Impacts of climate, host and landscape factors on Culicoides species in Scotland
Impacts of climate, host and landscape factors on Culicoides species in Scotland
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DOI：
10.1111/j.1365-2915.2011.00991.x
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发表时间：
2012-06-01
影响因子：
1.9
通讯作者：
Blackwell, A.
中科院分区：
文献类型：
--
作者：
Purse, B. V.;Falconer, D.;Blackwell, A.
库蚊叮咬蚊(双翅目：蝉科)携带多种国际上重要的家畜虫媒病毒病原体，是一种广泛存在的叮咬公害。本研究在一个分层的广义线性模型框架内，研究了景观、宿主和遥感气候因素对苏格兰当地牲畜相关物种丰度的影响。在诱捕的成年雌性蚊虫中，冷色库蚊占56%，细粒库蚊占41%。Impunctatus Goetghebuer和C.Pulicaris S.S.白纹伊蚊数量最多，分布最广(分别占被困雌虫的29%和10%)。丰度模型适用于美洲库蚊、三角库蚊和斑点库蚊(调整R2：0.590.70)，但不适用于细纹夜蛾。(调整后R2：0.36)和陈旧梭菌组(调整后R2：0.08)。结合宿主、景观和气候因素的模型最好地解释了局部尺度的丰度模式。马尾松毛虫的丰度与牛的密度呈负相关，与草场盖度呈正相关，这与该物种在幼虫阶段对轻牧草、湿草甸草地的偏好一致。即使在很短的距离内(不到几公里)，这种物种的预测丰度在不同的农场也有很大差异。讨论了可能有助于更准确地预测更广泛的库蚊属物种的局部丰度模式的建模方法。
Culicoides biting midges (Diptera: Ceratopogonidae) vector a wide variety of internationally important arboviral pathogens of livestock and represent a widespread biting nuisance. This study investigated the influence of landscape, host and remotely-sensed climate factors on local abundance of livestock-associated species in Scotland, within a hierarchical generalized linear model framework. The Culicoides obsoletus group and the Culicoides pulicaris group accounted for 56% and 41%, respectively, of adult females trapped. Culicoides impunctatus Goetghebuer and C. pulicaris s.s. Linnaeus were the most abundant and widespread species in the C. pulicaris group (accounting for 29% and 10%, respectively, of females trapped). Abundance models performed well for C. impunctatus, Culicoides deltus Edwards and Culicoides punctatus Meigen (adjusted R2: 0.590.70), but not for C. pulicaris s.s. (adjusted R2: 0.36) and the C. obsoletus group (adjusted R2: 0.08). Local-scale abundance patterns were best explained by models combining host, landscape and climate factors. The abundance of C. impunctatus was negatively associated with cattle density, but positively associated with pasture cover, consistent with this species' preference in the larval stage for lightly grazed, wet rush pasture. Predicted abundances of this species varied widely among farms even over short distances (less than a few km). Modelling approaches that may facilitate the more accurate prediction of local abundance patterns for a wider range of Culicoides species are discussed.