breeding and wild seedlings, and are greatly affected by weather and climate, and there are many uncertain factors in the supply of seedlings. However, the production level of indoor artificial seedlings is generally low, and it is difficult to lay eggs indoors, low emergence rate and high production costs. Among them, the indoor ripening cultivation and spawning of buried shellfish broodstock are technical bottlenecks. So far, there is...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many kinds of buried shellfish in my country (such as Meretrix meretrix, Philippine clam, mud clam, giant razor clam, green clam, Xishi tongue, constricted clam, Bafei clam, etc.), and the output is the largest. The supply of cultured seed mainly depends on earthen pond breeding and wild seedlings, and are greatly affected by weather and climate, and there are many uncertain factors in the supply of seedlings. However, the production level of indoor artificial seedlings is generally low, and it is difficult to lay eggs indoors, low emergence rate and high production costs. Among them, the indoor ripening cultivation and spawning of buried shellfish broodstock are technical bottlenecks, and there is no spawning technology system for buried shellfish broodstock that can be artificially adjusted at any time

[0003] At present, the spawning methods of buried shellfish broodstock are mainly drying in the shade, heating stimulation, ammonia seawater immersion and injection spawning method, among which drying in the shade, heating stimulation method, the spawning quality is good but the spawning effect is not obvious, ammonia seawater injection and immersion method, the induction effect is good but the egg quality is poor, and the hatching rate is low, it is not easy to cultivate, so it is impossible to obtain a large number of high-quality fertilized eggs required for artificial breeding, and it is impossible to carry out large-scale artificial breeding and breeding

Images