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丹江口水库翘嘴红鲌资源评析与合理利用
引用本文:熊国胜.丹江口水库翘嘴红鲌资源评析与合理利用[J].水产学报,1990,14(2):79-88.
作者姓名:熊国胜
作者单位:汉江丹江口水利枢纽管理局
摘    要:本文论述对翘嘴红鲌所作的观测,获得年龄、生长资料。采用Schaefer,Beverton-Holt模式评析。结果表明:翘嘴红鲌体重生长拐点为3.4110龄,自然死亡率M=0.4079,捕捞死亡率F=0.1050,总死亡系数Z=0.5129,最大持续产量MSY=113.21吨,最适捕捞强度f_(MSY)=458164公斤/日·吨,当F=0.2、t_e=2.5时,渔获量是现行产量的2.65倍。

关 键 词:翘嘴红鉑  丹江口水库  渔业资源评析  种群动态学
收稿时间:1988/11/1 0:00:00
修稿时间:9/1/1989 12:00:00 AM

AN ASSESSMENT OF WHITEFISH (ERYTHROCULTER ILISHAEFORMIS) POPULATION IN DANJIANGKOU RESERVOIR AND RATIONAL EXPLOITATION OF THE RESOURCE
Xiong Guosheng.AN ASSESSMENT OF WHITEFISH (ERYTHROCULTER ILISHAEFORMIS) POPULATION IN DANJIANGKOU RESERVOIR AND RATIONAL EXPLOITATION OF THE RESOURCE[J].Journal of Fisheries of China,1990,14(2):79-88.
Authors:Xiong Guosheng
Institution:The Management of Hanjiang-Danjiangkon Key Water Control Project, Danjiangkou
Abstract:The whitefish, Erythroculter ilishaeformis (Bleeker), is one of the important econmical fishes in the Danjiangkou Reservoir. This paper deals with the age growth, mortality of the whitefish as well as its harmfulness to the fingerlings of silver and bighead carps. In addition, population dynamics and rational exploitation of the fish are also discussed. The main technical calculation and chart are computationally processed by adoption of Schaefer and Beverton-Holt models. The results show:1. The growth of the whitefish in Danjiangkou Reservoir corresponds with von Bertalanffy's growth equations: The turning point of body weight and growth is at 3.4110 years.2. In Danjiangkou Reservoir, the fishing mortality coefficient F is 0.1050, the total mortality coefficient Z is 0.5129, and the natural mortality M is 0.4079.3. According to Schaefer model, the maximum sustainable yield (MSY) of the fish in Danjiangkou Reservoir is 113210 Kg, and the optimal fishing effort (F_msy) is 458164 Kg/day,T.4. When body length of the whitefish is from 366.7 to 395.5 mm, it would swollow the silver carp of 116.6 to 132.1 mm in length and bighead of 94.4 to 132.1 mm. If the first capture age of the whitefish is about 2.5 years (with body length of 400 mm and body weight of 900 g and mesh of gill net of 100-110mm), it would do no harm to the silver and bighead carps, for they are 167 and 183 mm in length respectively.5. If the age at first capture remains 2.5, the yield of whitefish will be 2.65 times as much as that at present, with the fishing Ievel F is 0.2.
Keywords:whitefish  Erythroculter ilshaeformis  Danjiangkou Reservoir  assessment of the fish resource  population dynamics
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