Distribution and Host Selection of Leptotrombidium yui in Some Areas of Yunnan Province

Abstract

Abstract:

Objective: To investigate the geographical distribution and host selection of Leptotrombidium yui among different small mammal hosts in some areas of Yunnan province. Methods: A field survey was carried out in 23 counties of Yunnan province between 2001 and 2011. The small mammal hosts were captured with mouse cages and traps with baits. The chigger mites on the surface of two auricles were scraped off by a bistoury, and then preserved in 70％ethanol．Every specimen of the chigger mites on the slides was finally identified into species under a microscope. Some conventional statistical methods were adopted to calculate all the collected chigger mite species and the constituent ratios of L. yui in different areas and on different hosts, together with its prevalence（P）, mean intensity（MI）and mean abundance （MA）on different hosts. The patch index （m*/m）was used to measure the spatial patterns of L. yui among the different individuals of its small mammal hosts. Results: A total of 108 480 individuals of chigger mites were collected from the body surface of all the captured small mammal hosts. All the collected chigger mites were identified as 3 subfamilies, 24 genera and 234 species. Of 234 species of chigger mites, 1 959 individuals of L. yui were collected only in 9 counties. The collected individuals of L. yui accounted for 1.81％ of the total mites （108 480 individuals）. 88.77%of L. yui came from the mountainous regions and habitats while only 11.23% of L. yui from flatland areas. The hosts in orders Rodentia and Scandentia harbored 57.78% and 42.16% of the collected L. yui. Of 67 species（in 34 genera and 12 families of 5 orders）, Tupaia belangeri（in Order Scandentia）harbored 42.16% of the collected L. yui with relatively high prevalence （P=26.52%）and mean intensity （MI=13.54 mites / per host）, and other wild-dwelling small mammals came next. The patch index showed that L. yui had an aggregated distribution pattern among different individual of their hosts. Conclusion: L. yui exists in Yunnan province with relatively a considerable number of individuals. In Yunnan province, L. yui is mainly distributed in the
mountainous regions and habitats with relatively high altitude. L. yui can parasitize several different species of hosts with low host specificity, but it prefers to choose Tupaia belangeri and other wild-dwelling small mammals as its main hosts.

Key words: Leptotrombidium yui, geographical distribution, host selection, Yunnan province

CLC Number:

Q968.2

GUO Bin, GENG Ming-Lu, GUO Xian-Guo. Distribution and Host Selection of Leptotrombidium yui in Some Areas of Yunnan Province[J]. J4, 2013, 12(3): 20-25.

References

〔1〕黎家灿.中国恙螨：恙虫病媒介和病原体研究〔M〕.广州：
广东科技出版社，1997：1-570.

〔2〕吴光华.我国恙虫病媒介恙螨的调查研究〔J〕.中国媒介生
物学及控制杂志，2005，16（6）：485-487.
〔3〕Wu G，Zhang Y，Guo H，et al. The role of Leptotrombidium
scutellare in the transmission of human diseases〔J〕. Chinese
Medical Journal，1996，109（9）：670-673.
〔4〕Song G. Epidemiological progresses of hemorrhagic fever
with renal syndrome in China 〔J〕. Chinese Medical
Journal，1999，112（5）：472-477.
〔5〕袁庆虹，张海林，张云智，等.云南省2006 年肾综合征出
血热监测研究〔J〕.中国热带医学，2007，7（8）：1404-1406.
〔6〕冯锡光，陈渊民，袁庆虹，等.云南省大理州恙虫病调查研
究〔J〕.中国人兽共患病杂志，2000，16（3）：93-95.
〔7〕冯锡光，陈渊民，自登云，等.云南北部金沙江流域恙虫病
调查研究〔J〕.中国媒介生物学及控制杂志，2001，12（2）：
120-121.
〔8〕宣群，柳爱华，宝福凯.云南恙虫病研究概况〔J〕.中国热带
医学，2010，10（10）：1278-1280.
〔9〕黎家灿，郑小英，奚志勇，等.45 年恙螨与媒介恙螨传播
恙虫病的基础研究〔J〕.中山医科大学学报，2002，239（1）：
1-9.
〔10〕Zuo X H，Guo X G. Epidemiological prediction of the
distribution of insects of medical significance：
comparative distributions of fleas and sucking lice on the
rat host Rattus norvegicus in Yunnan Province，China
〔J〕. Medical and Veterinary Entomology，2011，25（4）：
421-427.
〔11〕Zuo X H，Guo X G，Zhan Y Z，et al. Host selection and
niche differentiation in sucking lice（Insecta：Anoplura）
among small mammals in southwestern China〔J〕.
Parasitology Research，2011，108（5）：1243-1251.
〔12〕Ritzi C M，Whitaker J O Jr. Ectoparasites of small mammals
from the Newport Chemical Depot，Vermillion County，
Indiana〔J〕. Northeastern Naturalist，2003，10（2）：149-
158.
〔13〕詹银珠，郭宪国，左小华，等. 云南省部分地区地里纤恙
螨分布调查〔J〕.中华流行病学杂志，11，32（1）：13-16.
〔14〕Storm J J，Ritzi C M. Ectoparasites of small mammals in
western Iowa〔J〕. Northeastern Naturalist，2008，15（2）：
283-292.
〔15〕Guo X G，Qian T J，Meng X Y，et al. Preliminary analysis
of chigger communities associated with house rats（Rattus
flavipectus） from six counties in Yunnan，China〔J〕.
Systematic & Applied Acarology，2006，11：13-21.
〔16〕Men X Y，Guo X G，Dong W G，et al. Ectoparasites of
Chevrier’s field mouse，Apodemus chevrieri，in a focus
of plague in southwest China〔J〕. Medical and Veterinary
Entomology，2007，21（3）：297-300.
〔17〕Kuno E. Sampling and analysis of insect populations〔J〕.
Annual Review of Entomology，1991，36（1）：285-304.
〔18〕Lopez J E. Parasite prevalence and the size of host
populations：an experimental test 〔J〕. The Journal of
Parasitology，2005，91（1）：32-37.
〔19〕林上进，郭宪国，孙笑梅，等. 云南省20 县（市）树鼩体
表寄生恙螨的初步分析〔J〕.大理学院学报，2011，10（8）：
30-33.
〔20〕罗礼溥，郭宪国. 云南省保山等25 县市黄胸鼠革螨的寄
生状况〔J〕.中国人兽共患病学报，2007，23（8）：844-847.

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