... serve multiple functions, an important one is to restore water stores depleted during torpor. Many hibernating bat species require high humidity, presumably to reduce torpid water loss, but big brown bats ( Eptesicus fuscus ) appear tolerant of a wide humidity range. We tested the hypothesis...

... duty cycle of tiger moth signals for sonar jamming. Is there a threshold that allows us to classify moths as acoustically aposematic versus sonar jammers based on their duty cycles? We performed playback experiments with three wild-caught adult male bats, Eptesicus fuscus . Bat attacks on tethered...

... relative positions: data show that the bat's flight guidance is driven by the timing between echoes within cascades. Echolocation Acoustic flow Eptesicus fuscus Auditory-evoked activity Inferior colliculus Navigation and orientation in the environment are fundamental to all organisms...

.../ Summary: Echolocating bats increase production of temporally clustered sonar calls when tracking targets with unpredictable trajectories, providing evidence that bats control sonar signal timing for increased spatiotemporal resolution and sensorimotor planning. Eptesicus fuscus Sonar sound...

... as whether such interference elicits a jamming avoidance response. We compare the capture rates of tethered moths and the echolocation parameters of big brown bats ( Eptesicus fuscus ) challenged with the playback of the jamming signal normally produced by Brazilian free-tailed bats and playback...

...Sonja Sändig; Hans-Ulrich Schnitzler; Annette Denzinger Four big brown bats ( Eptesicus fuscus ) were challenged in an obstacle avoidance experiment to localize vertically stretched wires requiring progressively greater accuracy by diminishing the wire-to-wire distance from 50 to 10 cm...

... availability was mediating this relationship, we limited fatty acid availability with mercaptoacetate (MA) and quantified its effect on torpid metabolic rate( TMR ) and thermal preference of big brown bats ( Eptesicus fuscus ). Administration of MA caused a 43% drop in TMR at 10°C and caused bats to choose...

...Marianne Egebjerg Jensen; Cynthia F. Moss; Annemarie Surlykke SUMMARY We investigated the echolocating bat's use of an acoustic landmark for orientation in a complex environment with no visual information. Three bats of the species Eptesicus fuscus were trained to fly through a hole in a mist net...

.... We exposed the ears of five noctuoid moth species to the pre-recorded echolocation calls of an attacking bat ( Eptesicus fuscus ) to observe the acoustic encoding of the receptors at this critical time in their defensive behaviour. The B cell is a non-tympanal receptor common to all moths that has...

... of the echolocation sequence emitted by a big brown bat ( Eptesicus fuscus ) as it attacked a stationary target. Our results demonstrate that, at normal echolocation intensities, C. tenera does not respond to approach calls but waits until the terminal phase of the attack before emitting its clicks. This timing...

...Joseph M. Szewczak; Donald C. Jackson ABSTRACT Like many mammalian heterotherms, the big brown bat, Eptesicus fuscus , breathes intermittently during torpor. By exploiting this bat’s preference to roost in crevices, we could separately measure O2 uptake during ventilatory bouts and apneic periods...