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ORIGINAL ARTICLE doi:10.1111/j.1558-5646.2009.00938.x
 

Summary: ORIGINAL ARTICLE
doi:10.1111/j.1558-5646.2009.00938.x
CONDITION-DEPENDENCE OF THE SEXUALLY
DIMORPHIC TRANSCRIPTOME IN DROSOPHILA
MELANOGASTER
Minyoung J. Wyman,1,2
Aneil F. Agrawal,1
and Locke Rowe1
1
Department of Ecology & Evolutionary Biology, University of Toronto, Toronto, Ontario, M5S 3B2, Canada
2
E-mail: minyoung.yi@utoronto.ca
Received June 22, 2009
Accepted November 24, 2009
Sexually dimorphic traits are by definition exaggerated in one sex, which may arise from a history of sex-specific selection--in
males, females, or both. If this exaggeration comes at a cost, exaggeration is expected to be greater in higher condition individuals
(condition-dependent). Although studies using small numbers of morphological traits are generally supportive, this prediction has
not been examined at a larger scale. We test this prediction across the transcriptome by determining the condition-dependence
of sex-biased (dimorphic) gene expression. We find that high-condition populations are more sexually dimorphic in transcription
than low-condition populations. High-condition populations have more male-biased genes and more female-biased genes, and a

  

Source: Agrawal, Aneil F. - Department of Ecology and Evolutionary Biology, University of Toronto

 

Collections: Environmental Sciences and Ecology