关键词: 板齿鼠, 杀鼠灵, 敏感性, 抗药性

Abstract: Objective To understand susceptibility change of Bandicota indica in Zhanjiang to Warfarin, providing scientific basis for well-organized deratization. Methods The males and females were firstly separated by sex and then divided into groups at random. No-choice tests were carried out using the Warfarin bait at concentration of 0.002% at five different feeding days. The relationships between death rates and the different feeding days were analyzed by Bliss software. Results For the susceptibility to Warfarin, there was no significant difference (P_b>0.05, P_LFP50>0.05) between males and females. Calculated based on these data, the LF-P line was y=4.25+2.57x, and LFP₅₀, LFP₉₉ and its 95% confidence limits for Bandicota indica were 1.95(1.48-2.58)d and 15.71(6.29-39.23)d, respectively. Conclusion Comparing with the susceptibility results detected in 1989, the local Bandicota indica was still sensitive to anticoagulant rodenticides though the proportion of high tolerant individual increased. The rodenticide could be continued to kill Bandicota indica as long as the quality of the poison bait was assured and the palatability was enhanced.