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Cross-breeding method for improving high temperature tolerance of Ezo scallop

A technology of Ezo scallop and high temperature tolerance, which is applied in the fields of application, climate change adaptation, fish farming, etc., to achieve the effects of fast development, high fertilization rate, and fast growth

Active Publication Date: 2018-11-16
DALIAN OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there is no related report on the distant hybrid breeding of Ezo scallop and long ribbed clam

Method used

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Embodiment Construction

[0021] The present invention improves the crossbreeding method of Ezo scallop high temperature tolerance, carries out according to the following steps:

[0022] a. Select the long-ribbed sun moon clam and Ezo scallop female as hybrid broodstock:

[0023] In mid-March, when the seawater in the sea area where the scallop grows rises to 24-25°C, select the sea shell that is more than 2 years old as the hybrid brood; when the seawater where the scallop grows rises to 2-3°C, Female scallop shellfish over 2 years old were selected as hybrid broodstock.

[0024] b. Artificial breeding to mature the gonads of hybrid broodstock at the same time:

[0025] After washing and disinfecting the hybrid broodstock, put them into different cultivation pools for cultivation, and the cultivation density is 10~15 / m 3 Water body, feed the mixed algae of Chrysophylla and Nitzschia Crescent and the fermented liquid of yeast powder and sargassum powder once in the morning and evening, and the daily ...

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Abstract

The invention discloses a crossbreeding method capable of improving the high-temperature tolerance of patinopecten yesoensis. Female patinopecten yesoensis and amusium pleuronectes are used as parent scallops, and insemination is carried out at a water temperature of 18-19 DEG C, wherein the fertilization rate of sperm and egg cell is high, the embryo and larvae develop quickly, the time of developing into D-shaped larvae and juveniles is remarkably shortened, hybrid scallop seedlings with fast growth and strong stress resistance can be provided, the ability of final scallop and offspring hybrid scallop adapting to a high-temperature environment is enhanced, the death does not occur when the sea water temperature reaches 26 DEG C, and the farming range of patinopecten yesoensis can be expanded.

Description

technical field [0001] The invention relates to the field of marine shellfish genetics and breeding, in particular to a hybrid breeding method for improving high temperature tolerance of Ezo scallop. Background technique [0002] Ezo scallops ( Pationopecten yessoensis ) is large and grows fast, and is the main economic shellfish cultured along the northern coast of my country. In the 1980s, it was successfully introduced into China from Japan and realized artificial propagation technology. However, since the Ezo scallop is native to Hokkaido, Japan, its living water temperature does not exceed 23°C. If the water temperature in artificial culture reaches 23°C, it will die on a large scale, causing huge economic losses to the farmers. Because of this, shrimp Yi scallops are currently only cultured in coastal areas such as Changhai, Dalian, Liaoning. [0003] Long rib sun and moon shellfish ( Amusium pleuronectes ) belongs to Bivalvia (Bivalvia), Pearl Oyster (Pterioida),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/54
CPCY02A40/81
Inventor 常亚青宁军号张伟杰湛垚垚宋坚
Owner DALIAN OCEAN UNIV
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