Effects of different food doses on cadmium toxicity to Daphnia magna

This is the authors' abstract. We don't add key points for this paper.

Chronic toxicity tests were conducted with Daphnia magna using cadmium concentrations of 0, 0 5, 1, 2, and 5 μg/L Cd with algae doses of 0 8, 4, 8, and 16 106 cells/d of Chlorella saccharophila for each In this way we were able to determine the effects of cadmium on the life table data of individuals, under different nutritional conditions The development of juvemles was found to be inhibited by cadmium at low food doses, whereas body length and reproduction were strongly affected at higher food levels The molting interval of adults and the development rate of embryos proved to be unaffected by cadmium Cadmium stressed animals lived longer than did the unstressed controls The intrinsic rate of natural increase was generally reduced by cadmium, independent of the food dose