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DEPE | Séminaires BEEPSS / BEEPSS Seminars » Rediscovering an old phenomenon: individual shrinking and regrowth as a (...)

Rediscovering an old phenomenon: individual shrinking and regrowth as a winter adaption in high-metabolic mammals

Last update: : Wednesday 8 February 2017, by Nicolas Busser

Par : Dina Dechmann, MPI Radolfszell
Date : jeudi 6 avril 2017 de 16h à 17h30
Lieu : IPHC, Amphithéâtre Grünewald, bâtiment 25

Skull and body size usually don’t change anymore in fully-grown animals. Red-toothed shrews are a notable exception: they shrink in anticipation of the winter and regrow in preparation for reproduction - this includes mass, the skull, the brain and several other major organs. Our ongoing study has documented this change with longitudinal data from recaptured individuals and describes correlated changes in neuroanatomy, bone and behavior. Astonishingly we also find this phenomenon in weasels and other mustelids, which share many life history traits, especially an exceedingly high metabolism, as well as the hedgehog. Thus, this study is not only important for our understanding of evolution, but also has profound implications for medical research.

http://www.orn.mpg.de/641895/Sociality-and-Movement