Use of infrared thermography to detect reactions to stressful events: does animal personality matter?

Autor: Mazzamuto MV; School of Natural Resources and Environment, College of Agriculture and Life Science, University of Arizona, Arizona, USA.; Unità di Analisi e Gestione delle Risorse Ambientali, Dipartimento di Scienze Teoriche e Applicate, Guido Tosi Research Group, Università degli Studi dell'Insubria, Varese, Italy., Morandini M; School of Natural Resources and Environment, College of Agriculture and Life Science, University of Arizona, Arizona, USA., Lampman W; School of Natural Resources and Environment, College of Agriculture and Life Science, University of Arizona, Arizona, USA., Wauters LA; Unità di Analisi e Gestione delle Risorse Ambientali, Dipartimento di Scienze Teoriche e Applicate, Guido Tosi Research Group, Università degli Studi dell'Insubria, Varese, Italy., Preatoni D; Unità di Analisi e Gestione delle Risorse Ambientali, Dipartimento di Scienze Teoriche e Applicate, Guido Tosi Research Group, Università degli Studi dell'Insubria, Varese, Italy., Koprowski JL; School of Natural Resources and Environment, College of Agriculture and Life Science, University of Arizona, Arizona, USA.; Haub School of Environment and Natural Resources, University of Wyoming, Wyoming, USA., Martinoli A; Unità di Analisi e Gestione delle Risorse Ambientali, Dipartimento di Scienze Teoriche e Applicate, Guido Tosi Research Group, Università degli Studi dell'Insubria, Varese, Italy.
Jazyk: angličtina
Zdroj: Integrative zoology [Integr Zool] 2024 Mar; Vol. 19 (2), pp. 224-239. Date of Electronic Publication: 2023 May 29.
DOI: 10.1111/1749-4877.12735
Abstrakt: The study of the relationship between animal stress and personality for free-ranging animals is limited and provides contrasting results. The perception of stressors by an individual may vary due to its personality, and certain personality traits may help individuals to better cope with them. Using non-invasive infrared thermography (IRT), we investigated the link between physiological and behavioral components expressed during an acute stress event by free-ranging Fremont's squirrels (Tamiasciurus fremonti). We expected that, during the acute stress event of being approached by the researcher, individuals that showed a fast pace-of-life syndrome (bolder, more active, and less social/more aggressive) based on an arena test would exhibit stronger sympathetic-adrenal-medullary system reactivity showing a more intense stress-induced hyperthermia (high core body temperature and low peripheral temperature) than individuals with a slow pace of life (shy, less active, and more social). We successfully employed IRT technology to images of Fremont's squirrels with identification of the individuals' body parts (eye, nose, ear, hind foot). However, we found no support for our hypothesis. Squirrels' body surface temperatures told us more about a squirrel's external environment and less about the thermal state of the body in that environment following a stressful event. Further studies need to assess how to make IRT effective and efficient in the field and improve its performance in studying the relationships between physiology and personality in wildlife.
(© 2023 International Society of Zoological Sciences, Institute of Zoology/Chinese Academy of Sciences and John Wiley & Sons Australia, Ltd.)
Databáze: MEDLINE
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