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Thermal imaging reveals social monitoring during social feeding in wild chimpanzees

Understanding the affective lives of animals has been a long-standing challenge in science. Recent technological progress in infrared thermal imaging has enabled researchers to monitor animals' physiological states in real-time when exposed to ecologically relevant situations, such as feeding i...

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Autores principales: Barrault, Claire, Soldati, Adrian, Hobaiter, Catherine, Mugisha, Stephen, De Moor, Delphine, Zuberbühler, Klaus, Dezecache, Guillaume
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9358323/
https://www.ncbi.nlm.nih.gov/pubmed/35934961
http://dx.doi.org/10.1098/rstb.2021.0302
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author Barrault, Claire
Soldati, Adrian
Hobaiter, Catherine
Mugisha, Stephen
De Moor, Delphine
Zuberbühler, Klaus
Dezecache, Guillaume
author_facet Barrault, Claire
Soldati, Adrian
Hobaiter, Catherine
Mugisha, Stephen
De Moor, Delphine
Zuberbühler, Klaus
Dezecache, Guillaume
author_sort Barrault, Claire
collection PubMed
description Understanding the affective lives of animals has been a long-standing challenge in science. Recent technological progress in infrared thermal imaging has enabled researchers to monitor animals' physiological states in real-time when exposed to ecologically relevant situations, such as feeding in the company of others. During social feeding, an individual's physiological states are likely to vary with the nature of the resource and perceptions of competition. Previous findings in chimpanzees have indicated that events perceived as competitive cause decreases in nasal temperatures, whereas the opposite was observed for cooperative interactions. Here, we tested how food resources and audience structure impacted on how social feeding events were perceived by wild chimpanzees. Overall, we found that nasal temperatures were lower when meat was consumed as compared to figs, consistent with the idea that social feeding on more contested resources is perceived as more dangerous and stressful. Nasal temperatures were significant affected by interactions between food type and audience composition, in particular the number of males, their dominance status, and their social bond status relative to the subject, while no effects for the presence of females were observed. Our findings suggest that male chimpanzees closely monitor and assess their social environment during competitive situations, and that infrared imaging provides an important complement to access psychological processes beyond observable social behaviours. This article is part of the theme issue ‘Cognition, communication and social bonds in primates’.
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spelling pubmed-93583232022-08-09 Thermal imaging reveals social monitoring during social feeding in wild chimpanzees Barrault, Claire Soldati, Adrian Hobaiter, Catherine Mugisha, Stephen De Moor, Delphine Zuberbühler, Klaus Dezecache, Guillaume Philos Trans R Soc Lond B Biol Sci Articles Understanding the affective lives of animals has been a long-standing challenge in science. Recent technological progress in infrared thermal imaging has enabled researchers to monitor animals' physiological states in real-time when exposed to ecologically relevant situations, such as feeding in the company of others. During social feeding, an individual's physiological states are likely to vary with the nature of the resource and perceptions of competition. Previous findings in chimpanzees have indicated that events perceived as competitive cause decreases in nasal temperatures, whereas the opposite was observed for cooperative interactions. Here, we tested how food resources and audience structure impacted on how social feeding events were perceived by wild chimpanzees. Overall, we found that nasal temperatures were lower when meat was consumed as compared to figs, consistent with the idea that social feeding on more contested resources is perceived as more dangerous and stressful. Nasal temperatures were significant affected by interactions between food type and audience composition, in particular the number of males, their dominance status, and their social bond status relative to the subject, while no effects for the presence of females were observed. Our findings suggest that male chimpanzees closely monitor and assess their social environment during competitive situations, and that infrared imaging provides an important complement to access psychological processes beyond observable social behaviours. This article is part of the theme issue ‘Cognition, communication and social bonds in primates’. The Royal Society 2022-09-26 2022-08-08 /pmc/articles/PMC9358323/ /pubmed/35934961 http://dx.doi.org/10.1098/rstb.2021.0302 Text en © 2022 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Articles
Barrault, Claire
Soldati, Adrian
Hobaiter, Catherine
Mugisha, Stephen
De Moor, Delphine
Zuberbühler, Klaus
Dezecache, Guillaume
Thermal imaging reveals social monitoring during social feeding in wild chimpanzees
title Thermal imaging reveals social monitoring during social feeding in wild chimpanzees
title_full Thermal imaging reveals social monitoring during social feeding in wild chimpanzees
title_fullStr Thermal imaging reveals social monitoring during social feeding in wild chimpanzees
title_full_unstemmed Thermal imaging reveals social monitoring during social feeding in wild chimpanzees
title_short Thermal imaging reveals social monitoring during social feeding in wild chimpanzees
title_sort thermal imaging reveals social monitoring during social feeding in wild chimpanzees
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9358323/
https://www.ncbi.nlm.nih.gov/pubmed/35934961
http://dx.doi.org/10.1098/rstb.2021.0302
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