An Investigation Study on the Species,Quantity and Distribution of the Zooplankton in the Hasuhai Lake

Plankton consists of two great groups Zooplankton and Phytoplankton.Plankton is the main feeds for the Silver carp and Bighed carp,which are two species of “The four large domestic fishes” referred in the freshwater breeding.The species of Plankton and the charges in species quantities have a direct on the output of the Silver carp,Bighed carp and other species of carp.Therefore,investigation on the feed resources are of great economic value to the fishery production.Zooplankton is an important component part of feed resources,but there has no report presented untilnow,which is relating to current situation the Zooplankton resouces in the Hasuhai Lake.This article is mainly about the investigation results on the species,quantity and distribution of the Zooplankton in the Hasuhai Lake.