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Evolutionary Ecology

, Volume 4, Issue 4, pp 290–297 | Cite as

Density-dependent natural selection does not increase efficiency

  • Laurence D. Mueller
Article

Summary

Populations ofDrosophila melanogaster kept at high population density (K-selected) for 125 generations have higher larval viability than populations kept at low densities (r-selected) when both are raised under crowded conditions. In additionK-selected adults that emerge from crowded cultures are larger than theirr-selected counterparts. These differences cannot be explained by differences in efficiency of food use. The minimum food required for successful pupation is actually greater in theK-selected populations. I conjecture that there may be a trade-off between minimum food requirements and competitive ability, which has changed substantially in theK-selected populations. The possibility thatK-selected larvae can dig more more deeply and gain access to unused food is examined and rejected as a possible explanation of the viability differences. Evidence is provided supporting the hypothesis that the differences in viability may be due to an increased tendency of theK-selected larvae to pupate off the surface of the medium.

Keywords

Drosophila melanogaster competitive ability efficiency r-selection K-selection 

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References

  1. Ayala, F. J. (1965) Evolution of fitness in experimental populations ofDrosophila serrata.Science 150, 903–5.PubMedGoogle Scholar
  2. Ayala, F. J. (1968) Genotype, environment and population numbers.Science 162, 1453–9.PubMedGoogle Scholar
  3. Bakker, K. (1961) An analysis of factors which determine success in competition for food among larvae ofDrosophila melanogaster.Arch. Neerl. Zool. 14, 200–81.Google Scholar
  4. Bierbaum, T. J., Mueller, L. D. and Ayala, F. J. (1989) Density-dependent life history evolution inDrosophila melanogaster, Evolution 43, 382–92.Google Scholar
  5. Bishop, Y. M. M., Fienberg, S. E. and Holland, P. W. (1975)Discrete Multivariate Analysis. MIT Press, Cambridge.Google Scholar
  6. Botella, L. M., Moya, A., González, M. C. and Ménsua, J. L. (1985) Larval stop, delayed development and survival in overcrowded cultures ofDrosophila melanogaster: effect of urea and uric acid.J. Insect Physiol. 31, 179–85.CrossRefGoogle Scholar
  7. Boyce, M. S. (1984) Restitution ofr- andK-selection as a model of density-dependent natural selection.Ann. Rev. Ecol. Syst. 15, 427–47.Google Scholar
  8. Burnet, B., Sewell, D. and Bos, M. (1977) Genetic analysis of larval feeding behavior inDrosophila melanogaster II. Growth relations and competition between selected lines.Genet. Res. Camb. 30, 149–61.Google Scholar
  9. Buzzati-Traverso, A. A. (1955) Evolutionary changes in components of fitness and other polygenic traits inDrosophila melanogaster populations.Heredity 9, 153–86.Google Scholar
  10. Chiang, H. C. and Hodson, A. C. (1950) An analytical study of population growth inDrosophila melanogaster.Ecol Monogr. 20, 173–206.Google Scholar
  11. Efron, B. (1979a) Bootstrap methods: another look at the jackknife.Annals of Statistics 6, 1–26.Google Scholar
  12. Efron, B. (1979b) Computers and the theory of statistics: thinking the unthinkable.Society for Industrial and Applied Mathematics Review 21, 460–80.Google Scholar
  13. Efron, B. (1981) Nonparamethric standard errors and confidence intervals.Canadian Journal of Statistics 9, 139–72.Google Scholar
  14. Godoy-Herrera, R. (1979) Selection for digging behavior inDrosophila melanogaster larvae.Behav. Genet. 8, 474–9.Google Scholar
  15. Joshi, A. and Mueller L. D. (1988) Evolution of higher feeding rate inDrosophila due to density-dependent natural selection.Evolution 42, 1090–3.Google Scholar
  16. Luckinbill, L. S. (1978)r-andK-selection in experimental populations ofEscherichia coli.Science 202, 1201–3.Google Scholar
  17. MacArthur, R. H. (1962) Some generalized theorems of natural selection.Proc. Natl. Acad. Sci. USA 48, 1893–7.Google Scholar
  18. MacArthur, R. H. and Wilson, E. O. (1967)The Theory of Island Biogeography. Princeton University Press, Princeton, N.J.Google Scholar
  19. McEvoy, P. B. (1984) Increase in respiratory rate during feeding in larvae of the cinnabar mothTyria jacobaeae.Physiol. Ent. 9, 191–5.Google Scholar
  20. Ménsua, J. L. and Moya, A. (1983) Stopped development in overcrowded cultures.Heredity 51, 347–52.PubMedGoogle Scholar
  21. Moya, A. and Botella, L. M. (1985) Larva-to-adult and pupa-to-adult mortality dynamics in crowded cultures ofDrosophila melanogaster.Genetica.67, 201–7.Google Scholar
  22. Mueller, L. D. (1987) Evolution of accelerated senescence in laboratory populations ofDrosophila.Proc. Natl. Acad. Sci. USA 84, 1974–7.PubMedGoogle Scholar
  23. Mueller, L. D. (1988a) Density-dependent population growth and natural selection in food limited environments: theDrosophila model.Amer. Natur. 132, 786–809.CrossRefGoogle Scholar
  24. Mueller, L. D. (1988b) Evolution of competitive ability inDrosophila due to density-dependent natural selection.Proc. Natl. Acad. Sci. USA 85, 4383–6.PubMedGoogle Scholar
  25. Mueller, L. D. and Ayala, F. J. (1981). Trade-off betweenr-selection andK-selection inDrosophila populations.Proc. Natl. Acad. Sci. USA 78, 1303–5.Google Scholar
  26. Mueller, L. D. and Sweet, V. F. (1986) Density-dependent natural selection inDrosophila: evolution of pupation height.Evolution 40, 1354–6.Google Scholar
  27. Nunney, L. (1983) Sex differences in larval competition inDrosophila melanogaster: the testing of a competition model and its relevance to frequency dependent selection.Amer. Natur. 121, 67–93.CrossRefGoogle Scholar
  28. Rosenzweig, M. L. (1987) Community organization from the point of view of habitat selectors. InOrganization of Communities: Past and Present (J. H. R. Gee and P. S. Giller, eds) pp. 569–90. Blackwell Scientific Publications, Oxford, UK.Google Scholar
  29. Rougharden, J. (1971) Density dependent natural selection.Ecology 52, 453–68.Google Scholar
  30. Sewell, D., Burnet, B. and Connolly, K. (1975) Genetic analysis of larval feeding behavior inDrosophila melanogaster.Genet. Res. Camb. 24, 163–73.Google Scholar
  31. Slansky, F. and Feeny, P. (1977) Stabilization of the rate of nitrogen accumulation by larvae of the cabbage butterfly on wild and cultivated food plants.Ecol. Monogr. 47, 209–28.Google Scholar
  32. Wright, S. (1977)Evolution and the Genetics of Populations. Vol. 3: Experimental Results and Evolutionary Deductions. The University of Chicago Press, Chicago, Illinois, USA.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • Laurence D. Mueller
    • 1
  1. 1.Department of Ecology and Evolutionary BiologyUniversity of CaliforniaIrvineUSA

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