• Population dynamics ofBrachionus patulus Muller (Rotifera) in relation to food and temperature

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/anml/099/04/0335-0343

    • Keywords

       

      Rotifera; Brachionus patulus ; population dynamics; food; temperature

    • Abstract

       

      The combined effects of food (Chlorella) and temperature on the population growth of a laboratory clone of the rotiferBrachionus patulus were studied. The intrinsic rate of increase (r) as well as the maximum densities achieved were a function of temperature. While ther was negative at 15°C regardless of food level, its magnitude was dependent on food level at medium (25°C) and high (35°C) temperatures, indicating a significant temperature × food interaction. The seasonal variations in the abundance ofBrachionus patulus in the plankton of a regularly sampled pond are explained in terms of the observed food-temperature effects on the survival and reproduction of the laboratory population.

    • Author Affiliations

       

      S S S Sarmat1 2 T Ramakrishna Rao1

      1. Department of Zoology, University of Delhi, Delhi - 110 007, India
      2. Department of Animal Physiology, School of Biological Sciences, Madurai Kamaraj University, Madurai - 625 021, India
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