The Determinants of Optimal Litter Size in Free-Ranging Red Squirrels

Food availability, energetic ceilings, and life-history trade-offs have been proposed as potential determinants of offspring number in many animals. We investigated the role of these factors in determining litter size in a free-ranging population of red squirrels (Tamiasciurus hudsonicus). Long-term...

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Veröffentlicht in:	Ecology (Durham) 2000-10, Vol.81 (10), p.2867-2877
Hauptverfasser:	Humphries, Murray M., Boutin, Stan
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal and plant ecology Animal ecology Animal reproduction Animal, plant and microbial ecology Animals Autoecology Biological and medical sciences boreal forest (Yukon, Canada) Ecological life histories energy budgets Female animals field metabolic rate Food availability Food supply Fundamental and applied biological sciences. Psychology lactation life-history trade-offs limits to reproductive performance Litter size litter-size manipulations Mammalia Mammals offspring number, optimal red squirrels Reproduction reproductive effort, mammals reproductive energetics Sciuridae Tamiasciurus hudsonicus Squirrels Tamiasciurus hudsonicus Tradeoff analysis Vertebrata Young animals
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