| Oviposition site selection plays a central role in the evolutionary ecology of Drosophila, due to its high relation with the pre-adults fitness since the site selection determines the interactions between the species sharing common resources. Drosophila subobscura Collin which was detected in Chile for the first time in 1978, was found coexisting in the wild, as adults, over apple and raspberry, with D. hydei, D. immigrans and D. melanogaster. It was observed that raspberry has been used only by Drosophila subobscura as a breeding site; meanwhile sharing apple with the others. Our principal purpose was to shed light on the ecological significance of the new species oviposition behaviour; analysing also some of the preference-performance relationship. Two... |
