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Mating system variation drives rapid evolution of the female transcriptome in Drosophila pseudoobscura

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ece31098.pdf (4.521Mb)
Date
06/2014
Author
Immonen, Elina
Snook, Rhonda R.
Ritchie, Michael Gordon
Funder
NERC
European Commission
Grant ID
NE/I014632/1
213780
Keywords
Drosophilia
Gene expression
Microarray
Polyandry
Sexual selection
QH301 Biology
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Abstract
Interactions between the sexes are believed to be a potent source of selection on sex-specific evolution. The way in which sexual interactions influence male investment is much studied, but effects on females are more poorly understood. To address this deficiency, we examined gene expression in virgin female Drosophila pseudoobscura following 100 generations of mating system manipulations in which we either elevated polyandry or enforced monandry. Gene expression evolution following mating system manipulation resulted in 14% of the transcriptome of virgin females being altered. Polyandrous females elevated expression of a greater number of genes normally enriched in ovaries and associated with mitosis and meiosis, which might reflect female investment into reproductive functions. Monandrous females showed a greater number of genes normally enriched for expression in somatic tissues, including the head and gut and associated with visual perception and metabolism, respectively. By comparing our data with a previous study of sex differences in gene expression in this species, we found that the majority of the genes that are differentially expressed between females of the selection treatments show female-biased expression in the wild-type population. A striking exception is genes associated with male-specific reproductive tissues (in D. melanogaster), which are upregulated in polyandrous females. Our results provide experimental evidence for a role of sex-specific selection arising from differing sexual interactions with males in promoting rapid evolution of the female transcriptome.
Citation
Immonen , E , Snook , R R & Ritchie , M G 2014 , ' Mating system variation drives rapid evolution of the female transcriptome in Drosophila pseudoobscura ' , Ecology and Evolution , vol. 4 , no. 11 , pp. 2186-2201 . https://doi.org/10.1002/ece3.1098
Publication
Ecology and Evolution
Status
Peer reviewed
DOI
https://doi.org/10.1002/ece3.1098
ISSN
2045-7758
Type
Journal article
Rights
© 2014 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Description
This research was part funded by the Natural Environment Research Council, Grant Number: NE/I014632/1. The APC was paid through RCUK open access block grant funds.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/4720

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