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Trade-off between r -selection and K -selection in Drosophila populations
Open accessAbstract
Density-dependent genetic evolution was tested in experimental populations of Drosophila melanogaster subject for eight generations to natural selection under high ( K -selection) or low ( r -selection) population density regimes. The test consisted of determining at high and at low densities the per capita rate of population growth of the selected populations. At high densities, the K -selected populations showed a higher per capita rate of population growth than did r -selected populations, but the reverse was true at low densities. These results corroborate the predictions derived from formal models of density-dependent selection. However, no evidence of a trade-off in per capita rate of growth was observed in 25 populations of D. melanogaster , each homozygous for a different second chromosome sampled from a natural population.
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Citations
Cited by
Reznick, D., Butler IV, M. J., & Rodd, H. (2001) · The American Naturalist · doi:10.1086/318627 · Cited by 451
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Finch, C. E., & Rose, M. R. (1995) · The Quarterly Review of Biology · doi:10.1086/418864 · Cited by 376
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De Leij, F. A. A. M., Whipps, J. M., & Lynch, J. M. (1994) · Microbial Ecology · doi:10.1007/bf00170116 · Cited by 276
Metadata
- Authors
- Mueller, L. D., & Ayala, F. J.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1981-02
- Volume
- 78
- Issue
- 2
- Pages
- 1303-1305
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2035023435
- Cited by
- 168
- References
- 0
- FWCI
- 2.69
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Trade-off between r -selection and K -selection in Drosophila populations. https://app.cochat.ai/papers/10.1073/pnas.78.2.1303
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- Mueller, L. D., & Ayala, F. J. (1981). Trade-off between r -selection and K -selection in Drosophila populations. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.78.2.1303
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