Ecological status of bats (Chiroptera) in winter roosts in eastern Fennoscandia

Belkin, Vladimir; Panchenko, Danila; Tirronen, Konstantin; Yakimova, Alina; Ф.В.Федоров,

doi:10.1134/s1067413615050045

Cited by 12 publications

(2 citation statements)

References 10 publications

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“…The differences in the antioxidant capacity among the studied species can be explained by ecophysiological characteristics of vesper bat species and indicate that M. brandtii, E. nilssonii, and P. auritus have different defense mechanisms against ROS formation during torporarousal cycles. E. nilssonii lives in colder areas with a shorter photoperiod and hibernation of this species occurs at lower temperatures (2.0 ± 0.1 °С) and relative humidity (78.0 ± 0.6%) as compared with other species of bats (M. brandtii, P. auritus, and M. daubentoni), affirming that this species is well adapted to the north's severe conditions (Siivonen and Wermundsen, 2008;Belkin et al, 2015). In contrast, M. brandtii hibernated in the warmer and more comfortable locations and used both energy-saving ways (crevices and clusters) for torpor (Siivonen and Wermundsen, 2008).…”

Section: Discussionmentioning

confidence: 67%

Antioxidant defenses in three vesper bats(Chiroptera: Vespertilionidae) during hibernation

Antonova¹,

Ilyukha²,

Sergina³

et al. 2017

Turk J Zool

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IntroductionMammalian hibernators represent a unique model for the study of adaptation to changes in oxygen consumption (Carey et al., 2003;van Breukelen and Martin, 2015). Physiological parameters such as metabolism and oxygen supply are reduced during torpor (Storey, 2010;Yin et al., 2016). However, torpor is replaced by periods of intensive metabolic activity (arousal), which are characterized by quick warming of the organism (Carey et al., 2003;Storey, 2010). The great burst of reactive oxygen species (ROS) in mitochondrial respiration during the torpor-arousal cycles of bats may lead to the oxidative damage to sensitive tissues (Carey et al., 2003;Sanderson et al., 2013;Yin et al., 2016). The glutathione (GSH) and antioxidant defense enzymes (superoxide dismutase (SOD) and catalase) reduce the effects of ROS (Galano and Alvarez-Idaboy, 2011; Conde-Pérezprina et al., 2012).Along with numerous studies on torpid ground squirrels (Sciuridae)

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Section: Discussionmentioning

confidence: 67%

Antioxidant defenses in three vesper bats(Chiroptera: Vespertilionidae) during hibernation

Antonova¹,

Ilyukha²,

Sergina³

et al. 2017

Turk J Zool

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“…Using prolonged periods of torpor, hibernators can survive on stored fat for months 1 . However, surviving the whole winter season on fat reserves can be a challenge, especially when harsh conditions occur at the end of the winter 7,8 .…”

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confidence: 99%

Temperature driven hibernation site use in the Western barbastelle Barbastella barbastellus (Schreber, 1774)

Bruyn

Gyselings

Kirkpatrick

et al. 2021

Sci Rep

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In temperate regions, winter is characterized by cold temperatures and low food availability. Heterothermic animals can bridge this period by entering a state of torpor characterized by decreased body temperature and reduced metabolic rate. Hibernation site choice is crucial since temperature conditions in the hibernaculum will impact torpor. We analysed temperature-dependent hibernation site use of Barbastella barbastellus. Bats and temperature were monitored in an underground system (1999–2019) and standalone bunkers (2007–2019) in Western Poland. During the winter of 2017–2018 we analysed the thermal variability of the hibernacula. Seasonal variation is higher in bunkers and thus temperatures get colder in winter than in the underground system. On the other hand, short-term variability (thermal variability index) in the bunkers was lower than in the underground system. This makes bunkers a more stable environment to hibernate for cold dwelling bats in warm winters, when temperatures in the bunkers do not get below freezing. Bats use both the warm underground system and the colder bunkers. During the last decade, a continuous series of warm winters occurred and the population of barbastelle bats partly moved from the underground system to the bunkers. These present temperature increases broadened the range of potential hibernation sites for barbastelles. Our study indicates that long-term trends, seasonal variation and short-term variability in temperatures are all important and should be analysed to investigate hibernaculum use by bats. Our study shows that small hibernation sites may become more important in the future.

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