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Black shrimp intraspecific hybridization method

A hybrid breeding and green shrimp technology, applied in the field of hybrid technology, can solve problems such as affecting the utilization of heterosis, and achieve the effects of saving seedling cost, increasing commodity rate and reducing seedling cost.

Inactive Publication Date: 2008-10-22
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the traditional method of intraspecific hybridization in freshwater shrimp has more seriously affected the utilization of heterosis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Hybrid Breeding Method of Taihu Green Shrimp (Female) and Pearl River Green Shrimp (Male)

[0027] Through comprehensive analysis of genetics, economic traits, and nutritional quality, two excellent local populations of Taihu green shrimp and Pearl River green shrimp were found.

[0028] The above-mentioned two kinds of excellent shrimp species are enlarged by artificial breeding and cultured in special ponds respectively; from late April to early June, shrimp cages are placed in the breeding ponds for fishing. The mesh of the shrimp cages is set to 2.5 cm, supplemented by artificial Select and remove a small amount of remaining female shrimp in the shrimp cage to obtain a batch of male shrimp; from the first ten days of May to the first ten days of June, sort out the egg-bearing female shrimp in batches from the breeding pond, and then use the method recorded in the Chinese patent application with the application number 200610111326.7 Egg-bearing female shrimp is effic...

Embodiment 2

[0031] Hybrid Breeding Method of Pearl River Green Shrimp (Female) and Taihu Lake Green Shrimp (Male)

[0032] Through comprehensive analysis of genetics, economic traits, and nutritional quality, two excellent local populations of Taihu green shrimp and Pearl River green shrimp were found. The population expansion and sorting methods are basically the same as in Example 1. When the males and females are crossed, the ratio of males to females is 1 male: 4 females. Then carry out artificial propagation of freshwater shrimp and shrimp seedling cultivation according to conventional method, obtain the high-quality shrimp seedling of the present invention.

[0033] The hybridization experiment of Pearl River green shrimp (female) x Taihu Lake green shrimp (male) showed that the batch sorting technology of males and females was practical and effective, which could meet the needs of large-scale production, and the breeding ratio of 1 male: 4 females could save 75% of male parents. B...

Embodiment 3

[0035] Hybrid Breeding Method of Taihu Green Shrimp (Female) and Oujiang Green Shrimp (Male)

[0036] Through the comprehensive analysis of genetics, economic traits, and nutritional quality, two excellent local populations of Taihu green shrimp and Oujiang green shrimp were found. The population expansion and sorting methods are basically the same as in Example 1. When the males and females are cross-breeding, the ratio of males to females is 1 male: 5 females. Then carry out artificial propagation of freshwater shrimp and shrimp seedling cultivation according to conventional method, obtain the high-quality shrimp seedling of the present invention.

[0037] The hybridization experiment of Taihu freshwater shrimp (female) x Oujiang freshwater shrimp (male) showed that the batch sorting technology of male and female is practical and effective, which can meet the needs of large-scale production, and the mating ratio of 1 male:5 females can save 80% of male parents. Breeding com...

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Abstract

The invention provides a breeding method of intraspecific hybridization of black shrimp, comprising the steps of collecting and separately cultivating excellent local population, selecting female shrimps and male shrimps with sexual maturity and cross mating with excellent seed shrimps in different places. The breeding method of the invention has the remarkable advantages in the hybrid rate and the economical rate of male parent, etc; compared with the existing shrimp larvae, the shrimp larvae cultivated by the breeding method of the invention has remarkable progress in such aspects as growth rate, ability of resisting diseases and inverse and delaying sexual maturity, etc, fully shows the heterosis, and improves the commodity rate, individual specification and economic benefit of shrimp cultivation.

Description

technical field [0001] The invention relates to genetic breeding of shrimps, in particular to the technology of hybridization (namely intraspecific hybridization) between different local populations of the same shrimp. Background technique [0002] Green shrimp (Macrobrachium nipponense), scientific name Macrobrachium nipponense, is an important freshwater cultured shrimp in my country. At present, the annual output of freshwater shrimp farming in my country is more than 200,000 tons, and it is still increasing year by year. However, with the continuous expansion of the breeding scale and the continuous improvement of the degree of intensification, the freshwater shrimp has serious species degeneration, early sexual maturity, smaller individuals, lower listing rate, more diseases, and lower breeding benefits year by year. Variety degeneration has become the bottleneck of the freshwater shrimp aquaculture industry, seriously restricting the development of the freshwater shri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 傅洪拓龚永生吴滟熊贻伟何新龙徐跑戈贤平
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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