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@article{1542677,
author = {Blažek, Ján and Zukal, Jan and Bandouchova, Hana and Berková, Hana and Kovacova, Veronika and Martínková, Natália and Pikula, Jiri and Řehák, Zdeněk and Skrabanek, Pavel and Bartonička, Tomáš},
article_location = {OXFORD},
article_number = {1},
doi = {http://dx.doi.org/10.1016/j.jtherbio.2019.04.002},
keywords = {Clustering behaviour; Myotis myotis; Synchronised rewarming; Torpor bout; Normothermic and cold arousals},
language = {eng},
issn = {0306-4565},
journal = {Journal of Thermal Biology},
title = {Numerous cold arousals and rare arousal cascades as a hibernation strategy in European Myotis bats},
url = {https://www.sciencedirect.com/science/article/pii/S0306456518303826},
volume = {82},
year = {2019}
}
TY - JOUR
ID - 1542677
AU - Blažek, Ján - Zukal, Jan - Bandouchova, Hana - Berková, Hana - Kovacova, Veronika - Martínková, Natália - Pikula, Jiri - Řehák, Zdeněk - Skrabanek, Pavel - Bartonička, Tomáš
PY - 2019
TI - Numerous cold arousals and rare arousal cascades as a hibernation strategy in European Myotis bats
JF - Journal of Thermal Biology
VL - 82
IS - 1
SP - 150-156
EP - 150-156
PB - Pergamon Press
SN - 03064565
KW - Clustering behaviour
KW - Myotis myotis
KW - Synchronised rewarming
KW - Torpor bout
KW - Normothermic and cold arousals
UR - https://www.sciencedirect.com/science/article/pii/S0306456518303826
L2 - https://www.sciencedirect.com/science/article/pii/S0306456518303826
N2 - Hibernating bats optimise the duration of torpor bouts and arousals in relation to hibernaculum microclimatic conditions and fat reserves. Clustering has significant physiological and ecological benefits, promoting successful hibernation of individuals. Such aggregations may help maintain optimal temperatures, allowing better energy utilisation than in solitarily bats. However, aroused bats in a cluster could conceivably disturb those still hibernating, starting an energy-demanding arousal process. Our study was conducted over two winters in two different hibernacula (cave and mine) in the Czech Republic, where Greater mouse-eared bats (Myotis myotis) have previously been diagnosed with white-nose syndrome. In 118 arousal episodes we recorded 193 individual arousals in which a warming phase was observed, 135 (69.9%) being cold arousals, where bats ceased increasing their body temperatures at <= 10 degrees C. The remaining arousals were standard normothermic arousals, where body (fur) surface temperatures reached > 20 degrees C. Cold arousals occurred during the mid- and late hibernation periods, suggesting they were a response to disturbance by a neighbour in the same cluster. Arousal cascades, where bats aroused in series, were rare (12.7%) and reached a maximum in mid-January. Our data suggest that Myotis bats prolong their torpor bouts using numerous cold arousals but few arousal cascades. Upon arrival of a bat, the clustered bats show tolerance to disturbing by conspecifics.
ER -
BLAŽEK, Ján, Jan ZUKAL, Hana BANDOUCHOVA, Hana BERKOVÁ, Veronika KOVACOVA, Natália MARTÍNKOVÁ, Jiri PIKULA, Zdeněk ŘEHÁK, Pavel SKRABANEK and Tomáš BARTONIČKA. Numerous cold arousals and rare arousal cascades as a hibernation strategy in European Myotis bats. \textit{Journal of Thermal Biology}. OXFORD: Pergamon Press, 2019, vol.~82, No~1, p.~150-156. ISSN~0306-4565. Available from: https://dx.doi.org/10.1016/j.jtherbio.2019.04.002.
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