Skin temperature changes in wild chimpanzees upon hearing vocalizations of conspecifics

Guillaume Dezecache, Klaus Zuberbühler, Marina Davila-Ross, Christoph D. Dahl

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A growing trend of research using infrared thermography (IRT) has shown that changes in skin temperature, associated with activity of the autonomic nervous system, can be reliably detected in human and non-human animals. A contact-free method, IRT provides the opportunity to uncover emotional states in free-ranging animals during social interactions. Here, we measured nose and ear temperatures of wild chimpanzees of Budongo Forest, Uganda, when exposed to naturally occurring vocalizations of conspecifics. We found a significant temperature decrease over the nose after exposure to conspecifics’ vocalizations, whereas we found a corresponding increase for ear temperature. Our study suggests that IRT can be used in wild animals to quantify changes in emotional states in response to the diversity of vocalizations, their functional significance and acoustical characteristics. We hope that it will contribute to more research on physiological changes associated with social interactions in wild animals.

Original languageEnglish
Article number160816
JournalRoyal Society Open Science
Volume4
Issue number1
DOIs
Publication statusPublished - Jan 25 2017
Externally publishedYes

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Keywords

  • Emotions
  • Infrared thermography
  • Skin temperature
  • Vocalizations
  • Wild chimpanzees

ASJC Scopus subject areas

  • General

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