Studies on the Helminth Fauna of Alaska. XXXIV. The Parasites of Wolves, Canis lupus L.

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Abstract
Two hundred wolves, Canis lupus Linnaeus, were examined for helminth parasites in Alaska over a period of 10 years. Most of the animals (162) were killed in the central Brooks Range region of Arctic Alaska. Eight species of helminths were identified Taenia hydatigena Pallas, 1776; T. krabbei Moniez, 1879; T. multiceps Leske, 1780; Echinococcus granulosus (Batsch, 1786); Alaria canis LaRue and Fallis, 1936; Trichinella spiralis (Owen, 1835); Uncinaria stenocephala (Railliet, 1884); Toxascaris leonina (von Linstow, 1902). Of these, Taenia krabbei and Toxascaris leonina are recorded for the first time from this host in North America. Echinococcus granulosus occurred in 30% of the wolves. Observations on the occurrence, distribution, and natural history of these helminths have been presented. Although both E granulosus and T. spiralis are pathogenic for man, it is concluded that infected wolves have little importance as a source of human infection.

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