Alternate patterns of temperature variation bring about very different disease outcomes at different mean temperatures

Charlotte Kunze, Pepijn Luijckx, Andrew L. Jackson & Ian Donohui
The dynamics of host-parasite interactions are highly temperature-dependent and may be modified by increasing frequency and intensity of climate-driven heat events. Here, we show that altered patterns of temperature variance lead to an almost order-of-magnitude shift in thermal performance of host and pathogen life history traits over and above the effects of mean temperature and, moreover, that different temperature regimes affect these traits differently. We found that diurnal fluctuations of ±3°C lowered infection rates and...
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