疟疾寄生虫可以通过感知宿主内部的两个线索来优化传播投资
Avril Wang1, Megan Ann Greischar2, Nicole Mideo1
1Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada.
PLoS biology
|October 9, 2025
概括
疟疾寄生虫 (Plasmodium spp.) 是一种寄生虫. 可以根据环境因素调整生殖投资. 感知两个非冗余的线索,如红细胞丰富度,优化了传输投资和宿主利用,但降低了对波动的稳定性.
科学领域:
- 进化生物学是进化的生物学.
- 寄生虫学的寄生虫学
- 理论生态学的理论生态学.
背景情况:
- 生殖投资的时间对生物体的健康至关重要.
- 投资策略中的可塑性允许适应环境变化.
- 疟疾寄生虫 (Plasmodium spp.) 是一种寄生虫. 呈现出塑料的繁殖投资,产生传播阶段,以应对宿主和寄生虫因素.
研究的目的:
- 确定疟疾寄生虫使用哪些环境线索来优化传播投资.
- 通过宿主的传染性来衡量最大限度地提高寄生虫健康的线索.
- 扩展塑料投资策略的理论模型用于Plasmodium chabaudi.
主要方法:
- 寄生虫投资策略的理论建模.
- 分析寄生虫的健康状况作为环境暗示感应的函数.
- 一个cue与双cue传感策略的比较.
主要成果:
- 感知单个与寄生虫相关的暗示符可以非线性地改善健康状况,但不能完全复制最佳的时间变化策略或终端投资.
- 感知两个非冗余的线索 (日志转换的感染和未感染的红细胞丰度) 能够准确地跟踪感染,终端投资和最佳的健康恢复.
- 双关键传感导致更高的毒性,但减少了对环境和发育波动的强度.
结论:
- 非冗余的提示传感允许在疟疾寄生虫中进行更优的传播投资.
- 在传感多个线索时,最佳投资和对环境噪声的强度之间存在一个权衡.
- 了解暗示利用提供了对寄生虫进化和宿主-寄生虫动态的见解.
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