Completely-artificial hemibagrus wyckioides reproduction method

A technology of artificial breeding and silktail, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems of high cost and large artificial labor, and achieve the effect of small number, small number of use, and avoidance of inbreeding

Active Publication Date: 2015-11-11
云南省渔业科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of high cost and large artificial labor caused by the need to directly kill wild broodstock in the prior art, the present invention provides a method for obtaining the F2 generation fry of I. chinensis through full artificial propagation. The method has the function of protecting the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A. The F1 generation population obtained by breeding from wild parents is cultivated to 15-20 cm through seedlings, and individuals with obvious growth rate advantages are selected as backup broodstock, and the number of backup broodstock is recorded. Individuals with fast growth rate and obvious leaf silk on the tail, and the ratio of male and female selection is 1:2 (due to the loss of male fish due to the need to dissect the testes of male fish, so choose female fish), and feed the selected individuals with fish blocks (Carp, tilapia fillets) are cultivated and used as artificial broodstock after reaching the age of 3+;

[0015] B, in the artificial broodstock of step A, select the individual from different wild parental combinations as the male and female broodstock of artificial breeding;

[0016] C. When the water temperature is 25°C, inject oxytocin to the female broodstock in step B: the first injection of LRH-A 23 μg / kg, after an interval of 12 hours, the secon...

Embodiment 2

[0019] A. The F1 generation population obtained by breeding from wild parents is cultivated to 15-20 cm through seedlings, and individuals with obvious growth rate advantages are selected as backup broodstock, and the number of backup broodstock is recorded. Individuals with fast growth rate and obvious leaf silk on the tail, and the ratio of male and female selection is 1:2 (due to the loss of male fish due to the need to dissect the testes of male fish, so choose female fish), and feed the selected individuals with fish blocks Cultivated and used as artificial broodstock after reaching the age of 3+;

[0020] B, in the artificial broodstock of step A, select the individual from different wild parental combinations as the male and female broodstock of artificial breeding;

[0021] C. When the water temperature is 26°C, inject oxytocin to the female broodstock in step B: the first injection of LRH-A 23 μg / kg, after an interval of 12 hours, the second injection of LRH-A 27 μg +...

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Abstract

The invention relates to a completely-artificial hemibagrus wyckioides reproduction method. According to the method, individuals with remarkable growth rate advantages are selected from F1 progenies obtained through wild parent reproduction to serve as reserved parent fish, gender distinguishing is conducted after the reserved parent fish is over two years old, and then superior individuals are selected for cultivation and taken as artificial parent fish after being bred to over three years old; individuals from different wild parent combinations are selected from the artificial parent fish to serve as male and female parent fish for completely-artificial reproduction; odinagogue is injected into the female parent fish, and odinagogue is also injected into the male parent fish when odinagogue is injected into the female parent fish for the second time; dry artificial insemination is conducted by dissecting the male fish to take out testes and acquire seminal fluid and conducting egg stripping on the female fish, and then incubation and fry cultivation are conducted by routine. By the adoption of the method, the wild parents can be protected, cost for obtaining the wild parent fish can be reduced, labor force is saved remarkably, reproduction efficiency is improved, individuals with good growth traits can be selected in a targeted mode for reproduction, genetic diversity is maintained, and the problems of inbreeding and germplasm resource degradation during conventional reproduction are solved.

Description

technical field [0001] The invention relates to a fully artificial propagation method of the silk-tailed beetle, which belongs to the technical field of aquaculture. Background technique [0002] Silktail, scientific name Mystuswyckioides Chaux et Fang, the local name is Bearded Fish. The taxonomy belongs to the order Siluriformes, the family Bagridae, and the genus Siluriformes. Mystus , named after the upper lobe of the caudal fin elongated into filaments. In China, it is an indigenous species of Yunnan. It is distributed in the tributaries of the Lancang River and is rare in the main stream of the Lancang River; it is distributed in the lower reaches of the Mekong River in foreign countries. The silk-tailed beetle has a beautiful body color, the back is cyan, the side of the body is light blue, gradually turning lighter, and the abdomen is white. The outer edges of the dorsal, pelvic, and anal fins are slightly red, and the caudal fin is red. Its flesh is tender a...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCA01K61/00Y02A40/81
Inventor 薛晨江罗永新薛绍伟李光华马建颜雷春云张正兴孙昳王文玉代方舟
Owner 云南省渔业科学研究院
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