Temperature perturbation of cellular host-microbe interactions explains continent-wide endosymbiont prevalence

Michael Hague, J. Dylan Shropshire, Chelsey Caldwell, John Statz, Kimberly Stanek, William Conner & Brandon Cooper
Endosymbioses influence host physiology, reproduction, and fitness, but these relationships require efficient microbe transmission between host generations to persist. Maternally transmitted Wolbachia are the most common known endosymbionts, but their frequencies vary widely within and among host populations for unknown reasons. Here we integrate genomic, cellular, and phenotypic analyses with mathematical models to provide an unexpectedly simple explanation for global wMel Wolbachia prevalence in Drosophila melanogaster. Cooling temperatures decrease wMel cellular abundance at a key...
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