Tick distribution in border regions of Northwestern China
Tick distribution in border regions of Northwestern China
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DOI：
10.1016/j.ttbdis.2019.02.011
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发表时间：
2019-04-01
影响因子：
3.2
通讯作者：
Wang, Yuanzhi
中科院分区：
文献类型：
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作者：
Sheng, Jinliang;Jiang, Mengmeng;Wang, Yuanzhi
蜱是新出现和重新出现的病原体的重要载体。本研究的目的是确定新疆维吾尔自治区（XUAR）特别是边境地区的蜱虫种类。 2011年，在新疆35个县（市）的10个动物宿主中，共采集了蜱虫22,994只（其中成虫22,629只，幼虫和若虫365只），属于蜱属、蜱虫、蜱虫、血蜱虫、硬蜱和盘蜱6个属，14个蜱种。 2017年，主要从家畜中采集到扇头蜱、白斑蜱、亚洲斑蜱和边缘斑蜱，而坚果斑蜱、斑点血蜱、血斑蜱、血斑蜱、森林斑蜱、斑斑蜱和白腹蜱被零星发现。基于16S rDNA的系统发育分析表明： i) 新疆R. turanicus基因型表现出地理分离，属于分支I（主要分布在中亚）而不是分支II（主要分布在地中海盆地）； ii) Ixodes kaiseri，首先从亚洲獾（Meles leucurus）中取样，当组合 COI 单倍型时，与欧洲蜱种相比处于祖先位置； iii) 与地中海和欧洲的相比，来自中国的大理石鸡貂的 Haemaphysalis erinacei 是一个独立的基因型。我们的研究结果表明，在蜱的系统发育中，地理范围比宿主关联发挥着更重要的作用，特别是对于 R. turanicus、I. kaiseri 和 H. erinacei。
Ticks are important vectors of emerging and re-emerging pathogens. The aim of this study was to determine tick species occurring in Xinjiang Uygur Autonomous Region (XUAR), especially on border regions. A total of 22,994 ticks (including 22,629 adults, 365 larvae and nymphs), belonging to six tick genera (i.e. Dermacentor, Hyalomma, Rhipicephalus, Haemaphysalis, Ixodes and Argas) and fourteen tick species, were collected from ten animal hosts in thirty-five counties (cities) in XUAR during 2011 - 2017. Rhipicephalus turanicus, Dermacentor niveus, Hyalomma asiaticum and Dermacentor marginatus were dominantly sampled from domestic animals while Dermacentor nuttalli, Haemaphysalis punctata, Haemaphysalis concinna, Rhipicephalus sanguineus sensu lato, Dermacentor silvarum, Hyalomma scupense and Argas persicus were sporadically found. Based on 16S rDNA, phylogenetic analyses showed that: i) R. turanicus genotypes in XUAR showed geographical separation, and belonged to clade I (major distribution in the Central Asian) rather than clade II (major distribution in the Mediterranean Basin); ii) Ixodes kaiseri, firstly sampled from Asian badgers (Meles leucurus), was in ancestral position compared to European tick species when combining COI haplotypes; and iii) Haemaphysalis erinacei from marbled polecats in China was a separate genotype compared with that in Mediterranean and Europe. Our findings suggest that geographical range plays a more important role than host-association in tick phylogeny, especially for R. turanicus, I. kaiseri and H. erinacei.