Evolutionary Ecology of Mammalian Hibernation Phenology

Chapter

Abstract

Hibernation is assumed to have evolved in response to environmental energy and/or water shortages, yet the environment in which it has most often been studied is the laboratory. Our understanding of the ecological and evolutionary significance of natural hibernation expression thus lags behind the impressive body of work that has been done on its physiological and biochemical mechanisms. In this chapter, I review studies that have been done on phenological variation in wild populations and argue for a tightened focus on individual variation. Climate change is altering temporal resource distributions worldwide and the impact that this may have on populations will depend on their ability to adjust their phenologies through phenotypic plasticity and/or microevolution. Making predictions regarding these two phenomena requires detailed information on the environmental and genetic contributions to, and the fitness consequences of, phenological variation. I describe each of these components, in turn, and briefly explain the analytical procedures used to calculate them. Although, to date, empirical information of this sort is relatively sparse for wild hibernators, recent studies have begun to provide it and the theoretical and analytical tools with which to undertake further study are becoming increasingly accessible. Through their application, a more thorough understanding of the role hibernation plays in the natural ecology of mammalian populations, and how these populations may be affected by climate change should be attainable.

Keywords

Phenotypic Plasticity Torpor Bout Phenological Trait Circannual Rhythm Phenological Variation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

My research on hibernation phenology has been supported by the Royal Society of London and the Alberta Conservation Society, as well as, grants from the Agence Nationale de la Recherche of France (to Anne Charmantier) and the Natural Science and Engineering Research Council of Canada (to Stan Boutin).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of Biological SciencesUniversity of AlbertaEdmontonCanada

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