武汉后湖铜锈环棱螺的周年生产量  

Annual Production of Bellamya aeruginosa in Houhu Lake, Wuhan

作　　者：闫云君[1] 梁彦龄[1] 王洪铸[1] 

机构地区：[1]中国科学院水生生物研究所

出　　处：《湖泊科学》2000年第1期68-72,共5页Journal of Lake Sciences

基　　金：国家自然科学基金!(39600019和39430101)

摘　　要：１９９６－１９９７年对后湖铜锈环棱螺进行了周年研究，结果表明其种群含三个年龄组，其中１９９６年组生长最快，其去壳干重瞬时生长率为２．８０．采用瞬时生长率法测算其周年生产量为：带壳湿重３３．１３ｇ ｍ－２ａ－１；去壳千重１．９３２ｇ ｍ－２ａ－１；Ｐ／Ｂ系数为０ ．８５．An investigation on one of the dominant species of gastropods, Bellamya aeruginosa in Houhu Lake, Wuhan was carried out from April, 1996 to March, 1997. The results showed that the population was composed of three year classes, among which the 96 year class grew most quickly, with instantaneous growth rate of dry weight (unshelled) 2. 80. The annual production of the animal calculated by instantaneous growth rate method was: wet weight, 33. 13 g m-2 a-1; dry weight (unshelled), 1. 932 g m-2 a- 1. The corresponding annual P/B ratios was 0. 85.

关 键 词：铜锈环棱螺 生产量 P/B系数 湖泊 周年产量 

分 类 号：Q178[生物学—水生生物学]