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Analyzing method of fish sexual gland

A determination method and a gonad technology are applied in the field of parental cultivation to achieve the effects of good economic benefit, increased ratio and improved detection efficiency

Inactive Publication Date: 2005-03-30
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a fish gonad assay method that does not damage the parent fish body and does not have any influence on the gonad development of fish

Method used

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  • Analyzing method of fish sexual gland
  • Analyzing method of fish sexual gland
  • Analyzing method of fish sexual gland

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Embodiment Construction

[0008] The best way to implement the present invention is to put the fish to be checked into an electric anesthesia tank, see figure 1 : A mesh electrode 2 is inserted at both ends of the electric anesthesia tank 1, and the two mesh electrodes are respectively connected to the positive and negative poles of the DC power supply 3, and the voltage is adjusted to 25-30V according to the individual size of the fish, and the electric field strength is 0.4-0.5Vcm -1 , the current was kept at 0.1-0.2A, and electric anesthesia was performed on the fish; then a fish endoscope with a visual direction angle of 90°, a field of view angle of 80° and a sealed glass tube was inserted from the fish genital opening. The tissues on both sides of the fallopian tube / vas deferens to the ovary / testis are dynamically monitored, and the measurement data are measured, and then the male and female are identified according to the gonad development index parameters in different development stages of fish ...

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Abstract

The invention relates to a fish gonad determination method. Said method includes the following steps: placing the fish to be examined into an electric anesthetization tank, adopting 25-30 V low-voltage dierct current to apply said direct current to fish the make electric anesthetization, then using an endoscope specially-design for fish and inserting it into genital operature and making dynamic determination from uterine tube / deferent duct to two sides or ovary / testis to obtain determinal data, then utilizing the gonadal development index parameters of different development stages of fish and determined gondal development condition to make male and female identification.

Description

Technical field: [0001] The invention relates to a monitoring process for parental breeding in the field of fish reproductive biology, especially a monitoring method for gonad development. Background technique [0002] Fish gonad development monitoring is an important technical support for parental breeding. It is the basis for adjusting the breeding method and the ratio of male and female parents, and directly affects the cost of parental breeding. However, there is no suitable method to identify the male and female of fish gonads. Only a few fish can distinguish male and female by appearance. Most fish only appear secondary sexual characteristics during the breeding period, and can distinguish male and female by appearance. Many large and valuable Because the secondary sexual characteristics of fish are not obvious, it is impossible to distinguish between male and female by appearance, and sometimes too many male parents are bred, resulting in economic losses. In order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/12G01N33/76
Inventor 庄平章龙珍张涛黄晓荣冯广朋
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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