01097nas a2200169 4500008004100000022001300041245010400054210006900158260001600227300001400243490000700257520054200264100002100806700001800827700001600845856006600861 1987 eng d a0003347200aMale size and mating success in Drosophila melanogaster and D. pseudoobscura under field conditions0 aMale size and mating success in Drosophila melanogaster and D ps cJan-04-1987 a468 - 4760 v353 a

Wild mating male D. melanogaster and D. pseudoobscura were larger than randomly sampled males. That this was due to size and not a confounding effect of age was confirmed by release experiments with D. melanogaster of standard age; larger males were at a mating advantage with virgin and inseminated females. In both species larger males delivered more courtship and in D. pseudoobscura they won more aggressive encounters. These results on Drosophila in the field confirm and extend those previously obtained in the laboratory.

1 aPartridge, Linda1 aHoffmann, Ary1 aJones, J.S. uhttp://linkinghub.elsevier.com/retrieve/pii/S000334728780272502200nas a2200241 4500008004100000022001400041245012500055210006900180260001600249520138400265653001801649653002401667653002001691653001001711653001401721100002601735700002101761700002101782700002301803700001801826700002001844856009401864 2018 eng d a0024-406600aRapid divergence of courtship song in the face of neutral genetic homogeneity in the cactophilic fly Drosophila buzzatii0 aRapid divergence of courtship song in the face of neutral geneti cJan-08-20193 a

A wide spectrum of song complexity has been documented in a broad range of animal taxa. However, the underlying processes shaping acoustic differences are still poorly understood. Empirical and theoretical studies suggest that different song parameters may be subject to different tempos and modes of evolution, resulting in a complex combination of stabilizing and directional selection that change among populations and through time. Nonetheless, the contribution of genetic drift to acoustic divergence is largely unexplored. In this study, we used the QST–FST approach to investigate the relative role of selective and neutral processes in the evolution of courtship song in the cactophilic fly Drosophila buzzatii. We quantified variation in courtship song among 12 populations using flies reared under common-garden conditions. We found among-population divergence in courtship song parameters, but genetic homogeneity and no population structure. Using both mitochondrial DNA and microsatellite markers, we found evidence consistent with a role for directional selection causing song divergence. We discuss the statistical difficulties of detecting stabilizing selection as opposed to directional selection in our data. The role of song parameters in mate recognition and mate choice, and the role of sexual selection in song elaboration are also discussed.

10acommon-garden10adivergent selection10amicrosatellites10amtDNA10aQST–FST1 aIglesias, Patricia, P1 aSoto, Ignacio, M1 aSoto, Eduardo, M1 aCalderón, Luciano1 aHurtado, Juan1 aHasson, Esteban uhttps://academic.oup.com/biolinnean/advance-article/doi/10.1093/biolinnean/bly108/507311701933nas a2200265 4500008004100000022001300041245006000054210005900114260001600173300001400189490000800203520114200211653001901353653002901372653002701401653002401428653001601452653002201468653002101490100001901511700002401530700002501554700002201579856006601601 2017 eng d a0003347200aMate choice intensifies motor signalling in Drosophila0 aMate choice intensifies motor signalling in Drosophila cJan-11-2017 a169 - 1870 v1333 a

Mate choice has the potential to act on the evolution of motor performance via its direct influence on motor sexual signals. However, studies demonstrating this are rare. Here, we performed an in-depth analysis of Drosophila pseudoobscura courtship song rate, a motor signal under mate choice in this species, and analysed the response of this signal to sexual selection manipulation using experimental evolution. We show that manipulating the opportunity for sexual selection led to changes in song production rate and singing endurance, with males from the polyandrous populations producing faster song rates over longer time periods than males from monogamous populations. We also show that song rate was correlated with estimates of overall courtship vigour. Our results suggest that the action of mate choice on a motor signal has affected male motor performance displayed during courtship. We consider potential selective benefits associated with changes in motor performance, including condition- dependent signalling, and discuss the implications of these results for the study of motor signals un- der sexual selection.

10acourtship song10aDrosophila pseudoobscura10aexperimental evolution10ainterpulse interval10amate choice10amotor performance10asexual selection1 aDebelle, Allan1 aCourtiol, Alexandre1 aRitchie, Michael, G.1 aSnook, Rhonda, R. uhttp://linkinghub.elsevier.com/retrieve/pii/S000334721730301901379nas a2200157 4500008004100000022001400041245009000055210006900145260001600214300001400230490000800244520087700252100002501129700001401154856005301168 1978 eng d a0028-083600aRegularity versus irregularity in specific songs of closely-related drosophilid flies0 aRegularity versus irregularity in specific songs of closelyrelat cFeb-02-1978 a442 - 4440 v2713 a

The songs of most insect species are stereotyped and show regular rhythms which can be readily defined and described. In such cases, closely related species produce songs which differ in rhythmic structure, carrier frequency, or combinations of these parameters. We have examined the songs produced during courtship of the sibling drosophilid fly species Zaprionus tuberculatus, Z. sepsoides and Z. mascariensis which are known from morphometric and chromosomal evidence to be closely related. Drosophilid songs are produced by wing beating and normally consist of a regular series of similar mono- or polycyclic sound pulses with carrier frequencies of 150 to 500 Hz and pulse periods of 8 to 250 ms (for review, see ref. 9). Some species produce more than one type of song, and the pulsed song may be interrupted by protracted bursts of constant frequency tone.

1 aBennet-Clark, H., C.1 aLeroy, Y. uhttp://www.nature.com/doifinder/10.1038/271442a001184nas a2200145 4500008004100000022001400041245006300055210006200118260001300180300000900193490000600202520076400208100002500972856004100997 1990 eng d a0169-534700aDo the song pulses of Drosophila show cyclic fluctuations?0 aDo the song pulses of Drosophila show cyclic fluctuations c1990 Mar a93-70 v53 a

Following analysis of the song of two Drosophila species, Kyriacou and Hall in 1980 described a rhythmic variation in the intervals between sound pulses. This rhythmicity was species specific and various mutants also showed characteristic song-period rhythmicity. Recent attempts by Ewing and by Crossley to confirm the existence of the rhythms, using essentially similar methods, have failed; Kyriacou and Hall have since ascribed these failures to differences in technique and methods of measurement between them and their critics, and re-affirm that the rhythmicity they described exists. In view of the controversy surrounding the existence of song-period rhythmicity, a body of work on the genetics of this behaviour must be viewed with caution.

1 aBennet-Clark, H., C. uhttps://bio.acousti.ca/it/node/17211