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Environmental stressors alter relationships between physiology and behaviour
Shaun S Killen1, Stefano Marras, Neil B Metcalfe
1Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, Graham Kerr Building, University of Glasgow, G12 8QQ, Glasgow, UK.
Trends in Ecology & Evolution
|June 13, 2013
Summary
Environmental stressors significantly impact the link between animal traits, affecting how physiological and behavioral variations covary. Understanding these effects is crucial for predicting ecological and evolutionary responses to environmental change.
Area of Science:
- Ecology
- Animal Behavior
- Physiology
Background:
- Correlations between physiological and behavioral traits are common across animal species.
- The nature of these trait associations is known to vary considerably.
- Environmental factors are increasingly recognized as key modulators of these relationships.
Purpose of the Study:
- To investigate the role of environmental stressors in modulating covariation between physiological and behavioral traits in animals.
- To understand how stressors reveal, mask, or alter the observed associations between traits.
- To highlight the importance of considering environmental influences for ecological and evolutionary studies.
Main Methods:
- The study synthesizes existing research on trait covariation and environmental stress.
- It analyzes mechanisms by which stressors influence trait variation and phenotypic sensitivity.
- Focuses on how these effects manifest across different animal taxa.
Main Results:
- Environmental stressors are identified as a primary source of inconsistency in observed trait correlations.
- Stressors can alter trait variation and lead to differential sensitivity among phenotypes.
- These modulatory effects impact the strength and direction of physiological-behavioral covariation.
Conclusions:
- Environmental stressors play a critical role in shaping the covariation of physiological and behavioral traits in wild animals.
- Understanding stressor-mediated effects is essential for accurate ecological and evolutionary predictions.
- Further research is needed to elucidate causal mechanisms underlying these dynamic trait associations in the face of environmental change.
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