Sex-specific responses to cold in a very cold-tolerant, northern Drosophila species.

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State: Public
Version: Final published version
License: Not specified
Serval ID
serval:BIB_646B55DBD682
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Sex-specific responses to cold in a very cold-tolerant, northern Drosophila species.
Journal
Heredity
Author(s)
Parker D.J., Envall T., Ritchie M.G., Kankare M.
ISSN
1365-2540 (Electronic)
ISSN-L
0018-067X
Publication state
Published
Issued date
04/2021
Peer-reviewed
Oui
Volume
126
Number
4
Pages
695-705
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Organisms can plastically alter resource allocation in response to changing environmental factors. For example, in harsh conditions, organisms are expected to shift investment from reproduction toward survival; however, the factors and mechanisms that govern the magnitude of such shifts are relatively poorly studied. Here we compared the impact of cold on males and females of the highly cold-tolerant species Drosophila montana at the phenotypic and transcriptomic levels. Although both sexes showed similar changes in cold tolerance and gene expression in response to cold treatment, indicating that the majority of changes are concordant between the sexes, we identified a clear reduction in sexually dimorphic gene expression, suggesting that preparing for the colder season involves reducing investment in sex-specific traits. This reduction was larger in males than females, as expected if male sexual traits are more condition-dependent than female traits, as predicted by theory. Gene expression changes were primarily associated with shifts in metabolic profile, which likely play a role in increasing cold tolerance. Finally, we found that the expression of immune genes was reduced following cold treatment, suggesting that reduced investment in costly immune function may be important in helping flies survive colder periods.
Keywords
Animals, Cold Temperature, Drosophila/genetics, Female, Male, Phenotype, Reproduction, Sex Characteristics, Transcriptome
Pubmed
Web of science
Open Access
Yes
Create date
28/01/2021 15:05
Last modification date
09/11/2021 6:40
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