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外寄生对果宿主的幼虫产生非消费性影响

Collin J Horn¹, Sarah Robinson¹, Holly Tang¹

¹Department of Biological Sciences, University of Alberta, 11455 Saskatchewan Drive Edmonton, AB, Canada.

|August 11, 2023

概括

寄生虫会对果幼虫的发展产生负面影响,即使没有直接感染. 这些对幼虫的非消费性影响 (NCE) 表明对宿主种群的生态影响更广泛.

科学领域:

生态生态学生态生态学
寄生虫学的寄生虫学
进化生物学进化生物学

背景情况:

捕食者和寄生虫的存在可能会伤害猎物/宿主,影响健康.
暴露于捕食者的发育已知对幼儿生存和成年阶段的负面影响.
寄生虫对宿主幼虫阶段和转移效应的影响尚不清楚.

研究的目的:

为了调查Drosophila nigrospiracula幼虫是否避免在虫线索附近化.
为了确定寄生虫是否对宿主幼虫阶段产生非消耗性影响 (NCE).
测量虫存在对幼虫化率的影响.

主要方法:

竞技场实验使用Drosophila nigrospiracula幼虫和Macrocheles subbadius虫线索进行.
在有或没有虫线索的场地评估了幼虫繁殖地点的偏好.
在实验组之间比较了化率.

主要成果:

在缺乏虫线索的地区,Drosophila幼虫不成比例地化.
与对照场相比,在含有虫线索的场馆中成功化的幼虫较少.
外寄生对虫幼虫施加NCE,尽管幼虫不易感染.

结论:

寄生可以通过非消费性影响对宿主幼虫发育产生负面影响.
这些发现凸显了寄生虫对宿主群体的重大,但往往被低估的影响.
了解NCE对于预测感染环境中的宿主群体动态至关重要.

关键词:

行为免疫力行为免疫力这种植物是Drosophila.马克罗切莱斯 (Macrocheles) 是一个巨大的植物.生命阶段生命阶段通过特征介导的效应.

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