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Method for enhancing resilience of whitebait germplasm

A whitebait and germplasm technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of reduced adaptability, small population size, loss and increased variation, etc., to maintain basic stability, maintain yield and quality Effect

Inactive Publication Date: 2012-10-17
单峻峰
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Problems solved by technology

On the other hand, due to the isolation of water bodies, especially small water bodies, lack of habitat diversity and small population size, inbreeding is easy to occur, resulting in the loss of genetic variation and increased homogeneity, resulting in reduced adaptability and increased loss. Mutations

Method used

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Embodiment Construction

[0023] 1. Establish a natural germplasm resource bank of high-quality whitebait in Taihu Lake: take Taihu Lake and its affiliated water bodies as the carrier, and transfer high-quality big whitebait and Newbait of Taihu Lake that are native to Taihu Lake and have grown in different high-quality waters for more than 10 years The species were re-implanted into the excellent waters of Taihu Lake, and the high-quality whitebait germplasm resource bank of Taihu Lake was established.

[0024] 2. Establish seedling breeding bases: In addition to establishing high-quality whitebait seedling breeding and hatching bases in the core area of ​​Taihu Lake, in Shitokoumen, Changchun, Jilin, Xinlicheng, Longhupao, Daqing, Heilongjiang, Hongshan, Chifeng, Inner Mongolia, Sanzuodian, Xiaolangdi, Henan Establish high-quality whitebait seedling breeding branch bases in 9 regions with different ecological environments, including Danjiangkou in Hubei, Wanlu Lake in Heyuan in Guangdong, and Fuxian ...

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Abstract

The invention relates to a method for enhancing resilience of whitebait germplasm. The method is characterized by comprising the following steps of: 1, building a Taihu lake whitebait natural germplasm resource base; 2, building a seedling breeding base: constructing seedling combination units; 3, constructing seedling combination, forming a combination by at least five combination units, expanding and breeding; 4, building a manual spawning ground, and effectively recovering the breeding potential of whitebaits in lakes and reservoirs. The fertilized eggs of whitebaits growing at different areas, different heights and different latitudes are combined based on the gene difference caused by heterogeneity and population genetic changes of ecological environment, and then fed into a relatively sealed lake and / or reservoir to breed young generation, keep and breed, so as to increase the amount of the high-quality population and enhance the resilience of whitebait germplasm, and thus the yield and the quality of the whitebaits are improved.

Description

technical field [0001] The invention relates to a method for improving the stress resistance of silverfish germplasm, and belongs to the technical field of fish reproduction. Background technique [0002] Silverfish is a general term for fishes in the family Salangidae. There are 17 species of 6 genera of silver fish known in the world, and 15 species of 6 genera in China, including 6 endemic species, ranking first in the world both in terms of species and output. my country's middle and lower reaches of the Yangtze River and its estuaries and affiliated lakes have the most species of whitebait. Due to factors such as water pollution, barriers of rivers and lakes, and deterioration of ecological conditions, the production of whitebait has dropped significantly, and some even pose a direct threat to the survival of the species. The most famous Taihu whitebait, the output reached 3,000 tons in the 1970s and 1980s. By the beginning of this century, the output was less than 1,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 单峻峰任百洲单金根单志鹏杨暑鸣
Owner 单峻峰
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