Abstract
Black rats (Rattus rattus) and house mice
(Mus musculus) from Lord Howe Island were live-trapped,
housed in the laboratory and tested for resistance to the anticoagulant poison
warfarin. All rats fed warfarin (0.025% w/w) in their diet died
within 4–12 days whereas no rats in the untreated group died. Mice fed
warfarin at the same concentration over 21 days all survived. Black rats on
Lord Howe Island remain susceptible to warfarin, but house mice appear
resistant.
Subject
Management, Monitoring, Policy and Law,Ecology, Evolution, Behavior and Systematics