Brachionus plicatilis, a euryhaline species of the Rotifera, is widely distributedin both freshwater and marine environments. The high caloric value, small size andrelative ease of mass culture have all served to make B. plicatilis the only artificialbreeding species in the field of large-scale mariculture as a kind of important nurserybait. The life history of B. plicatili is comprised of two alternation of generations,parthenogenesis and sexual reproduction, which make them an ideal model forbiological st...