Catalogue of chigger mites on small mammals in Dehong Dai and Jingpo Autonomous Prefecture of Yunnan Province along the China-Myanmar border

LIU Ru-jin, GUO Xian-guo, ZHAO Cheng-fu, ZHANG Zhi-wei, ZHAO Ya-fei, FAN Rong, SONG Wen-yu

doi:10.11853/j.issn.1003.8280.2024.03.017

Chinese Journal of Vector Biology and Control >

2024 , Vol. 35 >Issue 3: 349 - 357

DOI: https://doi.org/10.11853/j.issn.1003.8280.2024.03.017

Investigation

Catalogue of chigger mites on small mammals in Dehong Dai and Jingpo Autonomous Prefecture of Yunnan Province along the China-Myanmar border

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Vector Laboratory, Institute of Pathogens and Vectors, Yunnan Provincial Key Laboratory for Zoonosis Control and Prevention, Dali University, Dali, Yunnan 671000, China

Received date: 2023-11-08

Online published: 2024-06-29

Supported by

National Natural Science Foundation of China (No. 82160400)

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Abstract

Objective To investigate the species composition and distribution of chigger mites on the body surface of small mammals in the Dehong Dai and Jingpo Autonomous Prefecture (Dehong Prefecture) of Yunnan Province along the China-Myanmar border.Methods A field investigation was carried out in four cities and counties of Dehong Prefecture from 2008 to 2022. Chigger mites were collected from the body surface of small mammals such as rodents. Chigger mite slide specimens were prepared for identification and classification under a microscope. The constituent ratio of dominant chigger mite species was calculated using Excel 2021 software. According to the taxonomic system of chigger mites, a taxonomic catalogue of the mites was systematically sorted out based on the identification results.Results A total of 1 760 rodents and other small mammals were captured, belong to 27 species, 16 genera, 9 families, and 3 orders. Rattus tanezumi (917/1 760, 52.10%), Eothenomys miletus (296/1 760, 16.82%), Suncus murinus (126/1 760, 7.16%), and R. andamanensis (122/1 760, 6.93%) were the dominant host animals for chigger mites. From the body surface of those small mammals, a total of 9 309 larval chigger mites were identified, involving 117 species, 16 genera, 2 subfamilies, and 1 family, with highly abundant and diverse species. Leptotrombidium deliense (1 597/9 309, 17.16%), Walchia ewingi (1 510/9 309, 16.22%), and Gahrliepia longipedalis (1 329/9 309,14.28%) were the dominant mite species, with a total constituent ratio of 47.65% (4 436/9 309).Conclusion In the epidemic foci of scrub typhus in Dehong Prefecture, there are abundant species of chigger mites, and L. deliense, W. ewingi, and G. longipedalis are dominant mite species.

Key words： Chigger mite; Vector; Catalogue; Endemic areas of scrub typhus; Dehong Dai and Jingpo Autonomous Prefecture; Yunnan Province

Cite this article

LIU Ru-jin, GUO Xian-guo, ZHAO Cheng-fu, ZHANG Zhi-wei, ZHAO Ya-fei, FAN Rong, SONG Wen-yu . Catalogue of chigger mites on small mammals in Dehong Dai and Jingpo Autonomous Prefecture of Yunnan Province along the China-Myanmar border[J]. Chinese Journal of Vector Biology and Control, 2024 , 35(3) : 349 -357 . DOI: 10.11853/j.issn.1003.8280.2024.03.017

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