ミクロキィスティスとクロレラを摂食したときのタマミジンコの成長, 産仔および同化について

概要

論文の詳細を見る
Experiments were made to evaluate Microcystis aeruginosa (blue-green alga) as food for Moina macrocopa (Cladocera) in comparison with Chlorella sp. (green alga). A stable isotope, ^13C, was used as a tracer to determine the assimilation rate and the food selection. M. aeruginosa as well as Chlorella sp. was well assimilated by M. macrocopa ; however, the rates of growth and reproduction of the Moina fed on Microcystis were significantly lower. When Chlorella was mixed with Microcystis as food, there was no significant inhibitory effect of Microcystis on the growth of Moina observed, although Microcystis was assimilated more than Chlorella. Therefore, it was supposed that the toxic effect of Microcystis might be masked by other species of algae in nature, or that other species (Chlorella in the present study) might compensate for the essential substances lacking in Microcystis aeruginosa. However, Moina macrocopa was one of the few species of zooplankton which could utilize Microcystis aeruginosa.
1984-06-30