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Breeding method of clam fast growth strain

A clam, fast technology, applied in fish farming, application, climate change adaptation, etc., to achieve the effect of large individuals, strong resistance, and increased growth rate

Active Publication Date: 2010-12-29
ZHEJIANG WANLI UNIV
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Problems solved by technology

But so far, there is no report on the cultivation of fast-growing new species (lines) by hybridization and heterosis utilizing the phenotypic traits and genetic background differences of different geographical populations of clams.

Method used

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  • Breeding method of clam fast growth strain
  • Breeding method of clam fast growth strain
  • Breeding method of clam fast growth strain

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specific Embodiment approach

[0024] (1) Breeding and induced production of broodstock

[0025] On May 10, 2006, clams were collected from Dongying, Shandong and Rudong, Jiangsu, which are called Shandong population (S) and Jiangsu population (J), respectively. Healthy, disease-free, and shiny shells were selected. 100 clams of 3-4 years old with a height of 4-7 cm are used as broodstock. Place broilers in a cement pool covered with fine sand of about 10 cm, and promote ripening by gradually heating up and feeding sufficient live bait to strengthen nutrition. The specific heating method is to start with the water temperature before the temperature rise, and then increase the temperature by 0.5°C every other day, and keep it constant when the water temperature reaches 26°C, so as to regulate the synchronous development of the gonads. The bait is mainly fed with a sufficient amount of mixed bait such as golden algae, flat algae, chaetoceros, etc., to ensure sufficient and comprehensive nutrition. The metho...

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Abstract

The invention provides a breeding method of a clam fast growth strain, which is mainly applied to a seed producing strategy of the selective breeding of the hybrid combination of the clams with different geographical colonies. The method comprises the following steps of: hybridizing the Shandong female clam and the Jiangsu male clam to obtain a first filial generation colony which has the advantages of fast growth and good hybridization; taking the individual with fast growth speed in the first filial generation as a basic colony to perform the selective breeding of phenotypic continuous multi-generation; and breeding the clam fast growth strain. The breeding method is simple in operation, is suitable for scale production, improves the growth speed by more than 20% compared with the common produced clam, and has the great significance for improving the yield of the clam production.

Description

technical field [0001] The invention relates to a seed production technology of marine cultured shellfish. Specifically, it uses the phenotype and genetic differences between different geographical populations of clams to improve the genetic diversity of the populations through hybridization, and obtain clams with a faster growth rate in aquaculture production. new strain. Background technique [0002] Hybrid breeding is an effective method for genetic improvement and new variety breeding. It can not only combine the excellent traits of the parents, increase the variability, but also produce heterosis beyond the parents. In terms of shellfish, there have been many successful precedents of interspecific hybridization, such as the hybrid of Haliotis discus hannai and Japanese discus (Haliotis discus discus) obtained by Yan Jingping (1999) of the Yellow Sea Fisheries Research Institute. The offspring showed obvious heterosis in terms of survival rate and growth rate; Sun Chang...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 林志华董迎辉柴雪良肖国强刘保忠张炯明
Owner ZHEJIANG WANLI UNIV
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