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Adaptation to chronic nutritional stress in Drosophila| old_uid | 6824 |
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| title | Adaptation to chronic nutritional stress in Drosophila |
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| start_date | 2009/04/29 |
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| schedule | 10h |
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| online | no |
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| summary | Many animals have to get by with food of suboptimal quality. While
plastic responses to such chronic nutritional stress have been well
investigated, it is not clear how populations respond to selection
imposed by such stress over evolutionary time. We have been
studying the experimental evolution of replicated populations of
Drosophila melanogaster forced to develop over many generations
on a poor food. The results indicate that the flies had the genetic
potential to adapt to this nutritional stress, but analysis of correlated
responses revealed some surprising trade-offs. Preliminary analysis
of gene expression profiles suggests that the evolutionary response
cannot be predicted based on the plastic response |
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| responsibles | Lebreton |
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