2019
Numerous cold arousals and rare arousal cascades as a hibernation strategy in European Myotis bats
BLAŽEK, Ján; Jan ZUKAL; Hana BANDOUCHOVA; Hana BERKOVÁ; Veronika KOVACOVA et. al.Základní údaje
Originální název
Numerous cold arousals and rare arousal cascades as a hibernation strategy in European Myotis bats
Autoři
BLAŽEK, Ján; Jan ZUKAL; Hana BANDOUCHOVA; Hana BERKOVÁ; Veronika KOVACOVA; Natália MARTÍNKOVÁ; Jiri PIKULA; Zdeněk ŘEHÁK; Pavel SKRABANEK a Tomáš BARTONIČKA
Vydání
Journal of Thermal Biology, OXFORD, Pergamon Press, 2019, 0306-4565
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.361
Kód RIV
RIV/00216224:14310/19:00110016
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000470799500018
EID Scopus
2-s2.0-85064432669
Klíčová slova anglicky
Clustering behaviour; Myotis myotis; Synchronised rewarming; Torpor bout; Normothermic and cold arousals
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 8. 4. 2020 10:08, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
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.
Návaznosti
| MUNI/A/1436/2018, interní kód MU |
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