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季节性寄生虫中中间潜伏策略的演变

Hannelore MacDonald^1,2, Dustin Brisson¹

¹Department of Biology, University of Pennsylvania, Philadelphia, PA, United States.

Journal of evolutionary biology

|February 8, 2024

概括

季节性宿主活动影响寄生虫的进化,选择中间潜伏期,并保持多种稳定策略,即使对于非强制性杀虫寄生虫. 这扩大了对寄生虫生命历史进化的理解.

科学领域:

进化生物学是进化的生物学.
寄生虫学的寄生虫学
理论生态学的理论生态学.

背景情况:

寄生虫生命史进化理论通常依赖于传播和延迟之间的权衡.
季节性宿主活动已被证明会影响寄生虫的进化,特别是在义务宿主杀虫寄生虫中.
之前的模型表明,季节性模式可以导致义务杀手的进化双稳定性 (多个稳定的策略).

研究的目的:

调查季节性宿主活动是否也可以驱动非强制性宿主杀虫寄生虫的寄生虫进化.
为了确定季节性模式是否可以在没有直接传输延迟权衡的情况下选择中间的寄生虫延迟期.
为了测试由于宿主季节性而导致的非强制性杀手寄生虫系统中是否发生进化双稳定性.

主要方法:

寄生虫生命史策略的理论建模.
在季节性宿主活动模式下分析进化动态.
对强制性与非强制性宿主杀手寄生虫的结果进行比较.

主要成果:

季节性宿主活动可以在非强制性杀虫寄生虫中选择中间的寄生虫延迟期,即使没有直接的传播延迟权衡.
宿主季节性可以保持多个进化稳定的寄生虫生命史策略 (进化双稳定性) 对于非强制性杀手.
这些发现符合并扩展了从义务宿主杀手寄生虫模型中得出的先前结论.

结论:

宿主季节性活动是寄生虫生命史进化中的重要选择力.
在季节性条件下,控制寄生虫延迟和进化稳定的原则广泛适用,包括非强制性杀伤系统.
这项研究将现有理论框架的适用性扩展到更广泛的疾病系统.

关键词:

进化演化演化演化演化演化演化演化寄生虫寄生虫是一种寄生虫.现象学 (phenology) 是一种现象学.季节性的季节性.

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