Varieties of Fishes and Growth Characteristics of Aristichthys nobilis in Shanmei Reservoir
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摘要: 山美水库的鱼类资源调查结果表明:山美水库所有鱼类组成包括10科37种, 其中鲤科22种, 占59.46%;鮠科4种, 占10.8%;鳢科和鳗鲡科各2种;鳅科、丽鱼科、鮨科、鲶科、青鳉科、银鱼科等各1种。鳙鱼的生长特性调查表明:鳙体重与体长的关系为W=0.0269×L2.9132, 体长与鳞径关系为L=0.0129×R+3.5323, Von Bertalanffy生长方程为Lt=107.2167×[1-e-0.1349 (t+0.1561) ]及Wt=22095.9566×[1-e-0.1349 (t+0.1561) ]3。生长拐点出现在7.99龄, 生长系数k=0.1349, t0=-0.1561。山美水库鳙的渐进体长可达107.22cm, 渐进体重可达22.1kg。Abstract: Thirty-seven species in 10fish families were found in Shanmei Reservoir.They included 22species of Cyprinidae, accounting for 59.46% of the total, and 4species of Bagridae, accounting for 10.81% of the total.There were also respectively 2species of Channidae and Anguillidae, and one species of Cichlaidae, Siluridae, Serranidae, and Adrianichthyidae.Specifically, the growth characteristics of Aristichthys nobilis found in the reservoir were observed: (a) its body weight (W) could be related to the length (L) as W=0.0269×L2.9132; (b) its body length to the scale size (R) as L=0.0129×R+3.5323; (c) its Von Bertalanffy growth equations were Lt= 107.2167×[1-e-0.1349 (t+0.1561) ]and Wt =22095.9566×[1-e-0.1349 (t+0.1561) ]3; (d) its growth inflection point occurred at 7.99-year-old; (e) its maximum body length, L∞, was 107.22cm; (f) its maximum body weight, W∞, reached 22.1kg;and, (g) the growth coefficients were k=0.1349and t0 =-0.1561.
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Key words:
- Shanmei rservoir /
- fish varieties /
- Aristichthys nobilis /
- growth characteristics
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