Is Survival Selfish Lane Wallace Analysis Video
Is Survival Selfish? // Video Is Survival Selfish Lane Wallace Analysis
Mathur, V. Adaptive patterns of phenotypic plasticity in laboratory and field environments in Drosophila melanogaster. Evolution [Epub ahead of print]. PubMed ID: Summary: Identifying mechanisms of adaptation to variable environments is essential in developing a comprehensive understanding of evolutionary dynamics in natural populations.
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Phenotypic plasticity allows for phenotypic change in response to changes in the environment, and as such may play a major role in adaptation to environmental heterogeneity. This study examined the plasticity of stress response in D. Adults were given a short-term, 5-day exposure to combinations of temperature and photoperiod to elicit a plastic response for three fundamental aspects of stress tolerance that vary adaptively with geography.
This was replicated in both the laboratory and in outdoor enclosures in the field. In the laboratory, geographic origin was found to be the primary determinant of the stress response. Temperature and the interaction between temperature and photoperiod were also found to significantly affect stress resistance. In the outdoor enclosures, plasticity was distinct among traits and between geographic regions.
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These results demonstrate that short-term exposure of adults to ecologically relevant environmental cues results in predictable effects on multiple aspects of fitness. These patterns of plasticity vary among traits and are highly distinct between the two examined geographic regions, consistent with patterns of local adaptation to climate and associated environmental parameters. Robillard, E. Experimental evolution reveals hyperparasitic Wallade among transposable elements. Studying TEs' activity, interactions, and accumulation dynamics is thus of major interest to understand genome evolution.]
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