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Lack of minority advantage in Drosophila melanogaster mutants

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The objective of this study was to test the generality of frequency-dependent fitness in the mating behavior of Drosophila, called the minority effect and to investigate the effect of artificial olfactory cues and marking the flies by wing cillipng on the frequency-dependent mate choice. | Tr. J. of Biology 23 (1999) 433–443 © TÜBİTAK Lack of Minority Advantage in Drosophila melanogaster Mutants Şükran ÇAKIR Ankara University, Faculty of Veterinary (Genetics) 06110 Ankara-TURKEY Aykut KENCE Middle East Technical University, Biology Department, 06531 Ankara-TURKEY Received: 30.03.1998 Abstract:The objective of this study was to test the generality of frequency-dependent fitness in the mating behavior of Drosophila, called the minority effect and to investigate the effect of artificial olfactory cues and marking the flies by wing cillipng on the frequency-dependent mate choice. In the mating experiments using wild type (oregon) and mutant (white-eyed, sepia, ebony) strains of Drosophila melanogaster, the mating success of mutant males did not increase as their frequency decreased. In addition, the olfactory cue hypothesis was not supported by the results of the experiments with artificial scent. The results of this study did not support the contention that rareale advantage is a general phenomenon. Therefore raremale advantage is probably not an important factor maintaining genetic variation in natural populations of Drosophila. Key Words: Drosophila, minority advantage, artificial scent, wing clipping. Drosophila melanogaster Mutantlarında Azınlık Avantajının Yokluğu Özet: Bu çalışmanın amacı Drosophila’nın eşeysel davranışlarında azınlık etkisi adı verilen frekansa bağlı uyumun genelliğini sınamak, yapay koku sinyallerinin ve sinekleri kanat keserek işaretlemenin frekansa bağlı eş seçimi üzerindeki etkilerini araştırmaktı. Drosophila’nın normal (oregon) ve mutant (whiteeyed, sepia, ebony) soyları arasında yapılan deneylerde mutant erkeklerin çiftleşme başarısı frekansları azaldığında artmadı. Ayrıca, yapay koku kullanılarak yapılan deney sonuçları koku sinyalleri hipotezini desteklemedi. Bu çalışmanın sonuçları azınlık erkek avantajının genel bir olgu olduğu savını desteklemedi. Dolayısıyle azınlık etkisi Drosophila toplumlarında genetik .

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