更病态的性别是塑料:热塑性决定了病原体传播中的性别偏见
Nathan J Butterworth1,2,3, Jared Lush1, Kerri J Moore1
1School of Biological Sciences, Monash University, Clayton, Victoria, Australia.
Ecology
|November 24, 2025
概括
感染期间"更生病"的性别取决于温度. 男性偏向的传播发生在寒冷中,而女性偏向的传播发生在温暖中,影响病原体的进化.
科学领域:
- 进化生物学是进化的生物学.
- 病原体动态 病原体动态
- 性别特定的可塑性.
背景情况:
- 性差异影响病原体的传播和进化,但关于"更生病"的性别的概括是不一致的.
- 跨感染阶段的性别偏见的特定变异性挑战了简单的预测.
- 性特异性可塑性提供了一个框架,以了解感染是如何被性,病原体和环境相互作用塑造的.
研究的目的:
- 量化性别特定的可塑性如何塑造Daphnia magna-Pasteuria ramosa系统中的易感性,病原体负载和传播.
- 研究温度和病原体密度对特定性别感染结果的影响.
主要方法:
- 温度 (三级) 和病原体 (Pasteuria ramosa) 密度 (七级) 的实验操纵.
- 测量感染结果 (易感性,病原体负载,传播) 在雄性和雌性大夫尼亚大夫尼亚.
- 对不同感染阶段和环境条件的性别特异性可塑性的分析.
主要成果:
- 在不同感染阶段观察到独特的可塑性形式 (等效,性别特异,分歧).
- 整合可塑性揭示了取决于温度的传播偏差:在低温时男性偏差,在高温时女性偏差.
- 性别特定的热可塑性以温度依赖的方式决定了"更生病"的性别.
结论:
- 性别特定的热可塑性是确定"更生病"的性别的一个关键因素.
- 温度依赖的传播偏差对病原体的传播和在气候变化中的进化有重大影响.
- 了解性-病原体-环境相互作用对于预测疾病动态至关重要.
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