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Transcriptional profiling of Drosophila melanogaster heads from experimentally-evolved populations

ABSTRACT: We used RNA sequencing to examine the transcriptomes of male and female heads from experimentally-evolved D. melanogaster populations after 117 generations of mating system manipulation in order to examine the pattern of evolution in sex-biased genes.

ORGANISM(S): Drosophila melanogaster

PROVIDER: GSE50915 | GEO | 2014/03/17

SECONDARY ACCESSION(S): PRJNA219362

REPOSITORIES: GEO

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Transcriptional profiling of Drosophila melanogaster heads from experimentally-evolved populations

Project description:We used RNA sequencing to examine the transcriptomes of male and female heads from experimentally-evolved D. melanogaster populations after 117 generations of mating system manipulation in order to examine the pattern of evolution in sex-biased genes. Examined head transcriptomes of 3 monogamous populations and 3 polygamous populations, both males and females, for 12 total samples.

2014-03-17 | E-GEOD-50915 | biostudies-arrayexpress

Gene expression divergence in experimentally evolved Drosophila pseudoobscura females

Project description:We used experimentally evolved Drosophila pseudoobscura females, who have experienced either enforced monogamy or increased polyandry for 100 generations, to assess divergence in their transcriptomic response to both mating system variation and mating experience.

2015-01-01 | GSE35410 | GEO

Experimentally-evolved male effects on female gene expression in the head and abdomen

Project description:We measured gene expression of D. melanogaster female heads and abdomens after mating with males from six populations evolved under either enforced monogamy (no male-male competition, 3 populations) or sustained polygamy (intense male-male competition, 3 populations).

2019-03-28 | GSE128403 | GEO

Post-mating expression of female Drosophila melanogaster genomes experimentally evolved under different post-copulatory sexual selection regimes

Project description:By combining an experimental evolution approach with genomic techniques, we investigated the effects of seminal fluid on female gene expression. In our study, we experimentally manipulated the mating system in replicate populations of D. melanogaster, by removing post-copulatory sexual selection, with the aim of testing differences in short term post-mating reaction of females evolved under different mating strategies. We show that monogamous females suffer decreased fecundity, regardless of the type of male they were mated with, and that their post-mating gene expression profiles differ significantly from promiscuous females, involving 1141 transcripts (9% of the genes tested). These transcripts are active in several tissues, mainly ovaries, neural tissues, midgut and spermathecae, and are involved in metabolic processes, reproduction and signaling pathways. Our results provide a list of candidate genes responsible for the decrease in female fecundity in the absence of post-copulatory sexual selection, and demonstrate how the female post-mating response can evolve under different mating systems over relatively short time frames. From an LHM base population, we created 8 replicate populations and maintained them under experimental evolution: 4 populations were allowed to mate only once every generation (monogamy), and the other 4 were kept under the standard mating protocol (promiscuous). After 46 generations, we crossed males and females within the same population and with individuals of the opposite treatment. Mated female flies were frozen 6 h after mating and RNA extracted. Two biological replicates per cross per population (2x2x8=32 samples).

2014-01-01 | E-GEOD-48385 | biostudies-arrayexpress

Post-mating expression of female D. melanogaster genomes experimentally evolved under different post-copulatory sexual selection regimes

2014-01-15 | GSE30089 | GEO

Post-mating expression of female Drosophila melanogaster genomes experimentally evolved under different post-copulatory sexual selection regimes

2014-01-01 | GSE48385 | GEO

Post-mating expression of female D. melanogaster genomes experimentally evolved under different post-copulatory sexual selection regimes

Project description:By combining an experimental evolution approach with genomic techniques, we investigated the effects of seminal fluid on female gene expression. In our study, we experimentally manipulated the mating system in replicate populations of D. melanogaster, by removing post-copulatory sexual selection, with the aim of testing differences in short term post-mating reaction of females evolved under different mating strategies. We show that monogamous females suffer decreased fecundity, regardless of the type of male they were mated with, and that their post-mating gene expression profiles differ significantly from promiscuous females, involving 1141 transcripts (9% of the genes tested). These transcripts are active in several tissues, mainly ovaries, neural tissues, midgut and spermathecae, and are involved in metabolic processes, reproduction and signaling pathways. Our results provide a list of candidate genes responsible for the decrease in female fecundity in the absence of post-copulatory sexual selection, and demonstrate how the female post-mating response can evolve under different mating systems over relatively short time frames. From a LHM base population, we created 8 replicate populations and maintained them under experimental evolution: 4 populations were allowed to mate only once every generation (monogamy), and the other 4 were kept under the standard mating protocol (promiscuous). After 46 generation, we crossed males and females within the same population and with individuals of the opposite treatment. Mated female flies were frozen 6 h after mating and RNA extracted. Two biological replicates per cross per population (2x2x8=32 samples).

2014-01-15 | E-GEOD-30089 | biostudies-arrayexpress

Whole genome sequencing of experimentally evolved D. melanogaster populations with 4xBicoid

Project description:EMS-mutagenized D. melanogaster populations with 4xbicoid were sequenced at the 1st, 3rd, 7th, 9th and 15th generation to analyze genomic changes during experimental evolution. Non-mutagenized populations were sequenced in parallel, representing standing variations.

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heads only

Project description:heads only

| PRJNA87985 | ENA

Population-based resequencing of experimentally evolved populations reveals the genetic basis of body size variation in Drosophila melanogaster.

Project description:Body size is a classic quantitative trait with evolutionarily significant variation within many species. Locating the alleles responsible for this variation would help understand the maintenance of variation in body size in particular, as well as quantitative traits in general. However, successful genome-wide association of genotype and phenotype may require very large sample sizes if alleles have low population frequencies or modest effects. As a complementary approach, we propose that population-based resequencing of experimentally evolved populations allows for considerable power to map functional variation. Here, we use this technique to investigate the genetic basis of natural variation in body size in Drosophila melanogaster. Significant differentiation of hundreds of loci in replicate selection populations supports the hypothesis that the genetic basis of body size variation is very polygenic in D. melanogaster. Significantly differentiated variants are limited to single genes at some loci, allowing precise hypotheses to be formed regarding causal polymorphisms, while other significant regions are large and contain many genes. By using significantly associated polymorphisms as a priori candidates in follow-up studies, these data are expected to provide considerable power to determine the genetic basis of natural variation in body size.

| S-EPMC3060078 | biostudies-literature

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