Sexual behavior in laboratory strains ofDrosophila mercatorum that have spontaneously adopted parthenogenesis
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Three instances are described in which bisexual laboratory strains spontaneously adopted an exclusively parthenogenetic mode of reproduction, even in the presence of fertile, bisexual males. The few males produced by the parthenogenetic strains lack a Y chromosome and are sterile but, nevertheless, showed no correlated impairment of normal mating behavior. In contrast, females show a strong reluctance to accept copulation. This behavioral correlate of parthenogenesis also has been observed previously in experimentally produced parthenogenetic lines. We suggest that genetic breakdown in female mating behavior may contribute to an evolutionary stimulus that results in a selective increase in the frequency of diploidizing events in unfertilized eggs. This ultimately might lead to the origin of an exclusively parthenogenetic reproductive mode.
Key Wordssexual behavior sexual selection origin of parthenogenesis Drosophila
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- Carson, H. L. (1991). Fitness and the sexual environment. In Spencer, H. G., and Masters, J. (eds.),Essays in Honor of H. E. H. Paterson, Sinauer Press, Sunderland, Mass. (in press).Google Scholar
- Carson, H. L., and Snyder, S. H. (1972). Screening by parthenogenesis for induced mutations inDrosophila mercatorum.Egypt. J. Genet. Cytol. 1:256–261.Google Scholar
- Carson, H. L., Chang, L. S., and Lyttle, T. W. (1982). Decay of female sexual behavior under parthenogenesis.Science 218:68–70.Google Scholar
- Connolly, K., Burnet, B., and Sewell, D. (1969). Selective mating and eye pigmentation: An analysis of the visual component in the courtship behavior ofDrosophila melanogaster.Evolution 23:548–559.Google Scholar
- Eberhard, W. G. (1985).Sexual Selection and Animal Genitalia, Harvard University Press, Cambridge, Mass.Google Scholar
- Elens, A. A., and Wattiaux, J. M. (1964). Direct observation of sexual isolation.Dros. Inf. Serv. 39:118–119.Google Scholar
- Henslee, E. D. (1966). Sexual isolation in a parthenogenetic strain ofDrosophila mercatorum.Am. Nat. 100:191–197.Google Scholar
- Ikeda, H., and Maruo, O. (1982). Directional selection for pulse repetition rate of the courtship sound and correlated responses occurring in several characters inDrosophila mercatorum.Jpn. J. Genet. 57:241–258.Google Scholar
- Safir, S. R. (1921). Genetic and cytological examination of the phenomena of primary non-disjunction inDrosophila melanogaster.Genetics 5:459–487.Google Scholar
- Stalker, H. D. (1956). On the evolution of parthenogenesis in Lonchoptera (Diptera).Evolution 10:354–359.Google Scholar
- Sturtevant, A. H. (1915). Experiments on recognition and the problem of sexual selection inDrosophila.J. Anim. Behav. 5:351–356.Google Scholar