|Citation||Huttunen, S., Aspi, J., Schlötterer, C., Routtu, J., Hoikkala, A. (2008). Variation in male courtship song traits in Drosophila virilis: the effects of selection and drift on song divergence at the intraspecific level. Behav. Genet. 38(1): 82--92. (Export to RIS)|
|Publication Type||Research paper|
|PubMed Abstract||Genetic and phenotypic divergence of Drosophila virilis laboratory strains originating from different parts of the species range were studied with the aid of microsatellite markers and by analysing male courtship songs. The strains from America, Europe, continental Asia and Japan showed moderate geographic clustering both at the genetic level and in several traits of the male song. The genetic distances and the song divergence of the strains did not show significant association, which suggests that the songs have not diverged solely as a side-effect of genetic divergence. Comparison of the songs of the laboratory strains to those of freshly collected strains showed that pulse characters of the song are quite sensitive to culture conditions. While laboratory rearing of the flies had no effect on the number of pulses in a pulse train or the pulse train length, the tendency of the sound pulses to become longer during laboratory maintenance could explain the lack of geographic variation in pulse length and inter pulse interval. Sensitivity of songs to culturing conditions should be taken in account in studies on song divergence.|
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|Language of Publication||English|
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