Faunal analysis of chigger mites (Acari: Prostigmata) on small mammals in Yunnan province, southwest China

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• 作者：Pei-Ying Peng ; Xian-Guo Guo ; Tian-Guang Ren ; Wen-Yu Song
• 关键词：Acari ; Chigger mite ; China ; Fauna ; Rodent ; Yunnan
• 刊名：Parasitology Research
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：114
• 期：8
• 页码：2815-2833
• 全文大小：1,805 KB
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  Margolis L, Esch
• 作者单位：Pei-Ying Peng (1)
  Xian-Guo Guo (1)
  Tian-Guang Ren (1)
  Wen-Yu Song (1)
  
  1. Vector Laboratory, Institute of Pathogens and Vectors, Dali University (Branch of Yunnan Provincial Key Laboratory for Zoonosis Control and Prevention), Dali, Yunnan Province, 671000, People’s Republic of China
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Medical Microbiology
  Microbiology
  Immunology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-1955

文摘

This paper studied the species diversity and fauna distribution of chigger mites on small mammals in Yunnan province, southwest Yunnan. In total, 120,138 individuals of chigger mites were collected from 13,760 individual small mammals, and these mites were identified as comprising two families, 26 genera, and 274 species. Of the five zoogeographical subregions, the mite species diversity in subregions I and II was higher than that in subregions III, IV, and V. Four mite species (Leptotrombidium scutellare, Leptotrombidium sinicum, Leptotrombidium deliense, and Helenicula simena) were the most dominant species in the whole province. Several vector species of chigger mites co-existed in Yunnan, and L. deliense (a main vector of scrub typhus in China) was mainly distributed in subregions IV and V with lower latitude and average altitude whereas L. scutellare (also a main vector in China) was mainly distributed in subregions I, II, and III with higher latitude and average altitude. Some geographically widely distributed mite species were also the mites with wide host ranges and low host specificity. The dominant mite species and their clustering tendency in the dendrogram of hierarchical clustering analysis were highly in accordance with the zoogeographical divisions. The species diversity of chigger mites showed a parabolic tendency from the low altitude (<500?m) to the high altitude (>3,500?m) along the vertical gradients and reached the highest value in the middle altitude regions in 2,000-,500?m. The highest species diversity of the mites and their small mammal hosts happened in the regions around the Hengduan Mountains, which is a hotspot of biodiversity in Asia continent. The host and its sample size, geographical scope, landscape, topography, and some other factors comprehensively influence the species diversity and faunal distribution of chigger mites. A systematic field investigation with a wide geographical scope and large host sample is strongly recommended in the fauna study of chigger mites and other ectoparasites.