Sound imaging of nocturnal animal calls in their natural habitat

Takeshi Mizumoto, Ikkyu Aihara, Takuma Otsuka, Ryu Takeda, Kazuyuki Aihara, Hiroshi G. Okuno

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We present a novel method for imaging acoustic communication between nocturnal animals. Investigating the spatio-temporal calling behavior of nocturnal animals, e.g., frogs and crickets, has been difficult because of the need to distinguish many animals' calls in noisy environments without being able to see them. Our method visualizes the spatial and temporal dynamics using dozens of sound-to-light conversion devices (called "Firefly") and an off-the-shelf video camera. The Firefly, which consists of a microphone and a light emitting diode, emits light when it captures nearby sound. Deploying dozens of Fireflies in a target area, we record calls of multiple individuals through the video camera. We conduct two experiments, one indoors and the other in the field, using Japanese tree frogs (Hyla japonica). The indoor experiment demonstrates that our method correctly visualizes Japanese tree frogs' calling behavior. It has confirmed the known behavior; two frogs call synchronously or in anti-phase synchronization. The field experiment (in a rice paddy where Japanese tree frogs live) also visualizes the same calling behavior to confirm anti-phase synchronization in the field. Experimental results confirm that our method can visualize the calling behavior of nocturnal animals in their natural habitat.

Original languageEnglish
Pages (from-to)915-921
Number of pages7
JournalJournal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology
Volume197
Issue number9
DOIs
Publication statusPublished - 2011 Sep
Externally publishedYes

Fingerprint

calling behavior
Lampyridae
frog
Anura
Fireflies
Ecosystem
Hylidae
image analysis
nocturnal activity
video cameras
animal
habitat
habitats
Animal Behavior
frogs
animals
Light
Hyla
acoustic imagery
Gryllidae

Keywords

  • Acoustic communication
  • Measurement method
  • Nocturnal animal
  • Sound imaging
  • Visualization

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics
  • Physiology
  • Behavioral Neuroscience

Cite this

Sound imaging of nocturnal animal calls in their natural habitat. / Mizumoto, Takeshi; Aihara, Ikkyu; Otsuka, Takuma; Takeda, Ryu; Aihara, Kazuyuki; Okuno, Hiroshi G.

In: Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology, Vol. 197, No. 9, 09.2011, p. 915-921.

Research output: Contribution to journalArticle

Mizumoto, Takeshi ; Aihara, Ikkyu ; Otsuka, Takuma ; Takeda, Ryu ; Aihara, Kazuyuki ; Okuno, Hiroshi G. / Sound imaging of nocturnal animal calls in their natural habitat. In: Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology. 2011 ; Vol. 197, No. 9. pp. 915-921.
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