Wintering Conditions and Heat Loss during Hibernation in the Brown Long-Eared Bat

The aim of this study was to estimate heat loss in the brown long-eared bat during hibernation depending on the refugioclimate conditions. The measured values of refugioclimate parameters were: ambient temperature (Ta) 3–10 °C, relative humidity (Rh) 74–98% and air velocity (v) 0.06–0.95 m/s. Heat l...

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Main Authors: Grzegorz Kłys, Joanna Makuchowska-Fryc
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/14/2/716
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author Grzegorz Kłys
Joanna Makuchowska-Fryc
author_facet Grzegorz Kłys
Joanna Makuchowska-Fryc
author_sort Grzegorz Kłys
collection DOAJ
description The aim of this study was to estimate heat loss in the brown long-eared bat during hibernation depending on the refugioclimate conditions. The measured values of refugioclimate parameters were: ambient temperature (Ta) 3–10 °C, relative humidity (Rh) 74–98% and air velocity (v) 0.06–0.95 m/s. Heat loss was calculated using convective heat transfer equations. Mean heat loss amounted to 4 W/m<sup>2</sup>. The results were compared to the heat loss calculated based on the fat burned during hibernation. Bats flying into underground systems during the hibernation period were captured and their body mass was measured. A loss of body mass of 2.6 g over the 126 days of hibernation was observed. Heat loss equalled 3.115 W/m<sup>2</sup>K.The presented method of calculating energy expenditure allows for non-invasive monitoring of the heat and fat losses of bats during hibernation. Such research may find application in designing artificial wintering sites.
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spelling doaj.art-0a0ee183695d4e28bbda60fcad69bc412024-01-29T13:43:55ZengMDPI AGApplied Sciences2076-34172024-01-0114271610.3390/app14020716Wintering Conditions and Heat Loss during Hibernation in the Brown Long-Eared BatGrzegorz Kłys0Joanna Makuchowska-Fryc1Institute of Biology, University of Opole, ul. Oleska 22, 45-052 Opole, PolandInstitute of Environmental Engineering and Biotechnology, University of Opole, ul. Kardynała B. Kominka6, 6a, 45-032 Opole, PolandThe aim of this study was to estimate heat loss in the brown long-eared bat during hibernation depending on the refugioclimate conditions. The measured values of refugioclimate parameters were: ambient temperature (Ta) 3–10 °C, relative humidity (Rh) 74–98% and air velocity (v) 0.06–0.95 m/s. Heat loss was calculated using convective heat transfer equations. Mean heat loss amounted to 4 W/m<sup>2</sup>. The results were compared to the heat loss calculated based on the fat burned during hibernation. Bats flying into underground systems during the hibernation period were captured and their body mass was measured. A loss of body mass of 2.6 g over the 126 days of hibernation was observed. Heat loss equalled 3.115 W/m<sup>2</sup>K.The presented method of calculating energy expenditure allows for non-invasive monitoring of the heat and fat losses of bats during hibernation. Such research may find application in designing artificial wintering sites.https://www.mdpi.com/2076-3417/14/2/716chiroptera<i>Plecotusauritus</i>thermoregulationmicroclimate selectionhibernation monitoring
spellingShingle Grzegorz Kłys
Joanna Makuchowska-Fryc
Wintering Conditions and Heat Loss during Hibernation in the Brown Long-Eared Bat
Applied Sciences
chiroptera
<i>Plecotusauritus</i>
thermoregulation
microclimate selection
hibernation monitoring
title Wintering Conditions and Heat Loss during Hibernation in the Brown Long-Eared Bat
title_full Wintering Conditions and Heat Loss during Hibernation in the Brown Long-Eared Bat
title_fullStr Wintering Conditions and Heat Loss during Hibernation in the Brown Long-Eared Bat
title_full_unstemmed Wintering Conditions and Heat Loss during Hibernation in the Brown Long-Eared Bat
title_short Wintering Conditions and Heat Loss during Hibernation in the Brown Long-Eared Bat
title_sort wintering conditions and heat loss during hibernation in the brown long eared bat
topic chiroptera
<i>Plecotusauritus</i>
thermoregulation
microclimate selection
hibernation monitoring
url https://www.mdpi.com/2076-3417/14/2/716
work_keys_str_mv AT grzegorzkłys winteringconditionsandheatlossduringhibernationinthebrownlongearedbat
AT joannamakuchowskafryc winteringconditionsandheatlossduringhibernationinthebrownlongearedbat