Effect of capture on stress-axis measures in endangered little brown bats (Myotis lucifugus). Edwards, P., Boonstra, R., Bosson, C., Harms, N., Kukka, P., Willis, C., & Jung, T. Journal of Mammalogy, 103:91–99, January, 2022. doi abstract bibtex Little brown bats (Myotis lucifugus) are a widely distributed species in North America that have been decimated by the fungal disease white-nose syndrome. Little brown bats are the focus of monitoring and research initiatives that often include capturing and handling free-ranging individuals. We examined the stress response of 198 adult female little brown bats after being captured from three bat houses, during the summer. Our objective was to inform best practices to researchers capturing and handling bats in the wild. We compared the stress response among bats held for \textless 3 min (baseline), 15 – 30 min, or \textgreater 30 min, and then among bats held alone or in a group with conspecifics. We measured the levels of plasma total and free cortisol, maximum corticosteroid binding capacity (MCBC), and blood glucose. Relative to baseline, total and free cortisol levels were significantly higher in bats held for 15 – 30 min, and higher still in those held for \textgreater 30 min. Blood glucose levels were elevated after \textgreater 30 min of holding. MCBC levels showed no differences among holding times. We detected a weak effect of social holding condition, with solitary-held bats having lower total cortisol levels than group-held bats, but MCBC, free cortisol, and blood glucose levels showed no effect of social holding condition. Our work supports the recovery of little brown bats by examining effects of capture and informing best practices for researchers. Our findings demonstrate that capture time should be minimized, and suggest that little brown bats should be handled and released within 30 min of capture as means of reducing stress. Further, solitary holding did not appear to increase stress measures, which supports holding bats individually after capture, instead of in groups, to reduce risk of pathogen and parasite transmission.
@article{edwards_effect_2022,
title = {Effect of capture on stress-axis measures in endangered little brown bats ({Myotis} lucifugus)},
volume = {103},
doi = {10.1093/jmammal/gyab135},
abstract = {Little brown bats (Myotis lucifugus) are a widely distributed species in North America that have been decimated by the fungal disease white-nose syndrome. Little brown bats are the focus of monitoring and research initiatives that often include capturing and handling free-ranging individuals. We examined the stress response of 198 adult female little brown bats after being captured from three bat houses, during the summer. Our objective was to inform best practices to researchers capturing and handling bats in the wild. We compared the stress response among bats held for {\textless} 3 min (baseline), 15 – 30 min, or {\textgreater} 30 min, and then among bats held alone or in a group with conspecifics. We measured the levels of plasma total and free cortisol, maximum corticosteroid binding capacity (MCBC), and blood glucose. Relative to baseline, total and free cortisol levels were significantly higher in bats held for 15 – 30 min, and higher still in those held for {\textgreater} 30 min. Blood glucose levels were elevated after {\textgreater} 30 min of holding. MCBC levels showed no differences among holding times. We detected a weak effect of social holding condition, with solitary-held bats having lower total cortisol levels than group-held bats, but MCBC, free cortisol, and blood glucose levels showed no effect of social holding condition. Our work supports the recovery of little brown bats by examining effects of capture and informing best practices for researchers. Our findings demonstrate that capture time should be minimized, and suggest that little brown bats should be handled and released within 30 min of capture as means of reducing stress. Further, solitary holding did not appear to increase stress measures, which supports holding bats individually after capture, instead of in groups, to reduce risk of pathogen and parasite transmission.},
journal = {Journal of Mammalogy},
author = {Edwards, Phoebe and Boonstra, Rudy and Bosson, Curtis and Harms, N. and Kukka, Piia and Willis, Craig and Jung, Thomas},
month = jan,
year = {2022},
pages = {91--99},
}
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Our objective was to inform best practices to researchers capturing and handling bats in the wild. We compared the stress response among bats held for \\textless 3 min (baseline), 15 – 30 min, or \\textgreater 30 min, and then among bats held alone or in a group with conspecifics. We measured the levels of plasma total and free cortisol, maximum corticosteroid binding capacity (MCBC), and blood glucose. Relative to baseline, total and free cortisol levels were significantly higher in bats held for 15 – 30 min, and higher still in those held for \\textgreater 30 min. Blood glucose levels were elevated after \\textgreater 30 min of holding. MCBC levels showed no differences among holding times. We detected a weak effect of social holding condition, with solitary-held bats having lower total cortisol levels than group-held bats, but MCBC, free cortisol, and blood glucose levels showed no effect of social holding condition. Our work supports the recovery of little brown bats by examining effects of capture and informing best practices for researchers. Our findings demonstrate that capture time should be minimized, and suggest that little brown bats should be handled and released within 30 min of capture as means of reducing stress. Further, solitary holding did not appear to increase stress measures, which supports holding bats individually after capture, instead of in groups, to reduce risk of pathogen and parasite transmission.","journal":"Journal of Mammalogy","author":[{"propositions":[],"lastnames":["Edwards"],"firstnames":["Phoebe"],"suffixes":[]},{"propositions":[],"lastnames":["Boonstra"],"firstnames":["Rudy"],"suffixes":[]},{"propositions":[],"lastnames":["Bosson"],"firstnames":["Curtis"],"suffixes":[]},{"propositions":[],"lastnames":["Harms"],"firstnames":["N."],"suffixes":[]},{"propositions":[],"lastnames":["Kukka"],"firstnames":["Piia"],"suffixes":[]},{"propositions":[],"lastnames":["Willis"],"firstnames":["Craig"],"suffixes":[]},{"propositions":[],"lastnames":["Jung"],"firstnames":["Thomas"],"suffixes":[]}],"month":"January","year":"2022","pages":"91–99","bibtex":"@article{edwards_effect_2022,\n\ttitle = {Effect of capture on stress-axis measures in endangered little brown bats ({Myotis} lucifugus)},\n\tvolume = {103},\n\tdoi = {10.1093/jmammal/gyab135},\n\tabstract = {Little brown bats (Myotis lucifugus) are a widely distributed species in North America that have been decimated by the fungal disease white-nose syndrome. Little brown bats are the focus of monitoring and research initiatives that often include capturing and handling free-ranging individuals. We examined the stress response of 198 adult female little brown bats after being captured from three bat houses, during the summer. Our objective was to inform best practices to researchers capturing and handling bats in the wild. We compared the stress response among bats held for {\\textless} 3 min (baseline), 15 – 30 min, or {\\textgreater} 30 min, and then among bats held alone or in a group with conspecifics. We measured the levels of plasma total and free cortisol, maximum corticosteroid binding capacity (MCBC), and blood glucose. Relative to baseline, total and free cortisol levels were significantly higher in bats held for 15 – 30 min, and higher still in those held for {\\textgreater} 30 min. Blood glucose levels were elevated after {\\textgreater} 30 min of holding. MCBC levels showed no differences among holding times. We detected a weak effect of social holding condition, with solitary-held bats having lower total cortisol levels than group-held bats, but MCBC, free cortisol, and blood glucose levels showed no effect of social holding condition. Our work supports the recovery of little brown bats by examining effects of capture and informing best practices for researchers. Our findings demonstrate that capture time should be minimized, and suggest that little brown bats should be handled and released within 30 min of capture as means of reducing stress. Further, solitary holding did not appear to increase stress measures, which supports holding bats individually after capture, instead of in groups, to reduce risk of pathogen and parasite transmission.},\n\tjournal = {Journal of Mammalogy},\n\tauthor = {Edwards, Phoebe and Boonstra, Rudy and Bosson, Curtis and Harms, N. and Kukka, Piia and Willis, Craig and Jung, Thomas},\n\tmonth = jan,\n\tyear = {2022},\n\tpages = {91--99},\n}\n\n","author_short":["Edwards, P.","Boonstra, R.","Bosson, C.","Harms, N.","Kukka, P.","Willis, C.","Jung, T."],"key":"edwards_effect_2022","id":"edwards_effect_2022","bibbaseid":"edwards-boonstra-bosson-harms-kukka-willis-jung-effectofcaptureonstressaxismeasuresinendangeredlittlebrownbatsmyotislucifugus-2022","role":"author","urls":{},"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/zotero/WildlifeTourismAustralia","dataSources":["3nygFjyMnirSMbcF3"],"keywords":[],"search_terms":["effect","capture","stress","axis","measures","endangered","little","brown","bats","myotis","lucifugus","edwards","boonstra","bosson","harms","kukka","willis","jung"],"title":"Effect of capture on stress-axis measures in endangered little brown bats (Myotis lucifugus)","year":2022}