Long-term patterns of cave-exiting activity of hibernating bats in western North America

Abstract Understanding frequency and variation of cave-exiting activity after arousal from torpor of hibernating bats is important for bat ecology and conservation, especially considering white-nose syndrome. In winter from 2011 to 2018, we acoustically monitored, and counted in hibernacula, two spe...

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Autores principales: Jericho C. Whiting, Bill Doering, Ken Aho, Jason Rich
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/1630f97363de474db333f369c5d68afe
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spelling oai:doaj.org-article:1630f97363de474db333f369c5d68afe2021-12-02T15:51:15ZLong-term patterns of cave-exiting activity of hibernating bats in western North America10.1038/s41598-021-87605-02045-2322https://doaj.org/article/1630f97363de474db333f369c5d68afe2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87605-0https://doaj.org/toc/2045-2322Abstract Understanding frequency and variation of cave-exiting activity after arousal from torpor of hibernating bats is important for bat ecology and conservation, especially considering white-nose syndrome. In winter from 2011 to 2018, we acoustically monitored, and counted in hibernacula, two species of conservation concern—western small-footed myotis (Myotis ciliolabrum) and Townsend’s big-eared bats (Corynorhinus townsendii)—in 9 caves located in important habitat for these species in western North America. We investigated if cave-exiting activity differed by species, cave, number of hibernating bats, moon phase, and weather variables. Both species exited hibernacula during all winter months, but most activity occurred in March followed by November. Although we counted almost 15 times more Townsend’s big-eared bats during hibernacula surveys, we documented western small-footed myotis exiting caves 3 times more than Townsend’s big-eared bats. Cave-exiting activity increased with increasing number of hibernating bats, but more so for western small-footed myotis. Both species of bats were active during warm weather and low wind speeds. Western small-footed myotis were more active during colder temperatures, higher wind speeds, and greater change in barometric pressure than Townsend’s big-eared bats. Our results provide a long-term dataset of cave-exiting activity after arousal from torpor during hibernation for these species before the arrival of white-nose syndrome.Jericho C. WhitingBill DoeringKen AhoJason RichNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Jericho C. Whiting
Bill Doering
Ken Aho
Jason Rich
Long-term patterns of cave-exiting activity of hibernating bats in western North America
description Abstract Understanding frequency and variation of cave-exiting activity after arousal from torpor of hibernating bats is important for bat ecology and conservation, especially considering white-nose syndrome. In winter from 2011 to 2018, we acoustically monitored, and counted in hibernacula, two species of conservation concern—western small-footed myotis (Myotis ciliolabrum) and Townsend’s big-eared bats (Corynorhinus townsendii)—in 9 caves located in important habitat for these species in western North America. We investigated if cave-exiting activity differed by species, cave, number of hibernating bats, moon phase, and weather variables. Both species exited hibernacula during all winter months, but most activity occurred in March followed by November. Although we counted almost 15 times more Townsend’s big-eared bats during hibernacula surveys, we documented western small-footed myotis exiting caves 3 times more than Townsend’s big-eared bats. Cave-exiting activity increased with increasing number of hibernating bats, but more so for western small-footed myotis. Both species of bats were active during warm weather and low wind speeds. Western small-footed myotis were more active during colder temperatures, higher wind speeds, and greater change in barometric pressure than Townsend’s big-eared bats. Our results provide a long-term dataset of cave-exiting activity after arousal from torpor during hibernation for these species before the arrival of white-nose syndrome.
format article
author Jericho C. Whiting
Bill Doering
Ken Aho
Jason Rich
author_facet Jericho C. Whiting
Bill Doering
Ken Aho
Jason Rich
author_sort Jericho C. Whiting
title Long-term patterns of cave-exiting activity of hibernating bats in western North America
title_short Long-term patterns of cave-exiting activity of hibernating bats in western North America
title_full Long-term patterns of cave-exiting activity of hibernating bats in western North America
title_fullStr Long-term patterns of cave-exiting activity of hibernating bats in western North America
title_full_unstemmed Long-term patterns of cave-exiting activity of hibernating bats in western North America
title_sort long-term patterns of cave-exiting activity of hibernating bats in western north america
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/1630f97363de474db333f369c5d68afe
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