Effects of algae on chronic assessment endpoints observed with Korean freshwater Cladocerans

The influence of different feeding rates of three green algae on growth and reproduction in four Korean cladocera, Daphnia sp., Daphnia obtusa, Moina macrocopa, and Simocephalus vetulus was investigated. The growth and reproduction rates of Daphnia sp. fed Chlorella vulgaris cells were significantly increased than those of daphnid fed Senedesmus subspicatus and Selenastrum carpricornutum. The total offsprings of Daphnia sp. fed and cells Chlorella vulgaris for 21days were and , respectively. The Daphnia obtusa fed and cells Selenastrum carpricornutum was shown good reproduction rates, and , respectively. The Moina macrocopa fed and cells Senedesmus subspicatus as well as Simocephalus vetulus and and cells Chlorella vulgaris were shown good reproduction rates. All of algae tested were sufficient as a good diet for Korean Cladocerans in this study. However, the preferred alga was Chlorella vulgaris and the optimal feeding concentrations were cells/mL, because the alga was shown most stable and generally high production rates in all cladocerans tested.