Evaluation of single dose efficacy of difethialone a second-generation anticoagulant for the control of rodents inhabiting arid ecosystem
2011
CHAUDHARY, VIPIN | TRIPATHI, R S
A study was conducted during 2002-03 to evaluate single dose efficacy of difethialone-a second generation anticoagulant rodenticide was evaluated in laboratory against Indian gerbil, Tatera indica, cutch rock rat, Rattus cutchicus, Indian desert gerbil, Meriones hurrianae and northern palm squirrel, Funambulus pennan/i. Anthe test rodents were exposed to pearl millet-based difethialone (0.0025%) loose baits for one day under no-choice and choice condition. In toxicity trials under no-choice feeding, all the test rodents succumbed to the poison bait within 3-11 days after treatment. Minimum dose required to initiate mortality in T. indica, R. clltchictls, M, hurrianae and F. pennanti was 0.50, 0.94, 0.60 and 1.42 mg/kg respectively. Mortality oftest rodents was reduced to 80, 80, 70 and 50% in T. indica (80%), R. cutchicus (80%), M, hurrianae (700/0) and F. pennanti (50%) respectively when the poison bait was exposed under choice test. However, no significant difference was observed between the consumption of plain and poison bait indicating that anticoagulant was fairly well acceptable and palatable to all the test rodent species. Difethialone is an effective single dose anticoagulant rodenticide for managing rodents of arid ecosystem.
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