出典:Wikipedia
出典:『Wikipedia』 (2011/01/05 01:47 UTC 版)
Bosmina is a genus in the order of Cladocera. Males vary in size from 0.4–0.5 mm and females vary in size from 0.4–0.6 mm. There are more females than males in populations of Bosmina. Major characteristics to males are notched antennules and modified first legs. Females have antennules that are large and fixed to the head, curving backward parallel to each other. Both males and females have a pointed spina.