Biotic and abiotic predictors of tick (Dermacentor variabilis) abundance and engorgement on free-ranging raccoons (Procyon lotor)
Biotic and abiotic predictors of tick (Dermacentor variabilis) abundance and engorgement on free-ranging raccoons (Procyon lotor)
复制标题
自由放养浣熊 (Procyon lotor) 蜱 (Dermacentor variabilis) 丰度和肿胀的生物和非生物预测因子
作者：
R. Monello;M. Gompper
总结我们研究了非生物和生物因素对成年变异革蜱附着和充血能力的相对重要性，这些能力跨越10个自由放养的浣熊种群（Procyon lotor）。我们开发了一个先验模型，代表明确的假设的基础上，文献和测试的能力，这些模型来解释非充满和充满（充满血液）蜱虫侵扰使用广义线性模型和赤池的信息准则。非生物模型，包括月份和网站的收集显然提供了一个更好的适合非满蜱丰度数据，而生物模型与主机年龄和性别协变量最适合满蜱数据。非生物模型的非充满丰度是上级生物模型，因为大的季节性和站点波动的非充满丰度掩盖了由于主机特性的差异。相反，充满蜱虫丰度的最佳拟合模型仅包括年龄和性别，并表明一旦蜱虫到达宿主，宿主-寄生虫相互作用是雌性蜱虫充血的主要决定因素。宿主种群结构可能会通过减少或增加可以充血、换羽或产卵的总数和比例，对蜱的潜在队列大小产生很大影响。
SUMMARY We examined the relative importance of abiotic and biotic factors on the ability of adult Dermacentor variabilis ticks to attach and engorge with blood across 10 populations of free-ranging raccoons (Procyon lotor). We developed a priori models that represented explicit hypotheses based on the literature and tested the ability of these models to explain non-replete and replete (fully engorged with blood) tick infestation using generalized linear models and Akaike's Information Criterion. Abiotic models that included month and site of collection clearly provided a better fit for non-replete tick abundance data, while biotic models with host age and sex covariates best fit the replete tick data. Abiotic models of non-replete abundance were superior to biotic models because of large seasonal and site fluctuations in non-replete abundance that masked differences due to host characteristics. Conversely, best-fitting models of replete tick abundance included only age and sex and suggest that once a tick has reached a host, host-parasite interactions are the primary determinant of engorgement by female ticks. Host population structure may have a large influence on potential cohort size of ticks by reducing or increasing the total number and proportion that can become engorged and moult or lay eggs.
影响因子：
2.1
作者：
Mark L. Wilson;T. Litwin;Thomas A. Gavin;Mary C. Capkanis;David C. Maclean;Andrew Spielman
通讯作者：
Mark L. Wilson;T. Litwin;Thomas A. Gavin;Mary C. Capkanis;David C. Maclean;Andrew Spielman
影响因子：
2.6
作者：
Craig, LE;Norris, DE;Schwartz, BS
通讯作者：
Schwartz, BS