Method for promoting common shrimp ovary maturity and spawning

An ovary and maturation technology, applied in the field of shrimp farming, can solve the problems of decreased egg quality, lower hatching rate, and high mortality rate of broodstock shrimp, achieve high egg fertilization rate and hatching rate, shorten ovary maturation time, and reduce broodstock mortality rate low effect

Inactive Publication Date: 2006-07-26
XIAMEN UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Previous studies have shown that although eye-stalk extraction stimulates the rapid development of shrimp ovaries, the mortality rate of broodstock is high, the quality of eggs produced is reduced, and the hatching rate is also reduced, so it is not an ideal means to regulate reproductive performance (Vaca A, Alfaro J. Ovarian maturation and spawning in the white shrimp, Penaeus vannamei, by serotonin injection. Aquaculture, 2000, 182: 373-385)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Prepare 5-HT solution with 1 mg of 5-HT powder and 5 mL of sterilized seawater. According to the body weight of broodstock shrimp, inject 3 times of 5-HT solution at a dose of 2-5 μg / g body weight to each broodstock shrimp in stage I of ovarian development. The interval is 5 days.

Embodiment 2

[0012] Use 1 mg of 5-hydroxytryptamine powder and 4 mL of sterilized seawater to prepare a 5-hydroxytryptamine solution. According to the body weight of the parent shrimp, inject 3 times of 30-35 μg / g body weight of the 5-hydroxytryptamine solution to each parent shrimp in the stage I of ovarian development. The interval is 5 days.

Embodiment 3

[0014] Use 1 mg of 5-hydroxytryptamine powder and 2 mL of sterilized seawater to prepare a 5-hydroxytryptamine solution. According to the body weight of the parent shrimp, inject 2 times of 5-hydroxytryptamine solution at a dose of 50-55 μg / g body weight to each parent shrimp in the stage I of ovarian development. The interval is 7 days.

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Abstract

A method for promoting ovary maturity and oviposition for Japanese prawn, relating to a method for breeding prawn, in particular to a method employing exo-genetic hormone. It comprises following steps: preparing 5-hydroxytryptamine solution, employing sterilized sea water as dissolvent, with the content ratio of them being: 1 mg:1-5ml, injecting every prawn at least one time with dose being 2-60 2~60mug/g of the 5-hydroxytryptamine according to parent prawn's weight, injecting 1-3 times for every prawn with time interval being 5-10 days. It is unnecessary to extract eyestalk, and no damage to reproductive endocrinology organ, and thus the invention is characterized by short ovary mature time, low prawn mortality, high fertility and hatchability rate, easy to operate and low cost, and etc.

Description

technical field [0001] The invention relates to a method for cultivating shrimps, in particular to a method for promoting ovary maturation and oviposition of Japanese prawns (Marsupenaeus japonicus) by using exogenous hormones. Background technique [0002] Japanese prawns are large in size, delicious in taste and bright in color, and are excellent breeding varieties. Penaeus japonicus has the characteristics of maturation and spawning in deep sea areas, and it is generally difficult to obtain large quantities of mature broodstock for seedling cultivation, thus limiting the development of aquaculture production. In the artificial breeding industry, sea-caught Penaeus japonicus with undeveloped ovaries is often cultivated to stage I-III, and then the eye-stalk removal method is used to promote the maturation of broodstock, so as to obtain batches of mature shrimp for productive breeding (Lin Qiongwu, Huang Jiaqi, Zhou Wenli. Studies on multiple maturation of broodstock gonad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A61D19/00
CPCY02A40/81
Inventor 叶海辉林琼武
Owner XIAMEN UNIV
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