White-nose syndrome, winter duration, and pre-hibernation climate impact abundance of reproductive female bats

Sarah K Krueger, Sarah C Williams, Joy M O’Keefe, Gene A Zirkle and Catherine G Haase

PLOS ONE, 2024, vol. 19, issue 4, 1-15

Abstract: White-nose syndrome (WNS) is an infectious disease that disrupts hibernation in bats, leading to premature exhaustion of fat stores. Though we know WNS does impact reproduction in hibernating female bats, we are unsure how these impacts are exacerbated by local climate factors. We compiled data from four southeastern U.S. states and used generalized linear mixed effects models to compare effects of WNS, pre-hibernation climate variables, and winter duration on the number of reproductive females in species across the range of WNS susceptibility. We predicted we would see a decline in the number of reproductive females in WNS-susceptible species, with the effect exaggerated by longer winter durations and pre-hibernation climate variables that lead to reductions in foraging. We found that the number of reproductive females in WNS-susceptible species was positively correlated with pre-hibernation local climate conditions conducive to foraging; however, WNS-susceptible species experienced an overall decline with the presence of WNS and as winter duration increased. Our long-term dataset provides evidence that pre-hibernation climate, specifically favorable summer weather conditions for foraging, greatly influences the reproduction, regardless of WNS status.

Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0298515

DOI: 10.1371/journal.pone.0298515

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