Studies On The Biology Of Water Environment And Culture Of Aquatic Economic Animals

Macro-invertebrate from Annelida, Mollusca, Arthropoda and Nemathelminthes were found in six sections from Baihe to Zhejiang road in the Suzhou river, among which, four species were from Oligochaeta, two species from Hirudinea, five species from Gastropoda, two species from Bivalvia and several species from Insecta (unidentified). The community structure of macro-invertebrates became simple with the sediment pollution getting heavier. Limited species, high pollution resistibility were the characteristics of the species survival. The amounts of Limnodrilus hoffmeisteri increased gradually from Baihe to Huacao section, and reached a peak in Huacao section; Species from Annelida, Mollusca were not found in Beixinjing and Wuninglu sections; Species from Oligochaeta were found and had certain numbers in Zhejiang road section as the result of the effect of counterflow of the Huangpu river.