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Method for hybridizing female verasper variegatus and male verasper moseri for breeding and fry cultivating

A technology of crossbreeding and cross-breeding of star flounder, applied in fish farming, application, climate change adaptation, etc., to achieve the effect of large-scale seed breeding

Inactive Publication Date: 2012-11-07
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: by regulating the water temperature and light in the breeding environment, simulating the developmental law of the broodstock gonads in the natural environment, artificially stimulating and controlling the central nervous system and endocrine system of the fish, and promoting the growth of the female star flounder and striped flounder. The gonads of the male star flounder develop synchronously; through the method of artificial cross-breeding, the female star flounder × the male star flounder are crossed to breed new high-quality seedlings; at the same time, the technology of breeding new seedlings is explored

Method used

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  • Method for hybridizing female verasper variegatus and male verasper moseri for breeding and fry cultivating

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Embodiment Construction

[0038] The males of the spotted flounder are smaller and have greater differences between males and females, while the males of the spotted flounder are larger. The two belong to the same genus and have a close relationship. Complementary advantages. Under the support of the national "863" program (No.2006AA10A414) and (No.2010AA10A402), we conducted experimental research on the crossbreeding of the female star flounder × the male star flounder from 2009 to 2010, and explored and bred new species of flounder. High-quality cultured species. Although both belong to the same genus, they each have their own biological characteristics. How to synchronize the development of the two is the first problem encountered; artificial insemination, hatching of fertilized eggs, cultivation of larvae and juvenile fish, and large-scale seed breeding are also new problems.

[0039] Below in conjunction with embodiment content of the present invention is described in detail, and this research i...

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Abstract

The invention discloses a method for hybridizing female verasper variegatus and male verasper moseri for breeding and fry cultivating, comprising the steps of selection of parents, parent fish cultivation and reproduction control, artificial insemination and incubation and cultivation of fish larvae and juvenile fish, wherein female verasper variegatus older than 3 years is selected to be used asa female parent, and male verasper moseri older than 2 years is selected to be used as a male parent; and the sexual maturity synchronization of the female parent fish and the male parent fish is promoted by means of temperature control, light control and nutrition enhancement. With respect to the artificial insemination, the insemination rate reaches 50%; the water temperature for incubation is (10+ / -0.5) DEG C, fish larvae can be incubated from inseminated eggs after 160 hours, and the incubation rate reaches more than 50%; and with respect to a feed series, L-type brachionus plicatilis andchlorella sp., artemia nauplii, and compound feed are respectively applied in different stages. The fish larvae (1-35 days in age) in an early stage are cultivated in a small water body (3m<3>) at the water temperature of (10+ / -0.5) DEG C; after 3 days, the temperature is raised by 0.5 DEG C every 2 days and is kept unchanged after reaching (15+ / -0.5) DEG C; and the fish larvae in a later stage are cultivated in a water body (30m<3>). After cultivating for 80 days, the survival rate of the fish larvae growing into the juvenile fish of 30mm in average is 20%. The method disclosed by the invention can be used for cultivating novel breeds and realizing scale breed reproduction.

Description

Technical field: [0001] The invention belongs to the seed breeding of seawater fishes in aquaculture, and specifically relates to a method for artificially hybridizing and cultivating new breeds and breeding seedlings by selecting female flounder and male flounder. Background technique: [0002] The round-spotted star flounder (Verasper variegates T.&S.) is mainly distributed in the Yellow Sea, Bohai Sea, East my country Sea, Japan, North Korea and other waters of China, and its output is not much. In the bay, there is no long-distance migration, and it is an excellent species for fishery resource proliferation and artificial breeding. Striped star flounder (Verasper moseri) is a cold-water benthic large-scale flounder, mainly distributed in the Pacific coast north of Ibaraki Prefecture in Japan and the Japan Sea coast north of Wakasa Bay. It was also distributed in the Yellow Sea and Bohai Sea in my country before, but it has not been seen for many years. See catch. Star fl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 孙中之柳学周徐永江王妍妍王荣之刘寿堂
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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