傀儡湖18种鱼类全长与体重关系研究

LENGTH-WEIGHT RELATIONSHIPS OF 18 FISH SPECIES FROM LAKE KUILEI, YANGTZE RIVER BASIN, CHINA

摘要: 为了了解中国长江中下游湖泊——傀儡湖(N 31º24′, E 120º51′)鱼类生长的特性, 于2013年4月至2015年4月利用地笼、多网目复合刺网和网簖等工具对该水域鱼类进行了月度调查。共捕获鱼类18种, 隶属于3科, 主要以鲤科鱼类为主。运用最小二乘法对这18种鱼类的全长和体重的回归关系进行拟合, 其中3种鱼类全长与体重的回归方程为首次拟合。此外, 15种鱼类的最大全长超过世界鱼类数据库(FishBase)中记录的最大全长。研究提供的鱼类全长与体重回归方程及其参数填补了世界鱼类数据库的空白。

Abstract: This study is based on monthly sampling (from April 2013 to April 2015) of 18 fish species representing three families. Samples were obtained using benthic fyke-nets, block nets, and multi-mesh gillnets in Lake Kuilei, a shallow lake of the Yangtze River basin, China (N 31º24′ , E 120º51′). Using ordinary least-squares linear regression, length-weight relationships of these fish species were estimated, with equations for 3 species reported for the first time. The maximum total length records of the 15 species exceeded those reported in FishBase. This paper provides new LWR equations for these species to be included in FishBase.