An individual-based model for competingDrosophila populations |
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| Authors: | Vincent A. A. Jansen and Jan G. Sevenster |
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| Affiliation: | (1) NERC Centre for Population Biology, Imperial College at Silwood Park Ascot, SL5 7PY Berks, UK;(2) Institute of Evolutionary and Ecological Sciences, Leiden University, P.O. Box 9561, NL-2300 RA Leiden, The Netherlands;(3) Present address: Department of Zoology, University of Oxford, South Parks Road, OX1 3PS Oxford, UK |
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| Abstract: | An individual-based model forDrosophila is formulated, based on competition amongst larvae consuming the same batch of food. The predictions of the model are supported by data for single speciesDrosophila populations reared in the laboratory. The model is used to build a simple discrete model for the dynamics ofDrosophila populations that are kept over a number of generations. The dynamics of a single species is shown to give either a stable equilibrium or fluctuations which can be periodic or chaotic. When the dynamics of a species in the absence of the other is periodic or chaotic, we found coexistence or two alternative states, on neither of which the species can coexist. |
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| Keywords: | coexistence competitive exclusion mathematical model population dynamics single resource competition |
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