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The ontogeny and cost of migration in Drosophila subobscura Collin
- INGLESFIELD, C., BEGON, M.
- Biological journal of the Linnean Society 1983 v.19 no.1 pp. 9-15
- Drosophila subobscura, eclosion, fecundity, females, flight, males, migratory behavior, ontogeny
- The ontogeny of migratory potential of male and female Drosophila subobscura has been quantified using tethered flight in the laboratory. In both sexes there is an increase in the few days immediately after eclosion, and a decline before the flies cease reproductive activity. There is an intervening peak in the potential of males, which may result from an increased rejection-rate by inseminated females. The migratory potential generally appears greater than that usually utilized in the field. Such extended migration extracts a significant cost from female flies in terms of reduced fecundity.