免疫力与与雄作斗争的竞争能力之间的权衡
Sina Metzler1, Jessica Kirchner1, Anna V Grasse1
1ISTA (Institute of Science and Technology Austria), Am Campus 1, Klosterneuburg, 3400, Austria.
BMC ecology and evolution
|August 7, 2023
概括
严重的真菌感染会损害雄的战斗能力和生存,即使有强烈的免疫反应. 工人还针对感染的男性,揭示了对疾病风险的社会免疫机制.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 动物行为 动物行为
背景情况:
- 男争夺与女王的交配机会,在战斗和疾病抵抗力之间面临权衡.
- 菌类病原体Metarhizium robertsii可以感染男性,可能会影响他们的竞争能力.
- 殖民地工人可能会干涉男性男性的竞争,影响结果.
研究的目的:
- 调查Metarhizium robertsii感染阶段和强度如何影响对抗男性Cardiocondyla obscurior的成功.
- 了解感染男性免疫反应和竞争能力之间的权衡.
- 探索工人侵略在殖民地疾病管理中的作用.
主要方法:
- 实验性感染雄性 Metarhizium robertsii 在不同阶段和强度.
- 观察和量化男性与男性的战斗行为和成功.
- 监测男性的生存率和免疫反应.
主要成果:
- 严重的感染显著降低了男性的战斗成功和生存率.
- 早期的严重感染,尽管有强烈的免疫反应,导致战斗期间死亡率增加,这表明免疫相关的权衡.
- 晚期严重感染导致高发病率和工人对感染的男性的攻击性增加.
结论:
- 由于快速的免疫反应,男性 Cardiocondyla obscurior 可以耐受轻微的感染,从而保持交配机会.
- 严重的感染会损害战斗能力和生存能力,工作人员积极地去除受感染的个体.
- 工人对受感染的男性的侵略性代表了一种新的社会免疫机制,保护殖民地免受疾病传播.
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