In mammals, dispersal mostly takes place as juveniles or subadults before first reproduction. This so-called natal dispersal is usually sex-biased. Here we report dispersal distances and proportion of emigrants in three populations of Eurasian red squirrels (Sciurus vulgaris). Monitoring 32 males and 28 females, we showed that most squirrels emigrated and that proportions emigrants (69% males, 82% females) did not differ between the sexes. Also mean dispersal distance did not differ between males and females. Hence, there is no sex bias in the natal dispersal of red squirrels.
No sex bias in natal dispersal of Eurasian red squirrels.
WAUTERS, LUCAS ARMAND;PREATONI, DAMIANO;MARTINOLI, ADRIANO;
2011-01-01
Abstract
In mammals, dispersal mostly takes place as juveniles or subadults before first reproduction. This so-called natal dispersal is usually sex-biased. Here we report dispersal distances and proportion of emigrants in three populations of Eurasian red squirrels (Sciurus vulgaris). Monitoring 32 males and 28 females, we showed that most squirrels emigrated and that proportions emigrants (69% males, 82% females) did not differ between the sexes. Also mean dispersal distance did not differ between males and females. Hence, there is no sex bias in the natal dispersal of red squirrels.
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