Method for inducing gonad maturity and ovulation of verasper variegates parent fish by implanting slow-release hormone

The technology for broodstock and gonads is applied in the field of broodstock breeding, and can solve the problems of low fertilization rate, low rate of successful ovulation broodstock, large differences in egg quality, etc., and achieves low mortality, good ovulation effect and mature high rate effect
CN101699997AInactive Publication Date: 2010-05-05YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
Publication Date
2010-05-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for inducing gonad maturity and ovulation of a verasper variegates parent fish by implanting a slow-release hormone, which comprises two aspects of cultivating an optimally selected parent fish and adjusting temperature and light to promote the gonad development of the parent fish, and implanting the slow-release hormone for promoting a metrocyte of the parent fish to reach final maturity and ovulation. In the invention, the slow-release hormone is a salmon gonadotropin-releasing hormone analog (sGnRHa) and is coated with a safe and high-efficiency polymer slow-release transitive system (95 percent of cholesterol and 5 percent of cellulose); a female parent fish with gonad in fourth stage is selected by using a living body sampling method or a light table method; a special implanting gun is used for implanting in back muscles, and the effect time of the slow-release hormone lasts for 14-18 days. The method can enable the metrocyte of the verasper variegates parent fish to achieve final maturity and ovulation, has low duress on parent fish reproduction, high rate of parent fish survival and gonad maturity, high fertility rate being 72 percent and high hatching rate being 56.2 percent, and can acquire a bulk of high-quality oosperms. The invention is a set of complete control technique method, can stably regulate and control the development, the maturity and the ovulation of the gonad of the verasper variegates parent fish, and acquire high-quality oosperms.
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Description

Technical field:

[0001] The invention belongs to the broodstock breeding technology of the star flounder, and is a method for artificially implanting slow-release hormones to promote the final maturation and ovulation of oocytes of the star flounder broodstock and obtain batches of high-quality fertilized eggs. technical background:

[0002] Verasper variegates T.&S. (Verasper variegates T.&S.) is mainly distributed in my country’s Yellow Sea, Bohai Sea, East China Sea, Japan, North Korea and other waters. The production is not much. It is a cold-temperature type large benthic fish, mostly living in coastal waters or In the bay, long-distance migration is not done, and it is an excellent species for resource proliferation and artificial breeding. Star flounder has beautiful appearance, large body, delicate and delicious meat, thick and elastic fin edge, rich in vitamins and trace elements, rich in nutrients, easy to cook, and it is loved by consumers and has great market developme...

Claims

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