扭曲性别比率的微生物加剧了在可变环境中关节动物灭绝的风险
Adam M Fisher1, Robert J Knell2, Tom A R Price3
1School of Biological and Behavioural Sciences Queen Mary University of London London UK.
Ecology and evolution
|April 4, 2024
概括
母性遗传性比扭曲微生物 (SRDMs),使后代变得女性化,增加关节动物种群的灭绝风险. 这种风险在变化的环境中被放大,传播率和性别比率偏差是灭绝的关键驱动因素.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 微生物学 微生物学
背景情况:
- 母性遗传性性别比例扭曲微生物 (SRDM) 在关节动物中很普遍,经常导致女性偏差的性别比例.
- SRDMs可以通过杀死男性,女性化或伴生生殖等机制影响宿主群体,从而导致生态和进化转变.
- 现有的研究不成比例地关注杀死男性的SRDM,忽视了其他机制及其对关节动物多样性的更广泛影响.
研究的目的:
- 研究女性化SRDM对关节动物种群灭绝风险的影响,特别是在不断变化的环境中.
- 模拟微生物诱导女性化的流行病学,作为性别比率扭曲的研究不足的机制.
- 确定影响灭绝风险的关键流行病学和环境因素.
主要方法:
- 开发了一个基于个体的模型来模拟在女性化SRDM感染下宿主群体动态.
- 在各种环境变化和流行病学情景中评估灭绝风险.
- 确定了导致种群灭绝的特定特征和机制.
主要成果:
- 女性化SRDM显著增加关节动物种群灭绝的风险.
- 环境的变化加剧了女性化物所带来的灭绝风险.
- 传播率成为影响灭绝的最关键的流行病学因素,性别比例偏差被确定为驱动灭绝的主要机制.
结论:
- 女性化SRDM对关节动物种群的生存能力构成重大威胁.
- SRDMs,特别是女性化剂,是关节动物对环境变化的弹性至关重要的决定因素.
- 了解各种SRDM机制对于预测和减轻关节动物数量下降至关重要.
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