大鳍鳠的生长、死亡及合理利用研究

Study on Mystus macropter' Growth, Mortality and Utilization

用SAS统计软件拟合了大鳍的体长生长方程和体重生长方程：Lt＝79．5（1－e－0.0533(t+2.0982)）,W＝3370（1-e－0.0533(t+2.0982)）2.7744，并估算了其自然死亡系数M、捕捞死亡系数F。应用Beverton－Holt模式，研究了嘉陵江水系大鳍的资源状况，为开发利用提供科学依据。

SAS, as a sofeware, is applied to fit Mystus macropters' growth curve of both length and Weight Lt=79.5(l--0.0533(t=2.0982)),Wt=3370(l-e-0.0533(t+2.0982))2.7744and to estimate ist nature mortalithy M and capture mortatity F in this paper. Meanwhile, thith Beverton- Holt model the natural resources of Mystus macropters (Belaker) in the Jialing /river wsysterm have been studied ,exploited and utilized on the scientific basis.