单细胞共生体对其甲虫宿主的长期和短期影响
Alessa Barber1, Etje Borsutzky1, Caroline Müller2,3
1Department of Chemical Ecology, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany.
Scientific reports
|July 9, 2025
概括
目前在末叶甲虫中的格雷加林感染影响了表现和发育,而跨代感染史的影响很小. 这凸显了最近的寄生虫状态如何塑性地调节宿主表型.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 寄生虫学的寄生虫学
背景情况:
- 格雷加林表现出宿主特异性和从寄生主义到互惠主义的范围.
- 与最近的感染状况相比,对宿主的跨代感染史影响的了解很少.
研究的目的:
- 调查感染史和当前感染状况对宿主表现,消耗,行为和Phaedon cochleariae表面形状的影响.
- 在宿主中区分格雷加里纳耳膜感染的短期和长期影响.
主要方法:
- 采用全因数设计来测试感染史 (前几代) 和当前感染状态 (感染或不感染).
- 评估宿主表现 (发育时间,生存,体重,繁殖),消费特征,行为 (活动,大胆性) 和表面形状.
- 利用了子叶甲虫 (Phaedon cochleariae) 和格雷加林寄生虫 (Gregarina cochlearium) 的作用.
主要成果:
- 目前的感染显著影响了发育时间,生存率,体重,生长率和活动,对发育产生了负面影响.
- 感染史显示影响有限,尽管长期感染的个体的生存率最高.
- 生殖不受感染史或当前状态的影响;表面形状保持不变.
结论:
- 目前格雷加林的感染状况诱导了塑性宿主反应,主要对发育产生负面影响.
- 在这些条件下,格雷加林感染的跨代影响在Phaedon cochleariae中似乎是最小的.
- 格雷加林显著调节各种宿主表型,强调了感染状态在宿主-寄生虫相互作用中的重要性.
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