Idiosyncratic evolution of maternal effects in response to juvenile malnutrition in Drosophila.

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Version: Final published version
Serval ID
serval:BIB_380E8600D809
Type
Article: article from journal or magazin.
Collection
Publications
Title
Idiosyncratic evolution of maternal effects in response to juvenile malnutrition in Drosophila.
Journal
Journal of Evolutionary Biology
Author(s)
Vijendravarma R.K., Kawecki T.J.
ISSN
1420-9101 (Electronic)
ISSN-L
1010-061X
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
28
Number
4
Pages
876-884
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Maternal effects often affect fitness traits, but there is little experimental evidence pertaining to their contribution to response to selection imposed by novel environments. We studied the evolution of maternal effects in Drosophila populations selected for tolerance to chronic larval malnutrition. To this end, we performed pairwise reciprocal F1 crosses between six selected (malnutrition tolerant) populations and six unselected control populations and assessed the effect of cross direction on larval growth and developmental rate, adult weight and egg-to-adult viability expressed under the malnutrition regime. Each pair of reciprocal crosses revealed large maternal effects (possibly including cytoplasmic genetic effects) on at least one trait, but the magnitude, sign and which traits were affected varied among populations. Thus, maternal effects contributed significantly to the response to selection imposed by the malnutrition regime, but these changes were idiosyncratic, suggesting a rugged adaptive landscape. Furthermore, although the selected populations evolved both faster growth and higher viability, the maternal effects on growth rate and viability were negatively correlated across populations. Thus, genes mediating maternal effects can evolve to partially counteract the response to selection mediated by the effects of alleles on their own carriers' phenotype, and maternal effects may contribute to evolutionary trade-offs between components of offspring fitness.
Keywords
Animal Nutritional Physiological Phenomena, Animals, Biological Evolution, Body Weight/genetics, Crosses, Genetic, Drosophila/growth & development, Drosophila/physiology, Female, Larva/physiology, Male, Malnutrition, Stress, Physiological
Pubmed
Web of science
Create date
20/04/2015 14:59
Last modification date
20/08/2019 14:26
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