性,密度依赖和城市化水平形成宿主感染由一个有义务的内寄生虫
J Scott MacIvor1,2, Thomas C K Hall2,3
1Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada.
PloS one
|February 12, 2026
概括
城市化影响了单身黄蜂 (Isodontia mexicana) 和它的寄生虫 (Eupathocera auripedis) 的动态. 更高的城市化降低了感染率,树木覆盖对于筑巢至关重要,而开放空间对于食至关重要,这表明在城市环境中存在复杂的宿主-寄生虫相互作用.
科学领域:
- 生态生态学 生态生态学
- 城市生态城市生态学
- 寄生虫学的寄生虫学
背景情况:
- 人类造成的变化,特别是城市化,显著改变了宿主-寄生虫的动态.
- 城市化对这些相互作用的影响在各种物种和传播方式中未得到充分研究.
- 虫是具有复杂生命周期的强制性内寄生虫,因此它们是环境变化的敏感指标.
研究的目的:
- 调查城市化对孤蜂黄蜂Isodontia mexicana及其内寄生虫Eupathocera auripedis之间宿主-寄生虫关系的影响.
- 评估不同程度的城市化如何影响黄蜂的大小,风型化率和寄生虫负载.
- 确定影响城市景观宿主寄生虫动态的关键息地特征.
主要方法:
- 一项为期三年的实地研究,使用陷巢来监测墨西哥牙和Eupathocera auripedis
- 在城市化梯度中量化黄蜂数量,风型化流行率和寄生虫负载.
- 对宿主身体大小 (雌雄) 与造型化状态的分析.
- 城市化水平,树木覆盖,开放绿地和宿主-寄生虫变量之间的相关性分析.
主要成果:
- 在321个Isodontia mexicana个体中,有40个被定型,记录了69个Eupathocera auripedis.
- 经过修剪的雄黄蜂比未经修剪的雄黄蜂要小得多;雌黄蜂的大小不受影响.
- 主体丰富度,造型率和每位宿主寄生虫负载均与彼此呈正相关.
- 所有测量的变量随着城市化增加而显著下降,树木覆盖是筑巢息地质量最关键的因素.
结论:
- 城市化对墨西哥牙 (Isodontia mexicana-Eupathocera auripedis) 的宿主-寄生虫系统产生了负面影响.
- 树木覆盖对于筑巢至关重要,而开放的绿地对食至关重要,突出显示了景观结构的重要性.
- 墨西哥牙 (Isodontia mexicana) 中的形可以作为城市环境质量和神秘宿主-寄生虫相互作用的生物指标.
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