蠡湖鲢鳙鱼生长的研究

The Preliminary Study on the Growth of Carp Fish in Lihu Lake

2009年9月，在蠡湖的水上明月、珍宝舫、美湖和鹿顶山用网具共进行了4次捕捞作业，鲢鱼的体重主要集中在6000－11000g范围内，年龄为3－5龄，鳙鱼的体重主要集中在7000－12000g范围内，年龄为3－5龄。鲢鱼的生长方程为Lt=130.56[1-e^-0.0958（t＋0.1499）] ，Wt=19768[1-e^-0.0958（t＋0.1499）]^3.035 ；鳙鱼的生长方程为Lt=135.78[1-e^-0.0952（t＋0.2403）] ，Wt=21465[1-e^-0.0952（t＋0.2403）]^2.8128 ，蠡湖鲢鳙鱼生长速度最快的年龄段是3-5龄。本研究对蠡湖鲢鳙鱼的种群结构及其生长特性进行了调查，旨在为保护和科学利用其渔业资源提供依据。

Four fishing were operated at Shuishangmingyue,Zhenbaofang,Meihu and Ludingshan to capture silver carp and bighead carp in September 2009. The weight of silver carp was from 6000g to11000g and the age was from 3 to 5. The weight of bighead carp was from 7000g to 12000g and the age was from 3 to 5. The growth equation of silver carp was Lt=130.56[1-e^-0.0958（t＋0.1499）] and Wt=19768[1-e^-0.0958（t＋0.1499）]^3.035. The growth equation of bighead carp was Lt=135.78[1-e^-0.0952（t＋0.2403）] and Wt=21465[1-e^-0.0952（t＋0.2403）]^2.8128 . The rapidest growth period was from age 3 to age 5. This study was mainly about the growth characteristics and community structure which will provide evidence for protection and utilization of fishery resources in Lihu lake.