Increasingly unpredictable swings in the weather are making frogs more vulnerable to the deadly chytrid fungus, according to a new study. In a series of tests, scientists at Oakland University in Michigan exposed Cuban treefrogs living under a variety of conditions in laboratory incubators to chytridiomycosis, a highly infectious fungal disease that has decimated amphibian species globally. The scientists found that frogs that were exposed to unpredictable temperature changes were more susceptible to the disease. For example, frogs that were shifted to incubators at a temperature of 15 degrees C (59 degrees F) after spending four weeks at a temperature of 25 C (77 F) were far more likely to suffer infections than those frogs already accustomed to living at 15 C. According to Thomas Rafell, an Oakland University researcher and lead author of the study, the fungus was likely able to adapt faster to the temperature shift because it is smaller and has a shorter generation time than its host. The study was published in the journal Nature Climate Change.
Shifting Climate Makes Frogs More Vulnerable to Disease, Study Says
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