Sound strategy: acoustic aposematism in the bat–tiger moth arms race

@article{Hristov2005SoundSA,
  title={Sound strategy: acoustic aposematism in the bat–tiger moth arms race},
  author={Nickolay I. Hristov and William E. Conner},
  journal={Naturwissenschaften},
  year={2005},
  volume={92},
  pages={164-169}
}
The night sky is the venue for an ancient arms race. Insectivorous bats with their ultrasonic sonar exert an enormous selective pressure on nocturnal insects. In response insects have evolved the ability to hear bat cries, to evade their hunting maneuvers, and some, the tiger moths (Arctiidae), to utter an ultrasonic reply. We here determine what it is that tiger moths “say” to bats. We chose four species of arctiid moths, Cycnia tenera, Euchaetes egle, Utetheisa ornatrix, and Apantesis nais… 
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References

SHOWING 1-10 OF 33 REFERENCES
Jamming bat echolocation: the dogbane tiger moth Cycnia tenera times its clicks to the terminal attack calls of the big brown bat Eptesicus fuscus.
TLDR
The 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, and support the hypothesis of a jamming effect.
Interactions between bats and arctiid moths
TLDR
Free-flying arctiid moths changed their flight paths less in response to trains of ultrasonic pulses than did moths of other families similarly capable of hearing these signals.
How Some Insects Detect and Avoid Being Eaten by Bats: Tactics and Countertactics of Prey and Predator
TLDR
The aim with this review is to present the complex interactions between echolocating bats and insects with bat-detecting ears and show how these interactions may be advantageous for predator or prey.
Arctiid moth clicks can degrade the accuracy of range difference discrimination in echolocating big brown bats, Eptesicus fuscus
  • L. Miller
  • Biology
    Journal of Comparative Physiology A
  • 2004
TLDR
Four big brown bats born and raised in captivity were trained using the Yes/No psychophysical method to report whether a virtual sonar target was at a standard distance or not, and clicks presented for the very first time could startle naive bats to different degrees depending on the individual.
Acoustic and behavioural analyses of the sounds produced by some species of Nearctic Arctiidae (Lepidoptera)
TLDR
The acoustic parameters of the arctiids surveyed revealed extremely high levels of variability in the sounds and these were predominantly ultrasonic and relatively faint compared with other insect sounds.
Echolocation behaviour of vespertilionid bats (Lasiurus cinereus and Lasiurus borealis) attacking airborne targets including arctiid moths
TLDR
There was, however, no threshold value unambiguously separating successful from unsuccessful attacks in either species and the responses of bats to tossed pebbles and to some insects indicated that during some feeding buzzes L. borealis and L. cinereus judged the nature and range of prey being attacked.
Arctiid moths and bat echolocation: broad-band clicks interfere with neural responses to auditory stimuli in the nuclei of the lateral lemniscus of the big brown bat
TLDR
Recorded responses of single units in the nuclei of the lateral lemniscus to combinations of a broad-band click and a test signal shows a close match between the single unit data and previous studies of range difference discrimination in the presence of clicks.
Echolocation by Insect-Eating Bats
TLDR
This article describes the echolocation behavior of insect-eating bats and shows how differing circumstances such as habitat type, foraging mode, and diet favor different signal types, and outlines the perceptual tasks that must be performed by foraging bats.
Effectiveness of tiger moth (Lepidoptera, Arctiidae) chemical defenses against an insectivorous bat (Eptesicus fuscus)
TLDR
It is argued that intense selective pressure provided by vertebrate predators including bats has driven the tiger moths to sequester more and more potent deterrents against them and to acquire a suite of morphology characteristics and behaviors that advertise their noxious taste.
A comparative study of ultrasound‐triggered behaviour in tiger beetles (Cicindelidae)
TLDR
Superimposing these data on a current phylogeny of the North American tiger beetles suggests that acoustic behaviour (and hearing) is a shared primitive trait among the taxa examined here and that there have been at least five independent losses of this character.
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