Auditory physiological properties of the units in the cerebellum of the FM bats, Eptesicus fuscus and Myotis lucifugus

1982 ◽  
Vol 72 (S1) ◽  
pp. S7-S7
Author(s):  
Philip H.‐S. Jen ◽  
Tsutomu Kamada ◽  
Xinde Sun
Keyword(s):  
Eptesicus Fuscus ◽  
Myotis Lucifugus ◽  
Physiological Properties

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.

Seasonal dynamics of the bat stomach worm, Longibucca lasiura (Nematoda: Rhabditoidea), in Alberta

1994 ◽  
Vol 72 (5) ◽  
pp. 791-794 ◽  
Author(s):  
Lena N. Measures
Keyword(s):  
Boreal Forest ◽  
Sample Size ◽  
Seasonal Dynamics ◽  
Eptesicus Fuscus ◽  
Myotis Lucifugus ◽  
Lasiurus Cinereus ◽  
Mean Intensity ◽  
Ecological Zones ◽  
Aspen Parkland ◽  
Lasionycteris Noctivagans

One hundred and sixty-nine bats belonging to 6 different species and collected from 4 ecological zones (aspen parkland, boreal forest, grassland, and montane) in Alberta, Canada, during 1988 and 1989 were examined for helminths. Forty bats were infected with the stomach nematode Longibucca lasiura McIntosh and Chitwood, 1934. Sample size, prevalence, and mean intensity (with range in parentheses) of L. lasiura for the 6 species of bat were as follows: Myotis lucifugus, N = 130, 27%, 39 (1–121); Myotis ciliolabrum, N = 10, 10%, 1; Eptesicus fuscus, N = 6, 33%, 12 (2–22); Lasionycteris noctivagans, N = 2, 100%, 22 (5–39). Myotis evotis (N = 9) and Lasiurus cinereus (N = 3) were not infected. Longibucca lasiura was found in bats from all ecological zones except the boreal forest. This parasite was found in bats active during summer (June to August) and in hibernating M. lucifugus collected in September and April.

Organization of Forelimb Motoneuron Pools in Two Bat Species (Eptesicus fuscus and Myotis lucifugus)

1997 ◽  
Vol 158 (2) ◽  
pp. 121-129 ◽  
Author(s):  
J.M. Ryan ◽  
J. Cushman ◽  
C. Baier
Keyword(s):  
Eptesicus Fuscus ◽  
Myotis Lucifugus

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.

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