Objective To provide a scientific statistical method for accurate determination of the seasonal density of plague host animals. Methods The data of Spermophilus dauricus were collected using Excel 2013 software from a natural plague focus monitoring site in Kangbao pasture in Hebei province, China from April to October in 2015-2019. The seasonal density of S. dauricus was analyzed by the concentration method. Results From 2015 to 2019, a total of 240 S. dauricus individuals were captured in an area of 490 hm2, and the mean annual density in Kangbao pasture was 0.49 inds/hm2. The highest density was 0.66 inds/hm2 in summer, followed by 0.37 inds/hm2 in Autumn and 0.18 inds/hm2 in winter. The highest density was recorded in April 2016 (2.53 inds/hm2), followed by 1.94 inds/hm2 in April 2015 and 1.07 inds/hm2 in July 2018. Analysis with the concentration method showed M=0.330 5, suggesting that the density of S.dauricus varied across seasons. Conclusion The concentration method can accurately determine the seasonal density of S. dauricus as a plague host, and the highest density is found in summer, followed by autumn.
LIU Guan-chun, KANG Dong-mei, YAN Dong, LAN Xiao-yu, HOU Zhi-lin, CHEN Yong-ming, REN Xing-yu, SONG Ming
. A study of the density of plague host Spermophilus dauricus by concentration method[J]. Chinese Journal of Vector Biology and Control, 2021
, 32(2)
: 158
-160
.
DOI: 10.11853/j.issn.1003.8280.2021.02.007
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