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KMID : 0603820110170040367
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Journal of Experimental & Biomedical Science
2011 Volume.17 No. 4 p.367 ~ p.370
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Relative Abundance of Vectors of Scrub Typhus in Jeonnam Province, Korea
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Song Hyeon-Je
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Abstract
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Studies on the relative abundance of potential vectors of scrub typhus was conducted from April to October 2009 at the Jangseong of Jeonnam Province, Korea. Among the total 62 field rodents collected by the Sherman collapsible traps, 56 rodents were Apodemus agrarius (90.3%), 4 were Crocidura lasiura (6.4%) and 2 were Cricetulus triton nester (3.2%). Out of the 62 field rodents, 39 were parasitized by chiggers, showing 62.9% of the infestation rate and 80.0 of the chigger index. Chigger index of A. agrarius and C. triton nester were 79.9, 82.0, respectively. But chigger mite was not collected from C. lasiura. From the trapped field rodents, 3,120 chiggers were collected and identified with 6 species of 2 genera. Leptotrombidium scutellare, the vector species of tsutsugamushi disease, was the dominant species, showing 2,276 chiggers (72.9%). L. pallidum was the second dominant species showing 346 chiggers (11.0%). The distribution of chigger mites was showed the different dominant species according to seasons. L. pallidum was the predominant chigger collected in April (34.8%), May (77.8%) and Jun (39.3%), whereas L. scutellare was the predominant chigger collected in September (78.78%) and October (76.8%).
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KEYWORD
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Tsutsugamushi disease, Field rodents, Vector species, Jeonnam province
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