The evolutionary history ofDrosophila buzzatii. V. Differential survivorship onOpuntia betweenD. buzzatii andD. serido |
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| Authors: | A. Ruiz H. Naveira A. Fontdevila |
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| Affiliation: | (1) Departamento de Genética, Facultad de Ciencias, Universidad Autónoma de Barcelona, Bellaterra, Barcelona, Spain |
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| Abstract: | Summary Survival time ofDrosophila buzzatii adults on anOpuntia (prickly pear) medium was significantly longer than that of its nearest relativeD. serido. A significant difference was also found betweenD. buzzatii adults from two experimental populations, one of them fed onOpuntia rots for more than two years and another one kept on standardDrosophila medium for the same period of time. These results suggest that adult selection may be taking place in cactiphilicDrosophila in their natural habitats and could be responsible for the niche differentiation betweenD. buzzatii andD. serido.This work has been supported by the Comisión Asesora de investigación Científica y Técnica, Spain, by funds to project 4514/79 awarded to the third author. |
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| Keywords: | Drosophila buzzatii Drosophila serido Opuntia survivorship, differential feeding behavior niche differentiation Drosophila, cactiphilic |
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