In the literature, litter size in red squirrels Sciurus vulgaris ranges between 1-6 offspring. Here we report a record litter size, in Europe, of 7 young (6 males, 1 female), marked in the nest when 10-14 days old, in a high-elevation mountain pine habitat, Lombardy Alps (Northern Italy). We discuss implications of extreme winter conditions for lifehistory strategies and possible trade-offs between high reproductive investment and short life-span.
Record litter size in the Eurasian red squirrel (Sciurus vulgaris) / V. Mari, S. Martini, C. Romeo, A. Molinari, A. Martinoli, G. Tosi, L.A. Wauters. - In: HYSTRIX. - ISSN 0394-1914. - 19:1(2008), pp. 62-65.
Record litter size in the Eurasian red squirrel (Sciurus vulgaris)
C. Romeo;
2008
Abstract
In the literature, litter size in red squirrels Sciurus vulgaris ranges between 1-6 offspring. Here we report a record litter size, in Europe, of 7 young (6 males, 1 female), marked in the nest when 10-14 days old, in a high-elevation mountain pine habitat, Lombardy Alps (Northern Italy). We discuss implications of extreme winter conditions for lifehistory strategies and possible trade-offs between high reproductive investment and short life-span.
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