Thesis Title

Reproduction And Survivorship Of Two Species Of Daphnidae

Author

Marvin Claus

Date of Graduation

Spring 1977

Degree

Master of Science in Biology

Department

Biology

Committee Chair

Milton Topping

Subject Categories

Biology

Abstract

The reproduction and survivorship of Scapholeberis kingi and Simocephalus serrulatus were studied at 10°, 15°, 20°, and 25°C. Life tables were calculated at all temperatures from survivorship data for each species. Replacement rates of S. kingi and S. serrulatus, respectively, were 0.715 and 2.789 at 10°C, 2.637 and 3.310 at 15°C, 3.332 and 5.133 at 20°C, and 12.469 and 8.936 at 25°C. Intrinsic rates of population increase, obtained by iteration to a stable age structure, for S. kingi and S. serrulatus, respectively, were -0.012 and 0.030 at 10°C, and 0.052 and 0.078 at 15°C, 0.070 and 0.180 at 20°C, and 0.179 and 0.147 at 25°C.

Copyright

© Marvin Claus

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Dissertation/Thesis

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