The density and species number changes of zooplanktons in abalone cultured ponds during the winter
越冬期鲍养成池中浮游动物密度与种类的变化

The zooplankton species composition and density change in abalone culture ponds during the winter were studied in this paper.Totally 33 species of zooplanktons,including 23 ciliates,5 flagellates,5 rotifer and 1 copepod were found during the investigation.The dominant species were Miracia efferata and Uromena marinam,and both Colurella uncinata and Dysteria lancolata were familiar species.The water from the sand beach well could reduce the zooplankton species except protozoan.