How do bats choose optimal temperatures for hibernation?

Bat habitat requirements – implications for land use planning

“…Masing (1982) reports that among three Myotis species, pond bats (mean = 5.5 o C) hibernated in the warmest locations, Daubenton's bats (mean = 5.4 o C) in more moderate conditions, and Brandt's/whiskered bats (mean = 5.1 o C) in the coldest locations in Estonia. Among Natterer's bats, Brandt's bats/whiskered bats, and brown long-eared bats in Germany, brown long-eared bats (mean = 4.0 o C) hibernated in the coldest conditions, Brandt's bats/whiskered bats (mean = 4.6 o C) in more moderate conditions, and Natterer's bats (mean = 4.9 o C) in the warmest conditions (Nagel and Nagel 1991), unlike in our study. Bogdanowicz (1983) studied the temperatures at which brown long-eared bats, Daubenton's bats, and Natterer's bats hibernated, as well as their use of crevices in Poland.…”

Bat habitat requirements – implications for land use planning

“…Masing (1982) reports that among three Myotis species, pond bats (mean = 5.5 o C) hibernated in the warmest locations, Daubenton's bats (mean = 5.4 o C) in more moderate conditions, and Brandt's/whiskered bats (mean = 5.1 o C) in the coldest locations in Estonia. Among Natterer's bats, Brandt's bats/whiskered bats, and brown long-eared bats in Germany, brown long-eared bats (mean = 4.0 o C) hibernated in the coldest conditions, Brandt's bats/whiskered bats (mean = 4.6 o C) in more moderate conditions, and Natterer's bats (mean = 4.9 o C) in the warmest conditions (Nagel and Nagel 1991), unlike in our study. Bogdanowicz (1983) studied the temperatures at which brown long-eared bats, Daubenton's bats, and Natterer's bats hibernated, as well as their use of crevices in Poland.…”

Physiological Traits Affecting the Distribution and Wintering Strategy of the Bat Tadarida teniotis

“…6). The lowest ambient temperature tolerated by T. teniotis appears markedly higher than the minimum ambient temperatures recorded in 34 out of 37 species of hibernating vespertilionid and rhinolophid bats listed by Nagel and Nagel (1991) and Webb et al (1996), the three noticeable exceptions being species occurring in Mediterranean environments. Kulzer (1965) observed a lethargic state in T. teniotis exposed to T a down to ϳ10ЊC, but T b apparently did not drop below 16ЊC.…”

Thermoregulatory Behavior of Tree-Roosting Chocolate Wattled Bats (Chalinolobus Morio) During Summer and Winter

“…Examination of my preliminary data for a tree-roosting bat suggests that the thermal tolerance of hibernating bats is greater than has been previously appreciated. In tree roosts, daily fluctuations in T skin of C. morio during prolonged torpor bouts typically exceeded the range of T a experienced by cave-roosting bats throughout the entire hibernation season (Hall 1982;Nagel and Nagel 1991;Ransome 1968;Webb et al 1995). Passive daily fluctuations in T skin were of greater amplitude and reached a higher maximum relative to T a in the male bat during winter.…”

Bat habitat requirements – implications for land use planning

“…Masing (1982) reports that among three Myotis species, pond bats (mean = 5.5 o C) hibernated in the warmest locations, Daubenton's bats (mean = 5.4 o C) in more moderate conditions, and Brandt's/whiskered bats (mean = 5.1 o C) in the coldest locations in Estonia. Among Natterer's bats, Brandt's bats/whiskered bats, and brown long-eared bats in Germany, brown long-eared bats (mean = 4.0 o C) hibernated in the coldest conditions, Brandt's bats/whiskered bats (mean = 4.6 o C) in more moderate conditions, and Natterer's bats (mean = 4.9 o C) in the warmest conditions (Nagel and Nagel 1991), unlike in our study. Bogdanowicz (1983) studied the temperatures at which brown long-eared bats, Daubenton's bats, and Natterer's bats hibernated, as well as their use of crevices in Poland.…”

Physiological Traits Affecting the Distribution and Wintering Strategy of the Bat Tadarida teniotis

“…6). The lowest ambient temperature tolerated by T. teniotis appears markedly higher than the minimum ambient temperatures recorded in 34 out of 37 species of hibernating vespertilionid and rhinolophid bats listed by Nagel and Nagel (1991) and Webb et al (1996), the three noticeable exceptions being species occurring in Mediterranean environments. Kulzer (1965) observed a lethargic state in T. teniotis exposed to T a down to ϳ10ЊC, but T b apparently did not drop below 16ЊC.…”

Thermoregulatory Behavior of Tree-Roosting Chocolate Wattled Bats (Chalinolobus Morio) During Summer and Winter

“…Examination of my preliminary data for a tree-roosting bat suggests that the thermal tolerance of hibernating bats is greater than has been previously appreciated. In tree roosts, daily fluctuations in T skin of C. morio during prolonged torpor bouts typically exceeded the range of T a experienced by cave-roosting bats throughout the entire hibernation season (Hall 1982;Nagel and Nagel 1991;Ransome 1968;Webb et al 1995). Passive daily fluctuations in T skin were of greater amplitude and reached a higher maximum relative to T a in the male bat during winter.…”

Bat habitat requirements – implications for land use planning

“…Masing (1982) reports that among three Myotis species, pond bats (mean = 5.5 o C) hibernated in the warmest locations, Daubenton's bats (mean = 5.4 o C) in more moderate conditions, and Brandt's/whiskered bats (mean = 5.1 o C) in the coldest locations in Estonia. Among Natterer's bats, Brandt's bats/whiskered bats, and brown long-eared bats in Germany, brown long-eared bats (mean = 4.0 o C) hibernated in the coldest conditions, Brandt's bats/whiskered bats (mean = 4.6 o C) in more moderate conditions, and Natterer's bats (mean = 4.9 o C) in the warmest conditions (Nagel and Nagel 1991), unlike in our study. Bogdanowicz (1983) studied the temperatures at which brown long-eared bats, Daubenton's bats, and Natterer's bats hibernated, as well as their use of crevices in Poland.…”

Physiological Traits Affecting the Distribution and Wintering Strategy of the Bat Tadarida teniotis

“…6). The lowest ambient temperature tolerated by T. teniotis appears markedly higher than the minimum ambient temperatures recorded in 34 out of 37 species of hibernating vespertilionid and rhinolophid bats listed by Nagel and Nagel (1991) and Webb et al (1996), the three noticeable exceptions being species occurring in Mediterranean environments. Kulzer (1965) observed a lethargic state in T. teniotis exposed to T a down to ϳ10ЊC, but T b apparently did not drop below 16ЊC.…”

Thermoregulatory Behavior of Tree-Roosting Chocolate Wattled Bats (Chalinolobus Morio) During Summer and Winter

“…Examination of my preliminary data for a tree-roosting bat suggests that the thermal tolerance of hibernating bats is greater than has been previously appreciated. In tree roosts, daily fluctuations in T skin of C. morio during prolonged torpor bouts typically exceeded the range of T a experienced by cave-roosting bats throughout the entire hibernation season (Hall 1982;Nagel and Nagel 1991;Ransome 1968;Webb et al 1995). Passive daily fluctuations in T skin were of greater amplitude and reached a higher maximum relative to T a in the male bat during winter.…”