Artificial breeding method of Spisula sachalinensis (Schrenck)

A technology of artificial breeding and clams, applied in fish farming, application, climate change adaptation and other directions, can solve the problem of not solving the key methods such as the intermediate cultivation of juvenile attachment metamorphosis juveniles, the establishment of a large-scale artificial fry production system, and the realization of Problems such as artificial culture of Sakhalin thick clams

Inactive Publication Date: 2014-12-17
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Basically, we have figured out the reproductive habits, growth habits and embryonic development characteristics of Sakhalin Island thick clams, and mastered the methods of artificial breeding to induce spawning, but we have not solved the key methods such as larva attachment metamorphosis and juvenile shell cultivation, and have not established a complete system. The large-scale artificial seed production system has not realized the complete artificial breeding of thick clams in Sakhalin Island

Method used

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Embodiment Construction

[0009] The artificial breeding method of thick clams from Sakhalin Island of the present invention is characterized in that when the water temperature in the natural sea area is below 12°C in spring, individuals with a shell length of 8 to 12 cm are collected from the natural environment as parents; the parents are placed in indoor water bodies Raise the temperature to promote ripening, feed with spirulina powder, egg yolk, starch and unicellular algae bait, and cultivate at a constant temperature when the temperature is raised to 23.5-24.5°C; chemically stimulate the parents to release fertilized eggs, and the fertilized eggs hatch to D-shaped after 22-24 hours Larvae; use a 300-320 mesh sieve to move the D-shaped larvae to 10-15m 3 Cultivate in a pool, the water for cultivation is filtered through secondary sand, the salinity is 28-32, the water temperature is 24-26°C, the density of larvae is 0.5-1 / ml, and the daily water change is 1 / 3-1 / 2 of the water for cultivation. The ...

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Abstract

The invention discloses an artificial breeding method of Spisula sachalinensis (Schrenck), which is characterized by comprising the following steps: fishing and catching individuals as parents from a natural environment when the water temperature in a natural sea area is below 12 DEG C in spring; placing the parents in an indoor water body for warming and ripening, feeding the parents with spirulina powder, egg yolk, starch and unicellular algae baits, and breeding at a constant temperature; stimulating the parents to discharge ova and sperms by a chemical method, and incubating oosperms into D-shaped larvas; transferring the D-shaped larvas into a pond for breeding by a silk net, wherein the larva breeding density is 0.5-1 larva / ml, and the D-shaped larvas are fed with Isochrysis zhanjiangensis at the early stage, and are fed with the Isochrysis zhanjiangensis and Tetraselmis at the later stage; collecting and transferring the larvas to another pond for breeding when the shell of the larva grows to 280-300 mu m and feet grows out, and enabling the larvas to finish settlement and metamorphosis at the bottom of the pond by adopting an adherence-free collection technology; and transferring juvenile mollusks to the outdoor for intermediate breeding when the shell of the mollusk grows to 1.5-2mm. By the artificial breeding method of the invention, artificial seedlings of Spisula sachalinensis (Schrenck) can be bred in a large scale.

Description

technical field [0001] The invention relates to an artificial breeding method of shellfish, in particular to an artificial breeding method of thick clam from Sakhalin Island. Background technique [0002] Sakhalin thick clam (Pseudocardium sachalinense), commonly known as arctic shellfish, belongs to the clambranch class, heterodentate subclass, clam order, clam family, is a cold-water shellfish distributed in the northern coast of Japan, Sakhalin Island, and the east coast of the Korean Peninsula. kind. Adult shellfish mainly live in the subtidal zone to 12m deep sand bottom and shallow sea area, and are the most important tidal flat economic shellfish in the northeast of Japan and the coastal areas of Hokkaido. In 2002, the total output value of Hokkaido, Japan reached 55 million US dollars. Thick clams from Sakhalin Island have thick shells and are heart-shaped. They are large in size. The adult shell length is 9-10cm, the shell height is 7-8cm, and the shell width is 4...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 李琪王庆志孔宁
Owner OCEAN UNIV OF CHINA
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