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Publikationstyp: Zeitschriftenaufsatz
Dokumenttyp: Originalarbeit

Jahr: 2018

AutorInnen: Mahlert, B; Gerritsmann, H; Stalder, G; Ruf, T; Zahariev, A; Blanc, S; Giroud, S

Titel: Implications of being born late in the active season for growth, fattening, torpor use, winter survival and fecundity.

Quelle: Elife. 2018; 7: e31225



Autor/innen der Vetmeduni Vienna:

Gerritsmann Hanno
Giroud Sylvain
Ruf Thomas
Stalder Gabrielle

Beteiligte Vetmed-Organisationseinheiten
Forschungsinstitut für Wildtierkunde und Ökologie


Zugehörige(s) Projekt(e): Mehrfach ungesättigte Fettsäuren, Winterschlaf und Alterung


Abstract:
For hibernators, being born late in the active season may have important effects on growth and fattening, hence on winter survival and reproduction. This study investigated differences in growth, fattening, energetic responses, winter survival and fecundity between early-born ('EB') and late-born ('LB') juvenile garden dormice (Eliomys quercinus). LB juveniles grew and gained mass twice as fast as EB individuals. Torpor use was low during intensive growth, that are, first weeks of body mass gain, but increased during pre-hibernation fattening. LB juveniles showed higher torpor use, reached similar body sizes but lower fat content than EB individuals before hibernation. Finally, LB individuals showed similar patterns of hibernation, but higher proportion of breeders during the following year than EB dormice. These results suggest that torpor is incompatible with growth but promotes fattening and consolidates pre-hibernation fat depots. In garden dormice, being born late in the reproductive season is associated with a fast life history.© 2018, Mahlert et al.

Keywords Pubmed: Animals
Fertility
Hibernation
Myoxidaegrowth & developmentphysiology
Seasons
Survival
Time Factors
Torpor
Weight Gain

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