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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 782

S.S.S. Sarma and T. Ramakrishna Rao; The combined effects of food and temperature on the life history parameters of Brachionus patulus Muller (Rotifera). Int.Revue ges.Hydrobiol. 76(2):225-239, 1991

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The combined effects of different levels of temperature (15, 25, and 35 degrees C) and food Chlorella (1, 2 and 4x10E6 cells/ml) on the life history parameters (lifespan, life expectancy, net reproductive rate, intrinsic rate of increase, developmental time, and generation time) of a laboratory population of the rotifer Brachionus patulus were investigated. Both food and temperature, independently and in interaction, significantly influenced nearly all the parameters. The reproductive performance was a direct function of the food level, but the magnitude of food effect was temperature-dependent. The observed temperature x food interaction effects are explained in terms of the energetics of resource apportionment between metabolism and reproduction.