Simple ears - flexible behavior: Information processing in the moth auditory pathway

@article{Pfuhl2015SimpleE,
  title={Simple ears - flexible behavior: Information processing in the moth auditory pathway},
  author={Gerit Pfuhl and Blanka Kalinov{\'a} and Irena Valterov{\'a} and Bente G. Berg},
  journal={Current Zoology},
  year={2015},
  volume={61},
  pages={292-302}
}
Lepidoptera evolved tympanic ears in response to echolocating bats. Comparative studies have shown that moth ears evolved many times independently from chordotonal organs. With only 1 to 4 receptor cells, they are one of the simplest hearing organs. The small number of receptors does not imply simplicity, neither in behavior nor in the neural circuit. Behaviorally, the response to ultrasound is far from being a simple reflex. Moths' escape behavior is modulated by a variety of cues, especially… 

Figures from this paper

Evolution of directional hearing in moths via conversion of bat detection devices to asymmetric pressure gradient receivers

TLDR
Analyzing a species with male calling songs, it is reported a localization mechanism wherein the membrane structure of each ear affords sharp sensitivity to sound arriving from a distinct angle, confirming that an acoustic insect can localize a sound source based solely on the distinct features of each ears.

Search calls long duration puts the bat on the tympanate moth's radar. A new perspective on how Noctuoidea's auditory cells drive evasive manoeuvres

TLDR
In depth investigation of the potential bias in the auditory stimulation method suggests that the auditory transducer’s response may be constant for a larger frequency range than thought so far, and provide clues to explain the negative taxis in response to the searching bats’'s calls detection.

Detecting the danger : How do moths and butterflies manage to escape their predators ?

TLDR
The bat – moth model is a significant representative of coevolution and leads to a better understanding of prey – predator relationships and how organisms respond and adapt – behaviorally as well as morphologically – to their environment and increased predator pressure.

Discrepancies in the spiking threshold and frequency sensitivity of nocturnal moths explainable by biases in the canonical auditory stimulation method

TLDR
In-depth investigations of the potential bias in the auditory stimulation method suggest that the auditory transducer's response may be constant for a larger frequency range than thought so far, and provide clues to explain the negative taxis in response to the searching bats' calls detection.

Sexual communication in diurnal moths: behaviors and mechanisms

TLDR
Pheromone–binding proteins and histamine and visual genes play important roles during the signal conduction of sexual communication in diurnal moths, however, the regulatory mechanisms of acoustic communication in day–flying moths are unclear.

Prolonged Bat Call Exposure Induces a Broad Transcriptional Response in the Male Fall Armyworm (Spodoptera frugiperda; Lepidoptera: Noctuidae) Brain

TLDR
This study exposed adult male fall armyworm moths to recorded ultrasonic bat foraging and attack calls for a prolonged period and constructed a de novo transcriptome based on brain tissue from predator cue-exposed relative to control moths kept in silence, finding that 290 transcripts were highly up- or down-regulated among treatment tissues.

The Evolution of Mechanisms Underlying Behaviour

More than any other single work, Niko Tinbergen’s landmark paper “On aims and methods of ethology” (Tinbergen, 1963) shaped the scientific study of animal behaviour and continues to be a guiding

Ear-Bot: Locust Ear-on-a-Chip Bio-Hybrid Platform

TLDR
This study demonstrates a hybrid bio-technological approach, integrating a locust tympanic ear with a robotic platform, using an Ear-on-a-Chip method to create a long-lasting miniature sensory device that operates as part of a bio-hybrid robot.

Integrating Predation Risk Across Scales: From Neurons to Ecosystems and Milliseconds to Generations

References

SHOWING 1-10 OF 117 REFERENCES

Evolution and function of auditory systems in insects

TLDR
Altogether, the many improvements opportunistically evolved at any stage of acoustic information-processing ultimately allow insects to come up with astonishing acoustic performances similar to those achieved by vertebrates.

The structure and function of auditory chordotonal organs in insects

  • J. Yack
  • Biology
    Microscopy research and technique
  • 2004
TLDR
An integrated approach, using traditional anatomical and physiological techniques in combination with new methodologies in immunohistochemistry, genetics, and biophysics, will assist in refining hypotheses on how chordotonal organs function, and lead to new insights into the peripheral mechanisms underlying hearing in insects.

Structure, development, and evolution of insect auditory systems

  • D. D. Yager
  • Medicine
    Microscopy research and technique
  • 1999
TLDR
An overview of insect peripheral auditory systems focusing on tympanate ears (pressure detectors) and emphasizing research during the last 15 years is provided, suggesting that the many appearances of hearing could arise from changes in a small number of developmental modules.

Hearing in Notodontid Moths: a Tympanic Organ with a Single Auditory Neurone

TLDR
Notodontid moths seem to show the same 'bimodal' evasive behaviour as noctuids, and this behaviour can be explained on the basis of intensity parameters, since only low intensity stimuli will give the notodontids directional information.

Interneurons of the thoracic nerve cord activated by tympanic nerve fibres in noctuid moths.

Otoacoustic emissions from insect ears having just one auditory neuron

TLDR
High frequency distortion-product emissions are reported from the tympanal organ of a notodontid moth, Ptilodon cucullina, which contains only a single auditory receptor neuron and are vulnerable to topical application of ethyl ether.

Computational themes of peripheral processing in the auditory pathway of insects

TLDR
Evidence for canonical computations carried out in the peripheral auditory pathway is reviewed and it is shown that despite the vast diversity of insect hearing, signal processing is governed by common computational motifs and principles.

A multisensory centrifugal neuron in the olfactory pathway of heliothine moths

TLDR
A unique type of centrifugal neuron in the brain olfactory center of two heliothine moth species; one in Heliothis virescens and one in Helicoverpa armigera is characterized by intracellular recording and staining.
...