scholarly journals Another Record of Foliage Roosting in the Little Brown Bat, Myotis lucifugus, in Canada

2009 ◽  
Vol 123 (3) ◽  
pp. 265
Author(s):  
Howard M. Huynh
Keyword(s):  
Myotis Lucifugus ◽  
Atlantic Canada ◽  
Little Brown Bat ◽  
Little Brown Bats

Another record of foliage-roosting behaviour in little brown bats (Myotis lucifugus) is reported. This is only the second such observation ever recorded for this species and the first for Atlantic Canada.

Can echolocation calls provide information about group identity in the little brown bat (Myotis lucifugus)?

1996 ◽  
Vol 74 (12) ◽  
pp. 2184-2192 ◽  
Author(s):  
D. L. Pearl ◽  
M. B. Fenton
Keyword(s):  
New York ◽  
Group Identity ◽  
Myotis Lucifugus ◽  
Data Sets ◽  
Echolocation Calls ◽  
Adult Females ◽  
Structural Differences ◽  
Little Brown Bat ◽  
Site Recognition ◽  
Little Brown Bats

We studied the potential for colony-specific echolocation calls at maternity colonies of little brown bats, Myotis lucifugus, in Chautauqua County, New York. By analyzing echolocation calls recorded from free-flying bats returning to their roosts before dawn and those of known individuals in a captive setting, we tested for structural differences in the echolocation calls among maternity colonies. There were significant differences in the structure of the echolocation calls among the maternity colonies in both data sets, but the nature of these differences may depend on the setting in which the echolocation calls were produced. The echolocation calls of volant juveniles differed from those of adult females. Colony-specific echolocation calls could facilitate group and site recognition in microchiropteran bats.

scholarly journals First records of the Northern Myotis (Myotis septentrionalis) from Labrador and summer distribution records and biology of Little Brown Bats (Myotis lucifugus) in southern Labrador

2013 ◽  
Vol 127 (3) ◽  
pp. 266 ◽  
Author(s):  
Hugh G. Broders ◽  
Lynne E. Burns ◽  
Sara C. McCarthy
Keyword(s):  
Adult Female ◽  
Adult Male ◽  
Newfoundland And Labrador ◽  
Word Of Mouth ◽  
Myotis Lucifugus ◽  
Regional Survey ◽  
Myotis Septentrionalis ◽  
Little Brown Bat ◽  
Summer Distribution ◽  
Little Brown Bats

We conducted the first regional survey of bats in Labrador (Newfoundland and Labrador) to provide information on the distribution and biology of bats in this region. Our approach was to locate maternity roosts of Myotis lucifugus (Little Brown Bat) via word of mouth and then capture Little Brown Bats as they emerged from their day-roosts. We also surveyed for free-flying forest-dwelling bats using mist nets and a harp trap along forested trails and roads in southern Labrador. We captured 355 M. lucifugus at nine maternity roosts and one non-reproductive adult female M. lucifugus at a forested site. We captured two adult male Myotis septentrionalis (Northern Myotis) at two of the three forested sites (Gull Island and Grand Lake Road). These are the first confirmed records of this species from Labrador. Maternity roosts of M. lucifugus often had several hundred individuals. The proportion of female M. lucifugus captured at a roost that were either pregnant or lactating ranged from 35% to 96%; the estimated average date of parturition in 2012 was 10 July.

scholarly journals Going, going, gone: the impact of white-nose syndrome on the summer activity of the little brown bat ( Myotis lucifugus )

2010 ◽  
Vol 7 (3) ◽  
pp. 392-394 ◽  
Author(s):  
Yvonne Dzal ◽  
Liam P. McGuire ◽  
Nina Veselka ◽  
M. Brock Fenton
Keyword(s):  
Hudson River ◽  
Myotis Lucifugus ◽  
Activity Levels ◽  
Echolocation Calls ◽  
Bat Activity ◽  
White Nose Syndrome ◽  
Little Brown Bat ◽  
The Impact ◽  
Little Brown Bats

Since its discovery in the winter of 2005–2006, white-nose syndrome (WNS) has killed over one million little brown bats ( Myotis lucifugus ) in the American northeast. Although many studies have reported die-offs of bats at winter hibernacula, it is important to understand how bat mortality linked to WNS at winter hibernacula affects bat activity levels in their summer ranges. In the summer (May–August) of 2007, 2008 and 2009, we recorded echolocation calls to determine bat activity at sites along the Hudson River, NY (within approx. 100 km of where WNS was first reported). We documented a 78 per cent decline in the summer activity of M. lucifugus , coinciding with the arrival and spread of WNS. We suggest that mortality of M. lucifugus in winter hibernacula is reflected by reduced levels of activity in the summer and that WNS affects the entire bat population of an area, and not only individual hibernacula.

Elevated mercury exposure and neurochemical alterations in little brown bats (Myotis lucifugus) from a site with historical mercury contamination

Ecotoxicology ◽  
2012 ◽  
Vol 21 (4) ◽  
pp. 1094-1101 ◽  
Author(s):  
Dong-Ha Nam ◽  
David Yates ◽  
Pedro Ardapple ◽  
David C. Evers ◽  
John Schmerfeld ◽  
...  
Keyword(s):  
Mercury Exposure ◽  
Myotis Lucifugus ◽  
Mercury Contamination ◽  
A Site ◽  
Little Brown Bats

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.

scholarly journals Hepatic lipid signatures of little brown bats (Myotis lucifugus) and big brown bats (Eptesicus fuscus) at early stages of white-nose syndrome

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Evan L. Pannkuk ◽  
Nicole A. S.-Y. Dorville ◽  
Yvonne A. Dzal ◽  
Quinn E. Fletcher ◽  
Kaleigh J. O. Norquay ◽  
...  
Keyword(s):  
Lipid Metabolism ◽  
Fatty Acid Distribution ◽  
Eptesicus Fuscus ◽  
Myotis Lucifugus ◽  
Pseudogymnoascus Destructans ◽  
Hepatic Lipid ◽  
Early Stages ◽  
White Nose Syndrome ◽  
Big Brown Bats ◽  
Little Brown Bats

AbstractWhite-nose syndrome (WNS) is an emergent wildlife fungal disease of cave-dwelling, hibernating bats that has led to unprecedented mortalities throughout North America. A primary factor in WNS-associated bat mortality includes increased arousals from torpor and premature fat depletion during winter months. Details of species and sex-specific changes in lipid metabolism during WNS are poorly understood and may play an important role in the pathophysiology of the disease. Given the likely role of fat metabolism in WNS and the fact that the liver plays a crucial role in fatty acid distribution and lipid storage, we assessed hepatic lipid signatures of little brown bats (Myotis lucifugus) and big brown bats (Eptesicus fuscus) at an early stage of infection with the etiological agent, Pseudogymnoascus destructans (Pd). Differences in lipid profiles were detected at the species and sex level in the sham-inoculated treatment, most strikingly in higher hepatic triacylglyceride (TG) levels in E. fuscus females compared to males. Interestingly, several dominant TGs (storage lipids) decreased dramatically after Pd infection in both female M. lucifugus and E. fuscus. Increases in hepatic glycerophospholipid (structural lipid) levels were only observed in M. lucifugus, including two phosphatidylcholines (PC [32:1], PC [42:6]) and one phosphatidylglycerol (PG [34:1]). These results suggest that even at early stages of WNS, changes in hepatic lipid mobilization may occur and be species and sex specific. As pre-hibernation lipid reserves may aid in bat persistence and survival during WNS, these early perturbations to lipid metabolism could have important implications for management responses that aid in pre-hibernation fat storage.

Torpor patterns in food-deprived Myotis lucifugus (Chiroptera: Vespertilionidae) under simulated roost conditions

1991 ◽  
Vol 69 (1) ◽  
pp. 255-257 ◽  
Author(s):  
Allen Kurta
Keyword(s):  
Metabolic Rate ◽  
Myotis Lucifugus ◽  
Metabolic Rates ◽  
Laboratory Studies ◽  
Insectivorous Bats ◽  
Wet Weather ◽  
Single Night ◽  
Little Brown Bats

Temperate insectivorous bats are commonly prevented from foraging by cold or wet weather. This study examines the effect of missing a single night of foraging on the energetics of pregnant and lactating little brown bats (Myotis lucifugus) under simulated roost conditions. After not foraging, the day-roosting metabolic rate of pregnant M. lucifugus was reduced by 61% and that of lactating bats by 46%. Although previous laboratory studies predicted that food-deprived bats should remain in torpor throughout the day-roosting period, M. lucifugus consistently aroused from torpor between 11:00 and 15:00 and maintained elevated metabolic rates for the rest of the day.

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