Objective To determine the sensitivity of Eospalax baileyi to bromadiolone (an anticoagulant rodenticide) and the palatability of bromadiolone for E. baileyi in the eastern margin of the Qilian Mountains, and to provide a scientific basis for prevention and control of E. baileyi in the field using bromadiolone as a rodenticide. Methods During July to August, 2018, non-invasive live cage trapping was used to capture E. baileyi in Tianzhu area in the eastern margin of the Qilian Mountains; the E. baileyi was then individually caged and fed in a laboratory environment. In a non-selective food intake test, 0.000 5% bromadiolone bait was continuously provided to the E. baileyi for 1, 3, 5, and 7 days, and food intake and death of the E. baileyi were recorded. Bliss calculating program in SPSS 19.0 software was used for regression analysis and fitting, and the half-lethal feeding period (LFP50) and the 99% lethal feeding period (LFP99) were calculated. The t-test for grouped data was applied to analyze the sensitivity and palatability. Results There was a decreasing trend in the food intake of E. baileyi, with no significant difference observed in the sensitivity of E. baileyi to bromadiolone between sexes (t=-1.232, P=0.329). The estimated values of LFP50 and LFP99 were 0.492 day and 11.897 days, respectively. The death peak of E. baileyi appeared on the sixth to the ninth day after intake of the poison bait. The first and second palatability of 0.000 5% bromadiolone for E. baileyi was 0.66 and 0.77, respectively, both of which showed a good food intake coefficient and a laboratory-corrected deratization rate of 100%. Conclusion Bromadiolone is highly toxic and palatable to the E. baileyi in Tianzhu area in the eastern margin of the Qilian Mountains with no resistance observed; therefore, 0.000 5% bromadiolone may be used to control E. baileyi effectively in this area.
TAN Yu-chen, HAN Tian-hu, XU Guo-cheng, WEI Yan-ming, CAI Zhi-yuan, WANG Chan, YAO Bao-hui, GUO Huai-liang, SU Jun-hu
. The determination study of Eospalax baileyi to bromadiolone and palatability of bromadiolone for E. baileyi in the eastern margin of the Qilian Mountains[J]. Chinese Journal of Vector Biology and Control, 2019
, 30(5)
: 545
-549
.
DOI: 10.11853/j.issn.1003.8280.2019.05.015
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