BIOLOGIA
·
2023
·
IF 1.5
Guo Yu,Guo Xian-Guo,Song Wen-Yu,Lv Yan,Yin Peng-Wu,Jin Dao-Chao
Chiggers are a group of ectoparasites and they are the vector of scrub typhus. Although the Ryukyu mouse ( Mus caroli ) is a common species of rodent in some outdoor habitats, few studies are about the mouse itself and its ectoparasites. To date, there has been no specific report on chiggers of M. caroli . Based on the field investigation in southwest China from 2001 to 2019, this paper reported the infestation and distribution of chiggers on M. caroli for the first time. Among the 91 sites investigated, 263 Ryukyu mice were captured at 18 sites, and 678 chiggers were collected from the mice. The collected chiggers were identified to be one family, two subfamilies, six genera, and 16 species with relatively low species diversity. The overall infestation prevalence ( P M ), mean abundance ( MA ), and mean intensity ( MI ) were P M = 27.38%, MA = 2.58 chiggers/per mouse, and MI = 9.42 chiggers/per mouse respectively. The dominant chigger species are Walchia ewingi and W. micropelta with a total constituent ratio of C r = 94.10% (638/678), and they were of aggregated distribution among different individuals of the host M. caroli . The distribution of two dominant chigger species seemed to be mutually independent with the association coefficient V ≈ 0 ( p < 0.001). The infestation ( P M , MA , and MI ) of M. caroli with chiggers greatly fluctuated in different geographical landscapes, altitudes, and latitudes with an obvious environmental heterogeneity. The male and adult M. caroli harbored much more chigger mites with significantly higher infestations ( P M , MA and MI ) than the female and juvenile mice. The theoretical curve of species abundance distribution of the chigger mite community on M. caroli was fitted by Preston lognormal distribution model with fitting goodness R 2 = 0.77. Based on the iChao 1 formula, the expected total number of chigger species on the mice was estimated to be 24 species.
研究领域:
医学昆虫学
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寄生虫学
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生态学
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产品关联
DOI
高影响因子
Bio-protocol
·
2024
·Vol. 14
·期 21
·e5104
·
IF 1
Peng-Wu Yin,Xian-Guo Guo,Wen-Yu Song,Wen-Ge Dong,Yan Lv,Dao-Chao Jin
The ectoparasites of rodents and other small mammals usually involve five categories of arthropods—fleas, sucking lice, gamasid mites, chigger mites, and occasionally, ticks. These ectoparasites are medically important, serving as vectors for diseases such as plague, murine typhus, scrub typhus, forest encephalitis, Lyme disease, and other zoonoses. Field surveys, collection, and specimen preparation of ectoparasites are crucial for studying taxonomy, faunistics, ecology, and epidemiology. They are also essential for vector surveillance. The present protocol summarizes the on-site monitoring and specimen-making of ectoparasites of rodents and other sympatric small mammals. Besides the collection and specimen preparation of small mammal hosts, the protocol describes in detail the collection, fixation, specimen-making, and taxonomic identification of ectoparasites and provides some monitoring indices. The on-site monitoring indices include the host density index and the infestation indices of ectoparasites (prevalence, mean abundance, mean intensity). The methodologies outlined in this protocol provide technical guidance and references for vector monitoring (surveillance) and control. Key features • Collection and specimen preparation of small mammal hosts, including rodents (rats, mice, and voles) and other sympatric small mammals (shrews, tree shrews, and pikas). • Collection, fixation, specimen-making, and taxonomic identification of ectoparasites, including fleas, sucking lice, gamasid mites, chigger mites, and ticks. • On-site monitoring indices—host density index and infestation indices of ectoparasites: prevalence, mean abundance, and mean intensity. Graphical overview Flowchart for collection and specimen-making of ectoparasites and their hosts. A. Process for the collection and specimen preparation of small mammal hosts. B. Collection and fixation of ectoparasites. C. Process for specimen-making for different categories of ectoparasites.
研究领域:
寄生虫学
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动物学
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流行病学
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公共卫生
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医学昆虫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）