The role of host phenology for parasite transmission.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-01-01 Epub Date: 2020-11-11 DOI:10.1007/s12080-020-00484-5

Hannelore MacDonald, Erol Akçay, Dustin Brisson

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引用次数: 0

Abstract

Phenology is a fundamental determinant of species distributions, abundances, and interactions. In host-parasite interactions, host phenology can affect parasite fitness due to the temporal constraints it imposes on host contact rates. However, it remains unclear how parasite transmission is shaped by the wide range of phenological patterns observed in nature. We develop a mathematical model of the Lyme disease system to study the consequences of differential tick developmental-stage phenology for the transmission of B. burgdorferi. Incorporating seasonal tick activity can increase B. burgdorferi fitness compared to continuous tick activity but can also prevent transmission completely. B. burgdorferi fitness is greatest when the activity period of the infectious nymphal stage slightly precedes the larval activity period. Surprisingly, B. burgdorferi is eradicated if the larval activity period begins long after the end of nymphal activity due to a feedback with mouse population dynamics. These results highlight the importance of phenology, a common driver of species interactions, for the fitness of a parasite.

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寄主物候在寄生虫传播中的作用。

物候是物种分布、丰度和相互作用的基本决定因素。在宿主-寄生虫相互作用中，寄主物候可以影响寄主的适应性，因为它对寄主接触率施加了时间限制。然而，目前尚不清楚在自然界中观察到的广泛物候模式如何塑造寄生虫传播。我们开发了莱姆病系统的数学模型，以研究不同蜱发育阶段物候对伯氏疏螺旋体传播的影响。与持续的蜱虫活动相比，结合季节性蜱虫活动可以增加伯氏疏螺旋体的适应性，但也可以完全防止传播。当感染若虫活动期略早于幼虫活动期时，伯氏疏螺旋体的适合度最高。令人惊讶的是，如果幼虫活动期在若虫活动结束后很长时间才开始，由于小鼠种群动态的反馈，伯氏疏螺旋体被根除。这些结果突出了物候学的重要性，物候学是物种相互作用的共同驱动因素，对寄生虫的适应性很重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.