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Freshwater prawn transvaalensis method

A hybrid method and artificial technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of species degradation, reduction of breeding benefits, threats to the development of freshwater shrimp farming, etc., and achieve the goal of promoting health and improving economic benefits Effect

Inactive Publication Date: 2003-12-31
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

[0006] Most of the freshwater economic shrimps in my country belong to Macrobrachium, such as green prawn, Macrobrachium rosenbergii, Macrobrachium hainanensis, etc. In recent years, with the rapid development of the aquaculture industry, the production scale and aquaculture output have increased sharply, and the degree of intensification has continued to increase. The species of freshwater cultured shrimp such as freshwater shrimp has been seriously degraded, and the breeding efficiency has dropped sharply, which seriously threatens the development of freshwater shrimp farming industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] The female broodstock is freshwater shrimp, with a body length of 5.5-7cm. The back of the head is full of gonads, and the color is green. The male broodstock is Macrobrachium hainanensis, with a body length of 5-7cm. White gonad clusters can be seen on both sides of the head;

[0022] The dose of LH-RH-A aphrodisiac is 60ppm, the water temperature is controlled at 22-29°C, after 7 days, the female shrimp will molt;

[0023] About 6 hours after the reproductive molt of the female shrimp, the sperm pod transplantation is completed and put back into the water for rearing;

[0024] At a water temperature of 26-27°C, 45 hours after sperm pod transplantation, female shrimp lay eggs and hold eggs;

[0025] The egg-bearing female shrimps are hatched at a water temperature of 22-29°C, and about 500 hybrid shrimps hatch after 13 days.

example 2

[0027] The female broodstock is freshwater shrimp, with a body length of 5.5-7cm. The back of the head is full of gonads, and the color is green. The male broodstock is Macrobrachium hainanensis, with a body length of 5-7cm. White gonad clusters can be seen on both sides of the head;

[0028] The dose of LH-RH-A aphrodisiac is 40ppm, and the water temperature is controlled at 22-29°C. After 10 days, the female shrimp will molt;

[0029] About 8 hours after the reproductive molt of the female shrimp, the sperm pod transplantation is completed and put back into the water for rearing;

[0030] At a water temperature of 27-29°C, 36 hours after sperm pod transplantation, female shrimp lay eggs and hold eggs;

[0031] The egg-bearing female shrimps are hatched at a water temperature of 22-29°C, and about 1,200 hybrid shrimps hatch after 15 days.

example 3

[0033] The female broodstock is freshwater shrimp, with a body length of 6-7.5cm, and the back of the head is full of gonads, and the color is green. The male broodstock is Macrobrachium hainanensis, with a body length of 6-7cm, and white gonad clusters can be seen on both sides of the head;

[0034] The dose of LH-RH-A aphrodisiac is 80ppm, and the water temperature is controlled at 22-29℃. After 5 days, the female shrimp will molt;

[0035] The sperm pod transplantation is completed about 5 hours after the reproductive molt of the female shrimp, and it is put back into the water for rearing;

[0036] At 27-28°C water temperature, 28 hours after sperm pod transplantation, female shrimp lay eggs and hold eggs;

[0037] The egg-bearing female shrimps were hatched at a water temperature of 22-29°C. After 10 days, about 2,300 hybrid shrimps hatched. The first generation of hybrids has grown to adults, and its shape is between the parents. Analysis of isozyme electrophoresis shows...

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Abstract

The artificial crossbreeding process of pond caray features the paired culture of female and male parent caray of different varieties, promoting estrus by artificial means, taking out the sperm atophore of male caray and attaching it to between the fourth and the fifth walking legs of female caray, alone culturing of the female caray to complete spawning and hatching and to obtain hybrid caray fry. The present invention provides one feasible way for breeding hybrid pond caray and it expects to breed excellent new variety of shrimp.

Description

technical field [0001] The invention relates to shrimp breeding technology, more precisely a method for interspecies hybridization of giant macrobrachium by sperm pod transplantation. Background technique [0002] Hybridization has made great achievements in plant breeding. The promotion of hybrid rice has greatly increased the world's grain production; hybridization has also achieved remarkable results in the field of aquatic products. Chinese scientists have bred excellent hybrid carp such as Heyuan carp, Feng carp and Yue carp. It has been promoted on a large scale, which has greatly increased the yield per mu of carp; the Kursk carp bred by scientists in the former Soviet Union through the hybridization method has strong cold resistance, and has pushed the carp breeding area northward by 6 latitudes. [0003] The fertilized eggs of fish develop in vitro and do not depend on the mother body at all. During artificial insemination, it is only necessary to squeeze out mature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A01K67/033
CPCY02A40/81
Inventor 傅洪拓龚永生吴滟徐跑
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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