Objective To analyze the results of tick ecological surveillance in Zhejiang province, China, 2017-2020, to understand species composition, density and seasonal fluctuation of ticks in Zhejiang province, and to provide a basis for the development of control measures. Methods Twelve surveillance sites for ticks were set up in Zhejiang province. Parasitic ticks were monitored by tick inspection on the body surface of animal and the questing ticks were monitored using drag-flag method. Ticks collected from the same sampling sites or animals were numbered uniformly or placed in the same tube and brought back to the laboratory for classification, identification, and counting. The monitoring data were processed and analyzed using Excel 2010 software. Results The parasitic tick index was 2.25 and the questing tick density was 0.48 ticks/flag·100 m in Zhejiang province, 2017-2020. Haemaphysalis longicornis was the dominant parasitic and questing tick. Among host animals, sheep had the highest tick index (4.29), followed by cattle (1.33). The dominant tick species were H. longicornis on sheep, Rhipicephalus microplus on cattle, H. longicornis on rural dogs, and R. sanguineus on urban dogs. The questing tick density was 0.94 ticks/flag·100 m in rural environment and 0.04 ticks/flag·100 m in scenic area. The tick density in Zhejiang province showed no obvious seasonal fluctuation. Conclusion In 2017-2020, the dominant tick species in Zhejiang province was H. longicornis. The dominant parasitic tick species varied across host animals, and sheep had the highest tick infestation rate. The questing tick density in rural environment was significantly higher than that in scenic area. The results can provide a reference for the public health institutions of Zhejiang province to formulate targeted tick and tick control measures.
WANG Jin-na, LI Tian-qi, LUO Ming-yu, WU Yu-yan, LIU Qin-mei, GONG Zhen-yu
. Analysis of the tick ecological surveillance results in Zhejiang province from 2017 to 2020[J]. Chinese Journal of Vector Biology and Control, 2022
, 33(4)
: 466
-470
.
DOI: 10.11853/j.issn.1003.8280.2022.04.004
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