Acoustic Monitoring Provides First Records of Hoary Bats (Lasiurus cinereus) and Delineates the Distribution of Silver-Haired Bats (Lasionycteris noctivagans) in Southeast Alaska

2014 ◽  
Vol 95 (3) ◽  
pp. 236-250 ◽  
Author(s):  
Karen M Blejwas ◽  
Cori L Lausen ◽  
Dylan Rhea-Fournier
Keyword(s):  
Acoustic Monitoring ◽  
Southeast Alaska ◽  
Lasiurus Cinereus ◽  
Lasionycteris Noctivagans ◽  
Hoary Bats

scholarly journals Are migratory behaviours of bats socially transmitted?

2016 ◽  
Vol 3 (4) ◽  
pp. 150658 ◽  
Author(s):  
E. F. Baerwald ◽  
R. M. R. Barclay
Keyword(s):  
Stable Isotope ◽  
Parental Care ◽  
Social Transmission ◽  
Migration Routes ◽  
Lasiurus Cinereus ◽  
Transmitted Information ◽  
Lasionycteris Noctivagans ◽  
Extended Parental Care ◽  
Experienced Individual ◽  
Hoary Bats

To migrate, animals rely on endogenous, genetically inherited programmes, or socially transmitted information about routes and behaviours, or a combination of the two. In long-lived animals with extended parental care, as in bats, migration tends to be socially transmitted rather than endogenous. For a young bat to learn migration via social transmission, they would need to follow an experienced individual, most likely one roosting nearby. Therefore, we predicted that bats travelling together originate from the same place. It is also likely that young bats would follow their mothers or other kin, so we predicted that bats travelling together are more closely related to each other than bats not travelling together. To test our predictions, we used microsatellite genotypes and stable isotope values of δ 13 C, δ 15 N and δ 2 H to analyse the relatedness and geographical origins of migrating hoary bats ( Lasiurus cinereus/Aeorestes cinereus (Baird et al. 2015 J. Mammal . 96, 1255–1274 ( doi:10.1093/jmammal/gyv135 )); n  = 133) and silver-haired bats ( Lasionycteris noctivagans ; n  = 87) killed at wind turbines over two consecutive autumn migrations. Contrary to our predictions, there was no evidence that related dyads of hoary bats or silver-haired bats were killed on the same night more frequently than expected by chance, or that the number of days between the fatalities of dyad members was influenced by relatedness or latitude of origin. Our data suggest that these bats do not socially transmit migration routes and behaviours among close kin.

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.

Long- versus short-range foraging strategies of hoary (Lasiurus cinereus) and silver-haired (Lasionycteris noctivagans) bats and the consequences for prey selection

1985 ◽  
Vol 63 (11) ◽  
pp. 2507-2515 ◽  
Author(s):  
Robert M. R. Barclay
Keyword(s):  
Short Range ◽  
Prey Availability ◽  
Prey Selection ◽  
Foraging Strategy ◽  
Foraging Strategies ◽  
Lasiurus Cinereus ◽  
Echolocation Calls ◽  
Straight Line ◽  
Lasionycteris Noctivagans ◽  
Selection Of

Habitat use, temporal activity, foraging behaviour, and prey selection of hoary bats (Lasiurus cinereus) and silver-haired bats (Lasionycteris noctivagans) were studied at Delta Marsh, Manitoba. Bat activity was assessed by monitoring echolocation calls with ultrasonic detectors. Prey availability was determined using sticky and Malaise traps and dietary information was obtained from fecal analysis. Both species were active all night and foraged primarily in the lee of a narrow forested ridge. Lasionycteris noctivagans foraged in a manner that indicates that it detects and pursues prey over short distances. These bats fly slowly, are highly manoeuverable, and were commonly observed feeding on swarms of insects in small clearings. They use echolocation calls that support the notion of a short-range foraging strategy and feed opportunistically on whatever insects are available. Lasiurus cinereus, on the other hand, uses a long-range prey detection and pursuit foraging strategy. They fly rapidly along straight line paths in open areas and use echolocation calls designed to detect insects at a distance. The diet consists primarily of large insects (moths, beetles, and dragonflies), but the bats nonetheless feed opportunistically. The foraging strategy likely restricts the availability and profitability of small insects as prey.

scholarly journals LASIURINE BATS IN NOVA SCOTIA

2011 ◽  
Vol 46 (2) ◽  
Author(s):  
Zoe Lucas ◽  
Andrew Hebda
Keyword(s):  
Nova Scotia ◽  
Autumn Migration ◽  
Migration Period ◽  
Lasiurus Borealis ◽  
Lasiurus Cinereus ◽  
Hoary Bat ◽  
Lasionycteris Noctivagans

Three lasiurine bat species, Lasionycteris noctivagans (Silver-hairedBat), Lasiurus cinereus (Hoary Bat), and Lasiurus borealis (Red Bat),have been recorded in inland, coastal, and offshore locations as of NovaScotia. Although these records occurred over a century, 70% are from themid-1990s or later, largely because of research in mainland Nova Scotia,and increased interest on Sable Island. The 65 records presented hereinclude 11, 25, and 29 for Silver-haired, Hoary, and Red bats, respectively,of which 31 are previously unpublished. Seventy-seven percent of recordsare from August through November, the autumn migration period forlasiurine bats. These observations suggest that most autumn occurrencesof these species in Nova Scotia are not extralimital, but are part of normalmigratory patterns in the province.

Acoustic Evidence of Hoary Bats (Lasiurus Cinereus) on Newfoundland, Canada

2020 ◽  
Vol 27 (3) ◽  
pp. 567
Author(s):  
Darrian P. Washinger ◽  
Raymond Reid ◽  
Erin E. Fraser
Keyword(s):  
Lasiurus Cinereus ◽  
Hoary Bats

Flight muscle carnitine palmitoyl transferase activity varies with substrate chain length and unsaturation in the hoary bat (Lasiurus cinereus)

2014 ◽  
Vol 92 (2) ◽  
pp. 173-176 ◽  
Author(s):  
E.R. Price ◽  
L.P. McGuire ◽  
M.B. Fenton ◽  
C.G. Guglielmo
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Substrate Preference ◽  
Acid Oxidation ◽  
Transferase Activity ◽  
Carnitine Palmitoyl Transferase ◽  
Lasiurus Cinereus ◽  
Hoary Bats

Fat is an important fuel for bats to support high metabolic rates in extended periods of flight. The fatty acid composition of adipose stores could affect whole animal exercise performance, as fatty acids vary in rates of mobilization and oxidation. A key step in the fatty acid oxidation pathway is transporting fatty acids from the cytosol into mitochondria, mediated by the enzyme carnitine palmitoyl transferase (CPT). Therefore, understanding the substrate preference patterns of CPT in bats is important for interpreting the consequences of adipose fatty acid profiles. We measured CPT activity with eight different fatty acyl CoA substrates (16:0, 16:1ω7, 18:0, 18:1ω9, 18:2ω6, 18:3ω3, 20:4ω6, and 22:6ω3) in the pectoralis muscle of migrating and nonmigrating hoary bats (Lasiurus cinereus (Beauvois, 1796)). The pattern of substrate preference was similar to the patterns previously reported for birds and rats and was not affected by migration. Generally, activity increased with the number of double bonds and was higher with 16 carbon fatty acids compared with 18 carbon fatty acids. Given the observed substrate variation in CPT activity, there is no evidence to suggest that recently reported seasonal changes in the adipose fatty acid composition of migrating hoary bats would lead to increased lipid oxidation rate, and may instead be a consequence of seasonal shifts in diet.

scholarly journals Inconspicuous echolocation in hoary bats ( Lasiurus cinereus )

2018 ◽  
Vol 285 (1878) ◽  
pp. 20180441 ◽  
Author(s):  
Aaron J. Corcoran ◽  
Theodore J. Weller
Keyword(s):  
Model Organisms ◽  
Mating Season ◽  
Sensory Stimuli ◽  
Sound Energy ◽  
Lasiurus Cinereus ◽  
Echolocation Calls ◽  
Call Type ◽  
Acoustic Modelling ◽  
Infrared Cameras ◽  
Hoary Bats

Echolocation allows bats to occupy diverse nocturnal niches. Bats almost always use echolocation, even when other sensory stimuli are available to guide navigation. Here, using arrays of calibrated infrared cameras and ultrasonic microphones, we demonstrate that hoary bats ( Lasiurus cinereus ) use previously unknown echolocation behaviours that challenge our current understanding of echolocation. We describe a novel call type (‘micro’ calls) that has three orders of magnitude less sound energy than other bat calls used in open habitats. We also document bats flying close to microphones (less than 3 m) without producing detectable echolocation calls. Acoustic modelling indicates that bats are not producing calls that exceed 70–75 dB at 0.1 m, a level that would have little or no known use for a bat flying in the open at speeds exceeding 7 m s −1 . This indicates that hoary bats sometimes fly without echolocation. We speculate that bats reduce echolocation output to avoid eavesdropping by conspecifics during the mating season. These findings might partly explain why tens of thousands of hoary bats are killed by wind turbines each year. They also challenge the long-standing assumption that bats—model organisms for sensory specialization—are reliant on sonar for nocturnal navigation.

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