Geographical distribution of Orientia tsutsugamushi strains in chiggers from three provinces in Korea
Geographical distribution of Orientia tsutsugamushi strains in chiggers from three provinces in Korea
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DOI：
10.1111/1348-0421.12639
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发表时间：
2018-09-01
影响因子：
2.6
通讯作者：
Jang, Won-Jong
中科院分区：
文献类型：
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作者：
Choi, Yeon-Joo;Lee, In-Yong;Jang, Won-Jong
2009 年 4 月至 11 月期间，从韩国中部和南部地区采集了恙螨，目的是调查恙螨的季节和地理分布。共鉴定出1136只恙螨。其中包括属于四个属的八个物种，如下：Leptotrombidium scutellare（27.2％，n = 309），L. pallidum（54.6％，n = 621），L. orientale（6.25％，n = 71），L. palpale（1.59％，n = 18），L. zetum（2.0％，n = 23）， Euschoengastia koreaensis (1.5%, n=17)、Cheladonta ikaoensis (0.08%, n=1) 和 Neotrombicula japonica (1.05%, n=12)。 4月至5月苍白球菌密度较高，而春季10月观察不到盾片L. scutallare。针对 56 kDa 蛋白基因的血清型特异性巢式 PCR 和测序分析鉴定出恙螨体内的 1136 恙虫病菌株为保宁 (6.8%)、神田 (0.4%)、大石 (0.3%)、堤川 (0.1%)、Youngworl (0.1%) 和原州 (0.1%)。我们的研究结果表明，苍白乳球菌和盾片乳杆菌是韩国的优势物种，并且存在地理和季节变化。
Chiggers were collected from the central and southern parts of South Korea between April and November, 2009 with the aim of investigating the seasonal and geographical distribution of Or. A total of 1136 chiggers were identified. They included eight species belonging to four genera, as follows: Leptotrombidium scutellare (27.2%, n=309), L. pallidum (54.6%, n=621), L. orientale (6.25%, n=71), L. palpale (1.59%, n=18), L. zetum (2.0%, n=23), Euschoengastia koreaensis (1.5%, n=17), Cheladonta ikaoensis (0.08%, n=1) and Neotrombicula japonica (1.05%, n=12). The density of L. pallidum was high from April to May, whereas L. scutallare was not found in spring, being observed from October. Serotype-specific nested PCR targeting the 56 kDa protein gene and sequencing analysis identified that the strains of 1136 O. tsutsugamushi in the chiggers as Boryong (6.8%), Kanda (0.4%), Oishi (0.3%), Jecheon (0.1%), Youngworl (0.1%) and Wonju (0.1%). Our findings indicate that L. pallidum and L. scutellare are dominant species in Korea and have geographical and seasonal variations.