Cover Picture and Issue Information

This month’s cover image shows a Mountain‐yellow legged frog ( Rana muscosa ), an endangered amphibian living in high elevation lakes and streams in California’s Sierra Nevada mountains. This species has experienced drastic population declines across its native range largely due to the devastating effects of the amphibian chytrid fungus. This fungal pathogen infects the skin of amphibians as they reside in their aquatic habitats, eventually leading to amphibian morbidity and often death. In the related article, Wilber et al. build a novel framework for linking individual‐level measurements of hostpathogen interactions to population‐level predictions of epizootic dynamics. The authors use this modeling framework to gain insight into the temperature‐dependent dynamics of chytrid fungus‐induced Mountainyellow legged frog declines. It can also be used to understand the dynamics of other diseases of conservation concern such as white‐nose syndrome in bats and facial tumour disease in Tasmanian devils. Photo credit: © Mark Wilber