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Reproductive performance and juvenile development in Common hamsters

In Common hamsters, we are carrying out a long-term study investigating effects of female reproductive effort and output on timing of subsequent seasonal processes, hibernation patterns and survival. Reproductive performance, foraging behaviour, changes in body mass and proportion of body fat (measured non-invasively) and hibernation patterns free-ranging Common hamsters in Vienna are recorded. As females can have up to three litters per season, birth date of juveniles range from early May to late August. We compare condition at vernal emergence, growth patterns, timing of puberty, reproductive activity and overwintering strategies in individuals depending on birth date and maternal investment (duration of lactation and common burrow use with the mother). 

Research focus:
Effects of previous reproductive output on overwintering strategies and reproductive performance in the subsequent season.

Comparison of growth patterns, timing of puberty, prehibernation condition and adrenal activity in juveniles born early and late in the season as well as juveniles of first and second litters of individual females.

Maternal investment (lactation duration, common burrow use with the litter) in first, second and third litters per season.

 Researcher: Eva Millesi, Carina Siutz

Department für Verhaltensbiologie
Universität Wien

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Letzte Änderung: 14.10.2016 - 12:48