The Journal of the Acoustical Society of America, 2009
ABSTRACT Acoustic analyses of the courtship songs of the suzukii and takahashii subgroups in the ... more ABSTRACT Acoustic analyses of the courtship songs of the suzukii and takahashii subgroups in the Drosophila melanogaster species group were conducted. The primary and secondary pulse phases that are common in the melanogaster subgroup were not observed in these two subgroups. However, two undocumented sound patterns were discovered. D. biarmipes and D. pulchrella (suzukii subgroup) produce high amplitude, nonrhythmic "toot" sounds, which range from 82-158 ms in duration. The toot sound in D. biarmipes has a consistent dynamic frequency profile. It starts with an onset of 479 Hz and gradually falls to 422 Hz and then rises to 477 Hz. The toot sound in D. pulchrella has a significantly lower frequency when compared to D. biarmipes. Its frequency profile falls gradually from 352-259 Hz. In addition, a "turbo" sound was recorded in D. prostipennis (takahashii subgroup). It is composed of short, high frequency pulses (520 Hz) with 4 ms interpulse intervals. In the melanogaster subgroup, the parameters of pulses have been proposed to play an important role in female preference. The results of the present study suggest that there might be other parameters at play in the species investigated in the current study.
We have performed DNA-DNA hybridization experiments among several species of Drosophila using the... more We have performed DNA-DNA hybridization experiments among several species of Drosophila using the evolutionarily conserved portion of the genome representing sequences coding for amino acids of proteins. This was done by using as tracer, radioactively labeled complementary DNA that was reverse transcribed from adult mRNA. We show that this procedure extends phylogenetically the distance over which the technique can be applied to fast-evolving groups such as Drosophila. The major phylogenetic conclusions are (1) the subgenus Sophophora is a monophyletic lineage; (2) within Sophophora the melanogaster subgroup is closer to the obscura group than either group is to the willistoni group; (3) the subgenus Drosophila is complex with most major lineages originating deep in the phylogeny; the subgenus may not be monophyletic; (4) as with most groups classically placed in Drosophila, the Hawaiian Drosophila originate early, supporting the notion that this lineage is older than the extant islands; and (5) the virilis/repleta lineage is monophyletic within Drosophila.
Reproductive isolation increases with genetic distance between species. Although sexual selection... more Reproductive isolation increases with genetic distance between species. Although sexual selection may drive divergence of sexual signals and traits, causing rapid evolution of sexual isolation, quantitative data supporting this idea are rare. We examine the rates of ...
... to the published D. yakuba sequence except for one T/C difference, we used a polymorphic char... more ... to the published D. yakuba sequence except for one T/C difference, we used a polymorphic character (Y ... PHYLOGENY OF THE DROSOPHILA OBSCURA GROUP ... The melanogaster group retained the ancestral distribution while another lineage became adapted to tem-perate ...
... 3Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Co... more ... 3Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06520-8106 4E-mail: jeffrey.powell@yale.edu ... Atlixco wilA Atlixco, Mexico E Ayala U51055 U95255 A57 wilA5 Aguas do los Rios, Brazil J. Powell U95254 ...
The Journal of the Acoustical Society of America, 2009
ABSTRACT Acoustic analyses of the courtship songs of the suzukii and takahashii subgroups in the ... more ABSTRACT Acoustic analyses of the courtship songs of the suzukii and takahashii subgroups in the Drosophila melanogaster species group were conducted. The primary and secondary pulse phases that are common in the melanogaster subgroup were not observed in these two subgroups. However, two undocumented sound patterns were discovered. D. biarmipes and D. pulchrella (suzukii subgroup) produce high amplitude, nonrhythmic "toot" sounds, which range from 82-158 ms in duration. The toot sound in D. biarmipes has a consistent dynamic frequency profile. It starts with an onset of 479 Hz and gradually falls to 422 Hz and then rises to 477 Hz. The toot sound in D. pulchrella has a significantly lower frequency when compared to D. biarmipes. Its frequency profile falls gradually from 352-259 Hz. In addition, a "turbo" sound was recorded in D. prostipennis (takahashii subgroup). It is composed of short, high frequency pulses (520 Hz) with 4 ms interpulse intervals. In the melanogaster subgroup, the parameters of pulses have been proposed to play an important role in female preference. The results of the present study suggest that there might be other parameters at play in the species investigated in the current study.
We have performed DNA-DNA hybridization experiments among several species of Drosophila using the... more We have performed DNA-DNA hybridization experiments among several species of Drosophila using the evolutionarily conserved portion of the genome representing sequences coding for amino acids of proteins. This was done by using as tracer, radioactively labeled complementary DNA that was reverse transcribed from adult mRNA. We show that this procedure extends phylogenetically the distance over which the technique can be applied to fast-evolving groups such as Drosophila. The major phylogenetic conclusions are (1) the subgenus Sophophora is a monophyletic lineage; (2) within Sophophora the melanogaster subgroup is closer to the obscura group than either group is to the willistoni group; (3) the subgenus Drosophila is complex with most major lineages originating deep in the phylogeny; the subgenus may not be monophyletic; (4) as with most groups classically placed in Drosophila, the Hawaiian Drosophila originate early, supporting the notion that this lineage is older than the extant islands; and (5) the virilis/repleta lineage is monophyletic within Drosophila.
Reproductive isolation increases with genetic distance between species. Although sexual selection... more Reproductive isolation increases with genetic distance between species. Although sexual selection may drive divergence of sexual signals and traits, causing rapid evolution of sexual isolation, quantitative data supporting this idea are rare. We examine the rates of ...
... to the published D. yakuba sequence except for one T/C difference, we used a polymorphic char... more ... to the published D. yakuba sequence except for one T/C difference, we used a polymorphic character (Y ... PHYLOGENY OF THE DROSOPHILA OBSCURA GROUP ... The melanogaster group retained the ancestral distribution while another lineage became adapted to tem-perate ...
... 3Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Co... more ... 3Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06520-8106 4E-mail: jeffrey.powell@yale.edu ... Atlixco wilA Atlixco, Mexico E Ayala U51055 U95255 A57 wilA5 Aguas do los Rios, Brazil J. Powell U95254 ...
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