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Andrias davidianus artificial enhancement and releasing method

A technology for breeding and releasing giant salamanders, which is applied in animal husbandry and other fields

Inactive Publication Date: 2013-12-04
JISHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but did not involve specific artificial release techniques

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Selection of release site: According to the selection criteria of release point, choose the release site of giant salamander from the four aspects of climate, concealment, water quality and bait organisms. The release point is an area of ​​about 1000 m2 2 of the cave. The cave and the river reach outside the cave meet the following conditions: A. Climate: warm in winter and cool in summer, with an annual water temperature of 5°C to 25°C. B. Concealment: The conditions of the river reach in the karst cave are: the river width and depth are small, respectively (2.81~11.84) m and (0.37~1.95) m; the bottom is all stony: sand, pebbles or Reef; the river bank is composed of stone walls; the water flow velocity in the river section is relatively large, ranging from 0.21 to 0.48 m / s; there are a certain number of caves in the river section, more than 4 / 100m; the annual water depth in the caves is more than 0.15m. The characteristics of the river reach outside the discharge...

Embodiment 2

[0027] This embodiment is basically the same as Embodiment 1, the difference is that the discharge point is an area of ​​about 2000 m 2 In the karst cave, 8 mature giant salamanders of 1~2kg were released in April, ♀:♂= 4:4, and 30,000 bait fry were artificially released. With only post-stage safety management, the natural breeding population of giant salamanders will increase by about 300 each year.

Embodiment 3

[0029]This example is basically the same as Example 2, the difference is that the release point is the river section, and 100 m above and below the release point, a 2-meter-high blocking net is established, and 100,000 bait fry are artificially released. In May, 10 mature giant salamanders weighing 1~2kg are released, ♀:♂= 4:6, and the number of giant salamanders increases by about 200 each year.

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Abstract

The invention provides an Andrias davidianus artificial enhancement and releasing method, which comprises the steps of selecting habitat suitable releasing locations from aspects of climate, covers, water quality and food organisms, and performing ecological optimization from the aspects of enhancement of food organisms, improvement of cave characteristics, construction of facilities for preventing harmful organisms, flood, escape, thieves and the like; selecting sexually mature wild or first filial generation Andrias davidianus with strong physical constitution and suitable specifications at a suitable female-male ratio, and performing culture in the wild; selecting suitable time for scientific releasing; and performing later-stage management to the released Andrias davidianus. The Andrias davidianus artificial enhancement and releasing method has the advantages that not only can the wild resources of Andrias davidianus be effectively restored, but also the biological diversity at releasing locations is enriched, the natural propagation of the released Andrias davidianus can also supplement high-quality fries in short supply for the Andrias davidianus artificial breeding industry, the economic benefits of Andrias davidianus with a very high economic value are better promoted, and the economic, social, environmental and ecological benefits are very remarkable; and the technique is practical and reliable, the operability is high and the artificial releasing of Andrias davidianus can be effectively realized.

Description

technical field [0001] The invention belongs to the technical field of artificial proliferation and release of aquatic animals, in particular to the artificial proliferation and release technology of Chinese giant salamanders. Background technique [0002] Artificial breeding and release is an important measure to protect aquatic animal resources. But at present, people's research on the technology of artificial proliferation and release is still rare. The Chinese patent disclosed "A method for releasing wild soft-shelled turtles in natural lakes and shoals" (201110288238.5), which selects the naturally formed lake shoal water surface as the breeding base and feeds wild snails, mussels, small fish and shrimps in the lake. And cultivate the natural wild Xianglian, wild water chestnut, wild citrus, etc. in the lake, which can effectively improve the quality of soft-shelled turtles. But this method is only limited to the cultivation of imitating wild soft-shelled turtle, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02
Inventor 罗庆华王朝群刘英陈秋宇王金平
Owner JISHOU UNIVERSITY
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