衛生動物
Online ISSN : 2185-5609
Print ISSN : 0424-7086
青森県で確認された本邦初のワルファリン抵抗性ドブネズミ
谷川 力春成 常仁長岡 健次
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ジャーナル オープンアクセス

2006 年 57 巻 3 号 p. 241-244

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Resistance level to warfarin was evaluated among 3 colonies of brown rats, Rattus norvegicus, collected in Aomori, Shinjuku and Yokohama. Flourtype baits containing 0.005% (w/w) warfarin were given to them for 12 days. The average survived dose (a.i.) in the Aomori colony was 40.7mg/kg. On the other hand, the lethal days and dose in brown rats were 7 days and 5.7mg/kg in the Shinjuku colony, 4 days and 6.7mg/kg in the Yokohama colony, respectively. Therefore, the Aomori colony was judged as resistant to warfarin, and this is the first case in Japan. On the other hand, the Shinjuku and Yokohama colonies were judged as susceptible to warfarin.

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© 2006 日本衛生動物学会
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