Interspecific variation in evaporative water loss and temperature response, but not metabolic rate, among hibernating bats

• DOI: 10.1038/s41598-021-00266-x
• Publication Date: 2021-10-21T10:04:42Z
• Authors: Liam P. McGuire; Nathan W. Fuller; Yvonne A. Dzal; Catherine G. Haase; Brandon J. Klüg-B...; Kirk A. Silas; Raina K. Plowright; Cori L. Lausen; Craig K. R. Willis; Sarah H. Olson
• Keywords: Hibernation; Turnover

Abstract Hibernation is widespread among mammals in a variety of environmental contexts. However, few experimental studies consider interspecific comparisons, which may provide insight into general patterns hibernation strategies. We studied 13 species free-living bats, including populations spread over thousands kilometers and diverse habitats. measured torpid metabolic rate (TMR) evaporative water loss (two key parameters for understanding energetics) across range temperatures. There was no difference minimum TMR (i.e., all achieved similarly low rate) but the temperature associated with varied species. The defended (temperature below increased) from 8 °C to < 2 Conversely, species, clustered two groups representing high loss. Notably, that have suffered population declines due white-nose syndrome fall group less affected group. Documenting physiological diversity, ecological implications, contributes broader biodiversity, help predict are at greater risk anthropogenic stressors.