Annual Production of <i>Alocinma longicornis</i> in Lake Houhu (Wuhan, China)

Abstract

The production of Alocinma Longicornis in Lake Houhu was estimated by two method. The results are: 2. 22 g/(m2 a) of wet weight with shell or 0.1ll g/(m2 a) of dry weight shell-free by size-frequency method; 2. 177 g/m2 a of wet weight with shell or 0. 109 g/mz a of dry weight shell-free by instantaneous growth method. The corresponding P/B ratio are 4. 0,5. 4,respectively.