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Note on consumption of fox bait by alien raccoons in eastern Hokkaido, Japan
Arisawa H., Uraguchi K., Kouguchi H., Oshida T.
P. 178-182
Alveolar echinococcosis is a zoonosis caused by tapeworm, Echinococcus multilocularis. The red fox (Vulpes vulpes) is its principle definitive host. Effective decrease in E. multilocularis prevalence is a result of baiting red foxes with the anthelmintic praziquantel. Recently, introduced raccoons (Procyon lotor) are increasing in Hokkaido, Japan. If they frequently consume fox bait, the baiting campaign may not be effective on red foxes. With camera trap, we examined seasonal consumption of fox bait by raccoons in Memuro, Tokachi District, Hokkaido, Japan from May to October, 2018. Raccoons have been reported in Memuro since 2014. We photographed red foxes, raccoons, raccoon dogs (Nyctereutes viverrinus albus), domestic cats (Felis catus), weasels, murids, Eurasian red squirrels (Sciurus vulgaris), sika deer (Cervus nippon), bats, and birds. Proportions of animal species photographed significantly differed among seasons. Red foxes, raccoons, raccoon dogs, domestic cats, and murids consumed fox bait. Proportions of animals consuming fox bait were significantly differed among seasons. In summer and autumn, raccoons frequently appeared at baiting sites and consumed fox bait. We recommend removing raccoons from the area, before baiting campaign.

DOI: 10.15298/rusjtheriol.19.2.08

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