Anticoagulant Rodenticide Resistance in Commensal Rodents in Guangdong

Objective To study the resistance development of anticoagulant rodenticide in commensal rodents. Methods Tests was carried out without selectivity by rodents based on the method of National Rodenticide Resistance Monitoring Co-worker Group. Results 769 Rattus flavipectus and 303 Rattus norvegicus were caught in five cities of Guangdong were tested. The resistance rate differs from 1.69 to 12.21 the average dosage taken differs from 10.36 mg/kg to 131.96 mg/kg . The result showed that Rattus flavipectus and Rattus norvegicus had become individual resistance to the resistance rodenticide Ⅰ. Conclusion The anticoagulant rodenticide Ⅱ should be used in the areas gathered with Rattus flavipectus. The anticoagulant rodenticide Ⅰ can be still used but should be used scientifically and properly with careful tests of sensitivity.