Report on the first record of raccoons in Bekanbeushi Marsh in Akkeshi, Hokkaido, Japan

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  • 北海道厚岸町別寒辺牛湿原におけるアライグマの初記録についての報告

Abstract

<p>In August 2020, a raccoon (Procyon lotor) was captured near the Bekanbeushi Marsh, a quasi-national park in eastern Hokkaido, Japan. No raccoon has ever been captured in this region before, and the impact of this black-listed invasive species’ expansion in this area is a concern. Therefore, we attempted to determine the distribution of raccoons in Bekanbeushi Marsh and surrounding areas. We installed ten camera and bait traps along the river inside the catchment area of the marsh to observe raccoons. The surveys were conducted between June and November 2021. Trace surveys, including footprint surveys, were also conducted at these points during camera maintenance. The camera traps and trace surveys resulted in several pieces of evidence for raccoon inhabitation at one observation point. We also conducted interviews and trace surveys on dairy farms close to this point. Two sightings were confirmed. Based on these results, it can be concluded that raccoons are already distributed in this area.</p>

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