期刊
TICKS AND TICK-BORNE DISEASES
卷 7, 期 6, 页码 1180-1185出版社
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.ttbdis.2016.07.018
关键词
Ixodes ricinus; Risk factors; Human behavior
Ixodes ricinus L. is the commonest tick encountered by humans in Central Europe and the most important vector of tick-borne diseases (TBD) in Europe. Foresters represent a group at elevated risk of exposure to I. ricinus throughout Europe. Here, we employed an experimental design similar to one used previously to determine what behavioral factors heighten exposure to questing Ixodes pacificus nymphs in a hardwood forest in the far-western United States. Five activities were evaluated systematically in a coniferous forest and a mixed broadleaved forest in west-central Poland: (i) walking in low-cut running shoes; (ii) sitting atop logs; (iii) sitting on leaf litter; (iv) sitting against tree trunks; and (v) gathering firewood. In total, 540 L ricinus ticks were collected (198 larvae, 327 nymphs, 15 adults) in spring and late summer. Many more ticks were collected in spring than in late summer, and in the mixed broadleaved forest versus the coniferous forest. The riskiest behavior for acquiring nymphs in both spring and late summer was gathering firewood, though sitting atop logs was nearly as perilous in late summer. In contrast, the riskiest behaviors for encountering larvae in spring and late summer were sitting against trunks and sitting on leaf litter, respectively. Pairwise comparisons revealed only two significant associations among the variables explored for the nymphs: season and human gender, and season and type of forest. For larval ticks, the most significant associations were gender and sitting behaviors and for type of forest and sitting on leaf litter or against tree trunks. The most commonly infested body region was the lower legs. (C) 2016 Elsevier GmbH. All rights reserved.
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