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Article Excerpt ABSTRACT. During the summers of 2000 through 2006, I counted arctic wolf (Canis lupus arctos) pups and adults in a pack, arctic hares (Lepus arcticus) along a 9 km index route in the area, and muskoxen (Ovibos moschatus) in a 250 [km.sup.2] part of the area near Eureka (80[degrees] N, 86[degrees] W), Ellesmere Island, Nunavut, Canada. Adult wolf numbers did not correlate with muskox numbers, but they were positively related ([r.sup.2] = 0.89; p < 0.01) to an arctic hare index. This is the first report relating wolf numbers to non-ungulate prey.
Key words: arctic hare, Lepus arcticus, wolf, Canis lupus arctos, Ellesmere Island, muskoxen, Ovibos moschatus, population dynamics, predator-prey relations, predation
RESUME. Pendant les etes 2000 a 2006, j'ai compte les jeunes loups arctiques et les adultes (Canis lupus arctos) d'une bande, les lievres arctiques (Lepus arcticus) le long d'une route indexee de 9 km dans la region, et les boeufs musques (Ovibos moschatus) dans une zone de 250 [km.sup.2] pres d'Eureka (80[degrees] N, 86[degrees] O), sur l'ile d'Ellesmere, au Nunavut, Canada. Le nombre de loups adultes ne correlait pas avec le nombre de boeufs musques, mais il etait relie de maniere positive ([r.sup.2] = 0,89; p < 0,01) a un index de lievres arctiques. Il s'agit du premier rapport etablissant un lien entre le nombre de loups et des proies non ongulees.
Mots cles: lievre arctique, Lepus arcticus, loup, Canis lupus arctos, ile d'Ellesmere, boeufs musques, Ovibos moschatus, dynamique de la population, relations predateur-proie, predation
Traduit pour la revue Arctic par Nicole Giguere.
INTRODUCTION
An important question in the field of wolf-prey relations is what factor or factors determine the trajectory of a wolf population (Fuller et al., 2003). Conceptually, biomass of vulnerable prey was...
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