Some peculiarties of Bosmina (Crustancea, Cladocera) structures from Far Eastern Lakes

摘要

Studying the fine morphology of Bosmina form Bolon and Udyl lakes (the lower Amur River) using a scanning microscope shows that these cladocerans belong to the subgenus Sinobosmina (a postabdomental claw is similar to that in Eubosmina but lateral head pores are located in the same way as in Bosmina). Bosmina from these lakes are characteristic of complicated age and seasonal variability, especially in June. In these lakes they are represented by the varietet Bosmina (Sinobosmina) cyanopotamic var. praeliaris (Manuilova, 1964).