ワルファリン抵抗性と感受性クマネズミに対するジフェチアロン製剤の効力 [in Japanese] Effectiveness of difethialone baits to warfarin-resistant and susceptible colonies of roof rats, Rattus rattus in Japan [in Japanese]
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The efficacy of toxic bait, which includes 0.0025% difethialone: [(bromo-4'-[biphenyl-1-1']-yl-4)3-tetrahydro-1,2,3,4-naphthyl-1] 3-hydroxy-4 2H-1 benzothiopyrane-one, was tested against warfarin-resistant and susceptible roof rats (Rattus rattus). When 0.0025% difethialone baits were given to the warfarinresistant roof rats, 5 of 12 warfarin-resistant rats were killed after eating a.i. (active ingredient) 1.8mg/kg in average for 24 hours. After eating 4.7mg/kg bait in average for 2 days, 11 of 12 rats were killed. Nine of 12 rats were killed 3 days after eating a.i. 6.9mg/kg. All rats tested died within 4 days after eating a.i. 10.4mg/kg (n=12). On the other hand, when 0.0025% difethialone baits were given to the warfarin-susceptible roof rats (n=12), all rats were killed after eating a.i. 1.7mg/kg in average for 24 hours exposure.
- Medical Entomology and Zoology
Medical Entomology and Zoology 57(4), 355-359, 2006
The Japan Society of Medical Entomology and Zoology