在佛罗里达州灌丛松鸦整个疫情期间，对先天免疫和身体状况的选择。
Selection on innate immunity and body condition in Florida scrub-jays throughout an epidemic.
机构信息
Department of Biology, University of Memphis, Memphis, TN 38152, USA.
出版信息
Biol Lett. 2010 Aug 23;6(4):552-4. doi: 10.1098/rsbl.2009.1078. Epub 2010 Feb 17.
Abstract
Opportunities to investigate selection in free-living species during a naturally occurring epidemic are rare; however, we assessed innate immunocompetence in Florida scrub-jays before the population suffered the greatest over-winter mortality in 20 years of study. Propitiously, three months prior to the epidemic, we had sampled a number of male breeders to evaluate a suite of physiological measures that are commonly used to estimate the overall health-state of an individual. There was a significant, positive selection gradient for both Escherichia coli bacterial killing capability and body condition, suggesting that directional selection had occurred upon each of these traits during the disease epidemic.
摘要
在自然发生的传染病期间，有机会调查自由生活物种中的选择的情况很少；然而，在 20 年的研究中，佛罗里达州灌丛鸦的种群经历了有史以来最严重的越冬死亡率之前，我们评估了它们的先天免疫能力。幸运的是，在疫情爆发前三个月，我们对一些雄性繁殖者进行了采样，以评估一系列常用于估计个体整体健康状况的生理指标。大肠杆菌杀菌能力和身体状况都存在显著的正选择梯度，这表明在疾病流行期间，这些特征都发生了定向选择。
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