Identification method of Chinese sturgeon young-fish wild population and artificial releasing population
A technology for Chinese sturgeon and juvenile fish, which is applied in the direction of human identification, biological testing, material inspection, etc., can solve the problem that the effect of proliferation and release cannot be objectively evaluated and the resources of Chinese sturgeon juvenile cannot be objectively evaluated. , unfavorable to the protection of Chinese sturgeon resources, etc., to achieve the effect of easy operation
Inactive Publication Date: 2009-12-30
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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Problems solved by technology
The effect of multiplication and release cannot be objectively and comprehensively evaluated for many years, and the resource volume of wild Chinese sturgeon juveniles cannot be objectively and comprehensively evaluated, which is not conducive to the protection of Chinese sturgeon resources.
At present, there is still no quick and effective method to identify wild Chinese sturgeon juveniles and artificially released Chinese sturgeon juveniles
Method used
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Experimental program
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Embodiment Construction
[0007] The present invention first distinguishes wild Chinese sturgeon juveniles and artificially cultivated Chinese sturgeon juveniles from the nostril shape of Chinese sturgeon juveniles. Wild Chinese sturgeon juveniles have a nasal septum in the middle of their nostrils, and more than 80% of artificially cultured Chinese sturgeon juveniles have no nasal septum in the middle of their nostrils. Chinese sturgeon juveniles with no variation in part of the nostrils were cultivated under artificial conditions (cement pool, glass tank, high density). The long-term friction between the body of the juvenile fish and the tank wall and between each other caused the wear and tear of the bone vertebrae to change the shape of the five rows of bone plate vertebrae. Therefore, compare its copied or rubbed or photographed patterns (the main parts are the front of the dorsal fin, the front of the pelvic fin and the side bone plate between the dorsal fin and the pelvic fin) with the wild Chines...
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A method for distinguishing a wild species of Chinese sturgeon parrs from an artificial-stocking one relates to the distinguishing between the Chinese sturgeon parrs naturally bred under natural conditions and the ones artificially bred and released, and needs to provide a method for quickly distinguishing the naturally bred and the artificially bred and released Chinese sturgeon parrs. The method adopts sample sketches of an incidentally-caught Chinese sturgeon parr and a wild Chinese sturgeon parr and is characterized in that Chinese sturgeon parrs to be distinguished are divided into the artificial-stocking and the wild Chinese sturgeon parrs according to that whether variation happens to nostrils thereof; sketches, rubbings or pictures of five-row vertebrae bones of the Chinese sturgeon parrs are compared with the sample sketch of the wild Chinese sturgeon parrs, or whether the vertebrae bones are abraded is checked, and if the appearances of the five-row vertebrae bones of the Chinese sturgeon parrs to be distinguished are respectively the same as or similar to corresponding parts of the sample sketches or the variation does not happen to the nostrils thereof, the Chinese sturgeon parrs to be distinguished belong to wild species; and if the appearances of the five-row vertebrae bones of the Chinese sturgeon parrs to be distinguished are not the same as or similar to corresponding parts of the sample sketches or the variation happens to the nostrils thereof, the Chinese sturgeon parrs to be distinguished belong to artificial-stocking species.
Description
Technical field: [0001] The invention relates to a method for distinguishing naturally bred Chinese sturgeon juveniles under natural conditions from artificially bred and released Chinese sturgeon juveniles. Background technique [0002] Chinese sturgeon (Acipenser sinensis Gray) belongs to the order Acipenseridae, Acipenseridae, and the genus Acipenserus. known as. As a relict species left over from the Cretaceous period, it has a narrow distribution area, a small number, and resource decline, and is now in an endangered state. The Yangtze River estuary is the only channel for upstream migration of Chinese sturgeon breeding populations and downstream migration of juveniles. Sexually mature Chinese sturgeons enter the Yangtze River from the offshore and reach the spawning grounds in the upper reaches of the Yangtze River from October to November to breed. It goes down the river and arrives at the Yangtze River Estuary from May to July of the following year. It seeks bait i...
Claims
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IPC IPC(8): A61B5/117G01N21/84G01N33/48
Inventor 章龙珍庄平刘鉴毅张涛冯广朋赵峰黄晓荣
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI