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Method for breeding low temperature-resistant large yellow croakers

A technology of large yellow croaker and low temperature resistance, which is applied in fish farming, application, climate change adaptation, etc., to achieve broad industrialization prospects and the effect of good tolerance to low temperature environments

Inactive Publication Date: 2009-12-23
ZHEJIANG OCEAN UNIV
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AI Technical Summary

Problems solved by technology

[0004] However, there is currently no literature pointing out the methods for breeding, breeding and identification of large yellow croaker in colder seawater temperatures

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The main steps of the method for breeding low temperature resistant large yellow croaker include A, B, and C three steps:

[0038](A) Prefer low-temperature-resistant large yellow croakers: select more than 50 healthy adult large yellow croakers grown in ordinary sea areas, and culture them at a low temperature of 4°C to 8°C for more than 5 days until a small number of them survive; When only male large yellow croakers or only female large yellow croakers survive, this step needs to be repeated until both male large yellow croakers and female large yellow croakers survive; when breeding low temperature resistant large yellow croakers, dead large yellow croakers need to be removed in time to maintain breeding Cleaning of waters. The cooling method is to add ice cubes or dry ice to the culture pond. The selected large yellow croaker is artificially cultured large yellow croaker in ordinary sea areas. After the optimization of step (A), when the number of surviving large ...

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Abstract

The invention belongs to the field of seawater aquaculture and particularly relates to a method for breeding and identifying low temperature-resistant large yellow croakers (also known as Pseudosciaena crocea). The invention mainly solves the status quo that a majority of large yellow croakers are not capable of accommodating to low-temperature culture currently; and the invention provides a method for breeding low temperature-resistant large yellow croakers by selecting large yellow croaker individuals capable of naturally resisting the low temperature and breeding on preferential basis, and provides a method for identifying low temperature-resistant large yellow croakers at the same time. The low temperature-resistant large yellow croakers are obtained through multi-generation breeding and culturing, observation-based identification and DNA identification.

Description

technical field [0001] The invention belongs to the field of seawater aquaculture, and in particular relates to a method for breeding and identifying low-temperature-resistant large yellow croakers. Background technique [0002] Large yellow croaker is the main economic fish in China's coastal waters. Large yellow croaker is a group migratory fish in warm-temperate offshore waters. It mainly inhabits the middle and lower layers of the coast and offshore waters within 80 meters. Because large yellow croaker is a migratory fish in warm-temperate offshore clusters, changes in ocean temperature limit offshore artificial breeding. [0003] The cultivation and optimization method of large yellow croaker has always been the main research direction in this field, as a Chinese patent No. CN200510060346.1 discloses a kind of artificially cultivated large yellow croaker and its cultivation method, which comprises the following steps: An artificially bred large yellow croaker and its b...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 吴常文张建设常抗美黄振远
Owner ZHEJIANG OCEAN UNIV
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