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Technique for masculinizing large groupers by surgical implanting

A grouper and masculinization technology, applied in fish farming, climate change adaptation, medical science and other directions, can solve the problem of difficulty in obtaining large grouper male individuals, and achieve simple and reliable surgery, high masculinization rate, and medicine. Dose-controllable effect

Inactive Publication Date: 2015-01-21
FISHERIES RES INST OF FUJIAN
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, grouper is a hermaphroditic protogyn species, small grouper is easy to achieve masculinization and a large number of male individuals can appear in the group, while large grouper male individuals are not easy to obtain

Method used

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Experimental program
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Embodiment Construction

[0008] Large-scale grouper surgical implant type masculinization technology of the present invention, its steps are:

[0009] 1. Production of hormone drug strips: Take two 100ml beakers, add 18ml of distilled water with a pipette, add 2g of gelatin particles into one beaker, and add 2g of gum arabic particles into the other beaker, and heat them with alcohol lamps to dissolve them. Gently stir with a glass rod to heat and dissolve evenly to make 10% gelatin solution and 10% gum arabic solution. Take another 50ml beaker, add 10g of hormone powder (17α-Methyltestosterone, 17α-methyltestosterone, purity ≥ 97%, imported from the United States) and a drop of vegetable oil, when the gelatin and gum arabic are cooled to near normal temperature, use a pipette to take 2.5 Add ml 10% gelatin aqueous solution and 2.5ml 10% gum arabic aqueous solution to the beaker where the hormone has been placed, stir it with a glass rod to make it even into a paste, and then transfer the drug group i...

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Abstract

The invention relates to a technique for masculinizing large groupers by surgical implanting. According to the technique, individual large groupers more than four years old are selected, manually prepared hormone sticks containing 17Alpha-methyltestosterone are implanted into dorsal muscles of the selected groupers in a surgical manner 6 months before a natural propagation season so as to masculinize the individual large groupers, the individual large groupers mature on the propagation season and become male parent fishes required by artificial grouper propagation. The technique has the advantages that by surgically implanting the hormone sticks, the large groupers can be masculinized at a higher rate up to 100%, with no re-feminization occurring; dosage of the surgically implanted hormone sticks is easy to control, implants act for a lifetime after being implanted, no enhanced supplementary implanting is required, the surgery is simple and reliable, and little injury is caused; the hormone sticks are simple to make, controlling is easy, no contamination occurs, and the hormone sticks made can be stored for a long period of time.

Description

technical field [0001] The invention relates to a surgically implanted masculinization technology for large grouper. Background technique [0002] Grouper is the species with the highest economic value in marine fish. Among the more than 100 species of grouper in the world, according to their adult size, they can be divided into two categories: large and small. Small grouper is our common small grouper such as red spot grouper (red spot) and blue grouper (earth spot). Its external characteristics are that the individual is small, and the largest known individual is generally 1-2kg Below; growth is slow, and the maximum individual weight generally does not exceed 1kg from the second anniversary of artificial breeding of fish species. There are many types of large grouper, the common economic species are oblique band grouper, moire grouper, brown grouper, gentian grouper, etc. The individuals are all relatively large, and the largest known individual can generally reach ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A61D19/00
CPCY02A40/81A01K61/00A61D19/00
Inventor 曾庆民
Owner FISHERIES RES INST OF FUJIAN
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