The duration of the period of hibernation of three species of vespertilionid bats. I. Field studies

1985 ◽  
Vol 63 (12) ◽  
pp. 2952-2954 ◽  
Author(s):  
Virgil Brack Jr. ◽  
John W. Twente
Keyword(s):  
Field Studies ◽  
Myotis Lucifugus ◽  
Insufficient Data ◽  
Temperature Dependent ◽  
Natural Conditions ◽  
Big Brown Bat ◽  
Little Brown Bat ◽  
Eastern Pipistrelle ◽  
Pipistrellus Subflavus ◽  
Vespertilionid Bats

The durations of the periods of hibernation of the big brown bat (Eptesicus fuscus), little brown bat (Myotis lucifugus), and eastern pipistrelle (Pipistrellus subflavus) under natural conditions were determined by following intracave movements through two winter seasons in two Missouri caves. Average durations of periods of hibernation were similar for all three species (10–20 days) over a range of temperatures. Maximum durations of periods of hibernation determined were as follows: E. fuscus, 72 days; P. subflavus, 111 days (?); M. lucifugus, 83 days. Variability in the durations of the period of hibernation was much greater for P. subflavus and may be attributable to a lack of movement after arousal or the inability of the observer to discern movement between periods of hibernation. The frequency of arousal was determined to be statistically temperature dependent for M. lucifugus, but not for E. fuscus or P. subflavus, probably because of insufficient data.

The duration of the period of hibernation of three species of vespertilionid bats. II. Laboratory studies

1985 ◽  
Vol 63 (12) ◽  
pp. 2955-2961 ◽  
Author(s):  
John W. Twente ◽  
Janet Twente ◽  
Virgil Brack Jr.
Keyword(s):  
Eptesicus Fuscus ◽  
Ground Squirrels ◽  
Myotis Lucifugus ◽  
Effect Of Temperature ◽  
Temperature Dependency ◽  
Laboratory Studies ◽  
Big Brown Bat ◽  
Little Brown Bat ◽  
Eastern Pipistrelle ◽  
Vespertilionid Bats

Variation in the duration of the period of hibernation of three species of vespertilionid bats under laboratory conditions was great. Durations of the period of hibernation of the big brown bat (Eptesicus fuscus) ranged from less than a day to 908 h (37.8 days) at 5 °C and to 1227 h (51.1 days) at 2 °C. Those for the little brown bat (Myotis lucifugus) ranged from less than a day to 1398 h (58.2 days) at 5 °C and to 1827 h (76.1 days) at 2 °C. Those for Pipistrellus subjlavus (eastern pipistrelle) ranged from less than a day to 649 h (27.0 days) at 5 °C and to 864 h (36.0 days) at 2 °C. It is proposed that the tendency toward great variation is an inherent characteristic of the bats and is not a laboratory-induced artifact. Despite great variation, a temperature dependency of the frequency of arousal was demonstrated for E. fuscus, P. subjlavus, and M. lucifugus. Slopes of regression for E. fuscus, P. subflavus, and M. lucifugus derived from semilogarithmic plots of durations of the period of hibernation versus temperature are similar to each other and to those of hibernating ground squirrels. The regulating effect of temperature upon hibernation suggests that the frequency of arousal is controlled metabolically.

Day-roosting activity budgets of the eastern pipistrelle bat, Pipistrellus subflavus (Chiroptera: Vespertilionidae)

1996 ◽  
Vol 74 (3) ◽  
pp. 431-441 ◽  
Author(s):  
Jane M. Winchell ◽  
Thomas H. Kunz
Keyword(s):  
Post Partum ◽  
Video Camera ◽  
Time Of Day ◽  
Myotis Lucifugus ◽  
Seasonal Activity ◽  
Activity Budgets ◽  
Little Brown Bat ◽  
Eastern Pipistrelle ◽  
Pipistrellus Subflavus ◽  
Temperature Time

Daily and seasonal activity budgets of adult female eastern pipistrelle bats, Pipistrellus subflavus, were quantified at a maternity colony in eastern Massachusetts. Ambient and roost temperatures were recorded. Activities of roosting bats were monitored using an infrared-sensitive video camera. Scan sampling was used to analyze video records taken at weekly intervals from mid-May to late July 1989. Analysis of day-roosting indicates that adult females spend an average of 77% of their time at rest, 16% alert, 7% grooming, and < 1% crawling. Bats were most active immediately following their morning return to the day-roost and just prior to their departure at dusk. Periodic bouts of activity throughout the day were usually associated with urination and (or) defecation, mother–pup interactions, and movements in response to changes in roost temperature. Females were significantly more active in mortise roosts than when roosting on the open ridgepole, probably because fluctuations in temperature in mortises were smaller. As the season progressed, the overall time that bats spent resting decreased from 86 to 70%, whereas time spent alert increased from 9 to 24%; weekly fluctuations in the incidence of grooming and crawling showed no consistent seasonal trends. Roost temperature, time of day, and date explained significant amounts of variation in both daily and seasonal activity budgets. Females rested significantly less and were more alert after young were born than before, although time spent grooming and crawling did not differ significantly between the pre- and post-partum periods. Our findings for P. subflavus generally corroborate activity budgets previously reported for the little brown bat (Myotis lucifugus).

Temperature-dependent consumption of spiders by little brown bats (Myotis lucifugus), but not northern long-eared bats (Myotis septentrionalis), in northern Canada

2018 ◽  
Vol 96 (3) ◽  
pp. 261-268 ◽  
Author(s):  
L.A. Kaupas ◽  
R.M.R. Barclay
Keyword(s):  
Low Temperatures ◽  
Resource Competition ◽  
Myotis Lucifugus ◽  
Dietary Composition ◽  
High Latitudes ◽  
Wing Morphology ◽  
Temperature Dependent ◽  
Myotis Septentrionalis ◽  
Northern Regions ◽  
Little Brown Bat

Intraspecific variation in diet has been observed in many species, including the geographically widespread little brown bat (Myotis lucifugus (Le Conte, 1831)). Spider consumption by M. lucifugus is more common in northern regions of their distribution, possibly due to reduced availability of aerial prey during low temperatures. However, in previously studied northern regions, M. lucifugus was the only bat species captured. The purpose of our study was to examine whether there is overlap in the diet and morphology of M. lucifugus and the northern long-eared bat (Myotis septentrionalis (Trouessart, 1897)), a species that commonly gleans prey, in the Northwest Territories, Canada. There were significant differences in the dietary composition and wing morphology of the two species, suggesting partitioning of resources. Both species consumed spiders, although unlike M. septentrionalis, the probability of M. lucifugus consuming spiders was significantly greater at low temperatures. Myotis lucifugus demonstrated a different pattern of spider consumption than in other northern regions where it consumes spiders throughout the summer, suggesting the possibility of resource competition where M. lucifugus overlaps with M. septentrionalis. Further research is needed to determine whether arthropods are seasonally limiting at high latitudes and to examine how these species capture nonaerial prey, including spiders.

Host behaviour, age and sex correlate with ectoparasite prevalence and intensity in a colonial mammal, the little brown bat

Behaviour ◽  
2014 ◽  
Vol 152 (1) ◽  
pp. 83-105 ◽  
Author(s):  
Quinn M.R. Webber ◽  
Liam P. McGuire ◽  
Steven B. Smith ◽  
Craig K.R. Willis
Keyword(s):  
Pathogen Transmission ◽  
Myotis Lucifugus ◽  
Physical Contact ◽  
Wildlife Diseases ◽  
Colonial Species ◽  
Host Seeking ◽  
Host Sex ◽  
Little Brown Bat ◽  
Host Behaviour ◽  
Age And Sex

The influence of behaviour on host-parasite dynamics has theoretical support but few empirical studies have examined this influence for wild-captured hosts, especially in colonial species, which are thought to face generally high risk of exposure. Behavioural tendencies of hosts in novel environments could mediate host exposure. We tested the hypothesis that behavioural tendencies of hosts, and host sex and age, correlate with prevalence and intensity of ectoparasites in a gregarious mammal, the little brown bat (Myotis lucifugus). We also tested whether relationships between host behaviour and parasite prevalence and intensity would vary between taxa of ectoparasites which differ in host-seeking behaviour. We predicted that individual hosts displaying active and explorative behaviours would have higher prevalence and intensity of parasites that depend on physical contact among hosts for transmission (mites) but that host behaviour would not influence prevalence and intensity of mobile ectoparasites with active host-seeking behaviour (fleas). We recorded behavioural responses of wild-captured bats in a novel-environment test and then sampled each individual for ectoparasites. After accounting for age and sex we found mixed support for our hypotheses in some but not all demographics. More active adult and young of the year (YOY) males were more likely to host mites while more active adult and YOY females were less likely to host fleas. Our results highlight possible differences in the influence of host and parasite behaviour on parasite transmission dynamics for colonial compared to non-colonial species and have conservation implications for understanding pathogen transmission in bat white-nose syndrome and other wildlife diseases.

Field identification of the cryptic vespertilionid bats, Myotis lucifugus and M. yumanensis

2007 ◽  
Vol 9 (1) ◽  
pp. 133-147 ◽  
Author(s):  
Theodore J. Weller ◽  
Shonene A. Scott ◽  
Thomas J. Rodhouse ◽  
Patricia C. Ormsbee ◽  
Jan M. Zinck
Keyword(s):  
Myotis Lucifugus ◽  
Field Identification ◽  
Vespertilionid Bats

Bat activity over calm and turbulent water

1987 ◽  
Vol 65 (2) ◽  
pp. 219-222 ◽  
Author(s):  
Beatrix von Frenckell ◽  
Robert M. R. Barclay
Keyword(s):  
Water Level ◽  
Frequency Analysis ◽  
Myotis Lucifugus ◽  
Prey Abundance ◽  
Sticky Traps ◽  
Insect Abundance ◽  
Echolocation Calls ◽  
Bat Activity ◽  
Little Brown Bat ◽  
Turbulent Water

A comparison of the activity of the little brown bat (Myotis lucifugus) over calm pools and fast-flowing riffles was performed in southwestern Alberta. Bat activity was assessed by monitoring echolocation calls using ultrasonic detectors. Activity was higher over pools than riffles. This could be due to differences in prey abundance or accessibility in the two habitats. Alternatively, water noise at turbulent sites may interfere with the bats' echolocation abilities. Sticky traps were used to assess prey abundance, and water noise was recorded for intensity–frequency analysis. Insect abundance at the height where the bats flew (< 1 m above the water) did not differ between sites, but insects close to or at water level at calm pools may be more accessible than at fast-flowing riffles. Further, water noise at riffles may decrease the efficiency with which bats detect targets.

Effects of Familiar Area on the Homing Ability of the Little Brown Bat, Myotis lucifugus

1979 ◽  
Vol 60 (1) ◽  
pp. 201-204
Author(s):  
J. W. Leffler ◽  
L. T. Leffler ◽  
J. S. Hall
Keyword(s):  
Myotis Lucifugus ◽  
Little Brown Bat

Handling and blood collection in the little brown bat (Myotis lucifugus)

Lab Animal ◽  
2014 ◽  
Vol 43 (6) ◽  
pp. 197-199 ◽  
Author(s):  
Sarah E. Hooper ◽  
Sybill K. Amelon
Keyword(s):  
Myotis Lucifugus ◽  
Blood Collection ◽  
Little Brown Bat
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