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Artificial breeding method of Gymnodiptychus pachycheilus

A technique of artificial reproduction of the thick-lipped naked-lipped fish, which is applied in fish farming, application, climate change adaptation, etc., to achieve the effects of high hatching rate, recovery of resources, and high fertilization rate

Inactive Publication Date: 2012-11-21
GANSU AQUATIC PROD INST
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In order to save P. pachyrhiza and increase its population, it is an effective way to adopt artificial reproduction, but so far there has been no report on the artificial reproduction of P. pachyrhiza, and there is no document showing that anyone have done similar work

Method used

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Embodiment Construction

[0015] The premise of artificial breeding of fish is to make correct gender identification of broodstock. During the breeding season, the secondary sexual characteristics of sexually mature males are very obvious. In the early stage, on the anal fin, gray-white hard warts (chasing stars) appear along the fin rays and are the size of rice grains. With the further development of the gonads, chasing stars appeared successively in the caudal fin, pectoral fin, pelvic fin, front head, snout and other parts. The anal fin, caudal fin, pectoral fin, and pelvic fin gradually turn dark red from the base to the outside. There are two arc-shaped hooks at the end of the last two fin rays on the side of the caudal fin at the base of the anal fin and the end of the interstitium. At this time, lightly press the abdomen, and white semen will flow out.

[0016] Female fish that have reached sexual maturity do not have the above signs and do not appear to be chasing stars. The most obvious feat...

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PUM

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Abstract

The invention discloses an artificial breeding method of Gymnodiptychus pachycheilus. The artificial breeding method includes selecting parent fishes with ovaries and testes growing to V phase for artificial ovum collection and sperm collection, mixing to fully contact the ova with sperm, adding 40-80ml of isotonic solution, mixing well gain, adding 300-1000ml of fresh water into a container, continuing mixing well, finishing fertilization, and cleaning the fertilized ova in the container slowly to activate the sperms, placing the fertilized ova into a hatching net cage according to the density of 5-15 ova / cm<2>, placing the hatching net cage into a hatching tray, and placing the hatching tray into a hatching tank for hatching.

Description

technical field [0001] The invention relates to an artificial propagation method of wild fish, in particular to an artificial propagation method of pachyrhiza pachyrhiza. Background technique [0002] Thick-lipped naked heavy-lipped fish ( Gymnodiptychus pachycheilus Herzenstein), which belongs to Cyprinidae, Cyprinidae, Schizothorax subfamily, Naked double lip fish in classification, is commonly known as stone flower fish, Taohe fish, etc., is one of the four famous fish in Gansu, distributed in the upper reaches of the Yellow River and its tributaries The middle and upper reaches of the Tao River. Due to its high economic value, it has been overfished by people, and the amount of resources has declined sharply. [0003] Studies have shown that under natural conditions, the survival rate of natural reproduction of P. pachyrhiza is extremely low, and the possibility of increasing its population by relying on natural reproduction of P. pachyrhiza is extremely low. In ord...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 娄忠玉张艳萍焦文龙秦懿虎永彪周蓉王太杨顺文史小宁李文
Owner GANSU AQUATIC PROD INST
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