Title |
Adaptive plasticity in the mouse mandible
|
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Published in |
BMC Ecology and Evolution, April 2014
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DOI | 10.1186/1471-2148-14-85 |
Pubmed ID | |
Authors |
Philip SL Anderson, Sabrina Renaud, Emily J Rayfield |
Abstract |
Plasticity, i.e. non-heritable morphological variation, enables organisms to modify the shape of their skeletal tissues in response to varying environmental stimuli. Plastic variation may also allow individuals to survive in the face of new environmental conditions, enabling the evolution of heritable adaptive traits. However, it is uncertain whether such a plastic response of morphology constitutes an evolutionary adaption itself. Here we investigate whether shape differences due to plastic bone remodelling have functionally advantageous biomechanical consequences in mouse mandibles. Shape characteristics of mandibles from two groups of inbred laboratory mice fed either rodent pellets or ground pellets mixed with jelly were assessed using geometric morphometrics and mechanical advantage measurements of jaw adductor musculature. |
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