J 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.

Basic information

Original name

Numerous cold arousals and rare arousal cascades as a hibernation strategy in European Myotis bats

Authors

BLAŽEK, Ján (203 Czech Republic, belonging to the institution), Jan ZUKAL (203 Czech Republic, belonging to the institution), Hana BANDOUCHOVA (203 Czech Republic), Hana BERKOVÁ (203 Czech Republic), Veronika KOVACOVA, Natália MARTÍNKOVÁ (203 Czech Republic, belonging to the institution), Jiri PIKULA (203 Czech Republic), Zdeněk ŘEHÁK (203 Czech Republic, belonging to the institution), Pavel SKRABANEK (203 Czech Republic) and Tomáš BARTONIČKA (203 Czech Republic, guarantor, belonging to the institution)

Edition

Journal of Thermal Biology, OXFORD, Pergamon Press, 2019, 0306-4565

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.361

RIV identification code

RIV/00216224:14310/19:00110016

Organization unit

Faculty of Science

UT WoS

000470799500018

Keywords in English

Clustering behaviour; Myotis myotis; Synchronised rewarming; Torpor bout; Normothermic and cold arousals

Tags

International impact, Reviewed
Změněno: 8/4/2020 10:08, Mgr. Marie Šípková, DiS.

Abstract

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.

Links

MUNI/A/1436/2018, interní kód MU
Name: EKologické a EVOluční Principy v populacích obratlovců a jejich parazitů (Acronym: EKEVOP)
Investor: Masaryk University, Category A