对寄生虫的防御性耐受性与子的性选择相关
Juan José Soler1, Anders Pape Møller2
1Depto. Ecología Funcional Y Evolutiva, Estación Experimental de Zonas Áridas, Sacramento S/N, La Cañada de San Urbano, 04120, Almería, Spain. jsoler@eeza.csic.es.
Oecologia
|July 18, 2023
概括
二次性特征可能是寄生虫耐药性和防御性耐受性的信号. 谷仓子显示尾巴的长度与寄生虫负载有关,巢穴大小与耐受性有关,支持这个想法.
科学领域:
- 进化生物学 进化生物学
- 行为生态学 行为生态学
- 动物学 动物学
背景情况:
- 寄生虫介导的性选择是进化生物学中一个长期存在的主题.
- 现有的研究往往侧重于二次性特征作为对寄生虫耐药性的指标.
- 防御性耐受性在性选择中的作用仍然不太被探索.
研究的目的:
- 调查二次性特征是否同时表明了寄生虫耐药性和防御性耐受性.
- 为了探索繁殖成功,寄生和性特征之间的关系在谷仓 (Hirundo rustica).
- 引入防御性耐受性作为理解寄生虫媒介性选择的关键因素.
主要方法:
- 对一个谷仓子群体的30年数据集的分析.
- 估计个人对外寄生虫 (虫) 的耐受性,使用繁殖成功与寄生虫的倾斜度.
- 探索性特征 (尾巴长度,巢穴大小) 与寄生虫负载/耐受性之间的关联.
主要成果:
- 尾巴长度与虫的负相关,支持寄生虫耐药性假设.
- 巢穴大小与对虫的耐受性有积极的关系,这表明防御性耐受性发挥了作用.
- 这些发现表明,二次性特征可以反映出对寄生虫的抗性和耐受性.
结论:
- 防御性耐受性是寄生虫媒介性选择的一个至关重要的,但经常被忽视的组成部分.
- 二次性特征可能会进化,表明一个人有能力应对寄生虫,而不仅仅是抵抗它们.
- 纳入防御性耐受性为理解宿主寄生虫系统中的性选择动态提供了更全面的框架.
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