Light-dependent pupation site preferences in Drosophila. II. Drosophila melanogaster and Drosophila simulans.

作者: Melanie Manning , Therese Ann Markow

DOI: 10.1007/BF01065790

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摘要: Drosophila melanogaster prefers to pupate in the dark, while its sibling species,D. simulans, light when species are tested isolation and cultured together. Reciprocal interspecific hybridizations were carried out F1 individuals tested. Progeny from cross ofD. females withD. simulans males chose pupations sites exactly intermediate between those of two parental species, reciprocal-cross offspring preferred pupation sites. The site preferences (PSPs) hybrids compatible with a sex-linked locus or loci influencing light-dependent PSP this pair species. Examination larvae prior late third instar demonstrates that these preference highly specific, being restricted time just before pupation. During first larval instarsD. is quite photopositive whileD. comparatively photoneutral. These differences behavior could aid reducing competition

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