Cold snaps lead to a 5-fold increase or a 3-fold decrease in disease proliferation depending on the baseline temperature.

IF 4.4 1区 生物学 Q1 BIOLOGY
Niamh McCartan, Jeremy Piggott, Sadie DiCarlo, Pepijn Luijckx
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引用次数: 0

Abstract

Background: Climate change is driving increased extreme weather events that can impact ecology by moderating host-pathogen interactions. To date, few studies have explored how cold snaps affect disease prevalence and proliferation. Using the Daphnia magna-Ordospora colligata host-parasite system, a popular model system for environmentally transmitted diseases, the amplitude and duration of cold snaps were manipulated at four baseline temperatures, 10 days post-exposure, with O. colligata fitness recorded at the individual level.

Results: Cold snaps induced a fivefold increase or a threefold decrease in parasite burden relative to baseline temperature, with complex nuances and varied outcomes resulting from different treatment combinations. Both amplitude and duration can interact with the baseline temperature highlighting the complexity and baseline dependence of cold snaps. Furthermore, parasite fitness, i.e., infection prevalence and burden, were simultaneously altered in opposite directions in the same cold snap treatment.

Conclusions: We found that cold snaps can yield complicated outcomes that are unique from other types of temperature variation (for example, heatwaves). These results underpin the challenges and complexity in understanding and predicting how climate and extreme weather may alter disease under global change.

根据基线温度的不同,寒流会导致病害扩散增加 5 倍或减少 3 倍。
背景:气候变化导致极端天气事件增多,这些事件会通过调节宿主与病原体之间的相互作用来影响生态。迄今为止,很少有研究探讨寒流如何影响疾病的流行和扩散。通过使用大型水蚤-Ordospora colligata 宿主-寄生虫系统(一种流行的环境传播疾病模型系统),在四种基线温度下操纵寒流的幅度和持续时间,在暴露后 10 天记录 O. colligata 在个体水平上的适应性:结果:相对于基线温度,寒流会导致寄生虫数量增加五倍或减少三倍,不同的处理组合会产生复杂的细微差别和不同的结果。振幅和持续时间都会与基线温度相互作用,这凸显了寒流的复杂性和基线依赖性。此外,寄生虫的适应性,即感染率和负担,在相同的冷冻处理中同时发生相反方向的改变:我们发现,寒流会产生复杂的结果,与其他类型的温度变化(如热浪)截然不同。这些结果凸显了理解和预测全球变化下气候和极端天气如何改变疾病所面临的挑战和复杂性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
BMC Biology
BMC Biology 生物-生物学
CiteScore
7.80
自引率
1.90%
发文量
260
审稿时长
3 months
期刊介绍: BMC Biology is a broad scope journal covering all areas of biology. Our content includes research articles, new methods and tools. BMC Biology also publishes reviews, Q&A, and commentaries.
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