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The Combined Effects of Food and Temperature on the Life History Parameters of Brachionus patulusMULLER (Rotifera)

✍ Scribed by S. S. S. Sarma; T. Ramakrishna Rao


Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
828 KB
Volume
76
Category
Article
ISSN
1434-2944

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✦ Synopsis


The combined effects of different levels of temperature (15". 25" and 35 "C) and food Chlorella (1,2 and 4 x 106 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 patulua 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.


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