L'Hostis M, Dumon H, Dorchies B, Boisdron F, Gorenflot A
Laboratoire de Parasitologie, Ecole Nationale Vétérinaire, Nantes, France.
Exp Appl Acarol. 1995 Apr;19(4):211-20. doi: 10.1007/BF00130824.
A longitudinal survey was carried out during a 2 year period in Western France to assess the infestation level of grazing pastures by Ixodes ricinus ticks. Four farms were visited once a month and each of the grazing pastures was sampled in the centre and at the border using the blanket dragging method. A total of 3562 I. ricinus (34 adults, 900 nymphs and 2628 larvae) were collected and the infestation was significantly higher during the first year (p < 0.0001). The infestation level by I. ricinus varied between grazing pastures and farms. Grazing pastures in the vicinity of forest were more infested than the others, all through the study. The seasonal distribution of ticks showed peaks, with low fluctuations between farms, years and stages. Tick abundance could not be related to vegetation, but only to the vicinity of woods.
在法国西部进行了一项为期两年的纵向调查，以评估蓖麻硬蜱对放牧牧场的侵染水平。每月走访四个农场，使用拖毯法在每个放牧牧场的中心和边界进行采样。共采集到3562只蓖麻硬蜱（34只成虫、900只若虫和2628只幼虫），第一年的侵染情况显著更高（p < 0.0001）。蓖麻硬蜱的侵染水平在不同的放牧牧场和农场之间有所不同。在整个研究过程中，靠近森林的放牧牧场比其他牧场受到的侵染更严重。蜱的季节分布呈现出高峰，不同农场、年份和阶段之间的波动较小。蜱的数量与植被无关，仅与树林的距离有关。
