Invasive alien species as an environmental stressor and its effects on coping style in a native competitor, the Eurasian red squirrel.

Adaptation, Psychological Animals Hypothalamo-Hypophyseal System Introduced Species Pituitary-Adrenal System Sciuridae
Behavioural syndrome Coping-style Faecal glucocorticoid metabolites Human-induced rapid environmental change Invasive species MCMCglmm Personality Repeatability Sciurus carolinensis Sciurus vulgaris

Journal

Hormones and behavior
ISSN: 1095-6867
Titre abrégé: Horm Behav
Pays: United States
ID NLM: 0217764

Informations de publication

Date de publication:
04 2022
Historique:
received: 21 05 2021
revised: 15 11 2021
accepted: 24 01 2022
pubmed: 6 2 2022
medline: 5 4 2022
entrez: 5 2 2022
Statut: ppublish

Résumé

Free-living animals cope with environmental stressors through physiological and behavioural responses. According to the unidimensional model, these responses are integrated within a coping style: proactive individuals (bold, active-explorative and social) have a lower hypothalamic-pituitary-adrenal (HPA) axis reactivity than reactive ones (shy, less active-explorative, less social). These associations may change when individuals are exposed to human-induced rapid environmental change (HIREC), such as the introduction of invasive alien species (IAS). Here, we studied Eurasian red squirrels to investigate the relationship between personality traits and one integrated measure of HPA axis activity, both in areas uncolonized (natural populations) and colonized by an IAS, the Eastern grey squirrel (invaded populations). We expected an association between physiological and behavioural responses, and that activity, exploration and social tendency would covary, forming a behavioural syndrome in natural populations, while competition with the IAS was predicted to disrupt these associations. We used faecal glucocorticoid metabolites (FGMs) as an integrated measure of adrenocortical activity, and measured the levels of four personality traits (exploration, activity, activity-exploration and social tendency) with an open field test and a mirror image stimulation test. We found no correlation between FGMs and personality traits, neither in natural nor invaded populations. However, we found correlations among personality traits in areas without interspecific competition, indicating a behavioural syndrome, which was disrupted in invaded populations. This is one of the few studies showing that an IAS, acting as an environmental stressor, alters a native species' behavioural syndrome, but does not influence its coping style.

Identifiants

DOI: 10.1016/j.yhbeh.2022.105127 PMID: 35121301
pubmed: 35121301
pii: S0018-506X(22)00021-6
doi: 10.1016/j.yhbeh.2022.105127
pii:
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

105127

Informations de copyright

Copyright © 2022 Elsevier Inc. All rights reserved.

Auteurs

Francesca Santicchia (F)

Environment Analysis and Management Unit, Guido Tosi Research Group, Department of Theoretical and Applied Sciences, Università degli Studi dell'Insubria, via J. H. Dunant 3, 21100 Varese, Italy. Electronic address: f.santicchia@uninsubria.it.

Lucas Armand Wauters (LA)

Environment Analysis and Management Unit, Guido Tosi Research Group, Department of Theoretical and Applied Sciences, Università degli Studi dell'Insubria, via J. H. Dunant 3, 21100 Varese, Italy; Evolutionary Ecology Group, Department of Biology, University of Antwerp, Campus Drie Eiken Universiteitsplein 1, 2610 Wilrijk, Belgium.

Claudia Tranquillo (C)

Environment Analysis and Management Unit, Guido Tosi Research Group, Department of Theoretical and Applied Sciences, Università degli Studi dell'Insubria, via J. H. Dunant 3, 21100 Varese, Italy.

Federica Villa (F)

Environment Analysis and Management Unit, Guido Tosi Research Group, Department of Theoretical and Applied Sciences, Università degli Studi dell'Insubria, via J. H. Dunant 3, 21100 Varese, Italy.

Ben Dantzer (B)

Department of Psychology, University of Michigan, 530 Church Street, Ann Arbor, MI 48109, USA; Department of Ecology and Evolutionary Biology, University of Michigan, 830 North University, Ann Arbor, MI 48109, USA.

Rupert Palme (R)

Unit of Physiology, Pathophysiology and Experimental Endocrinology, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria.

Damiano Preatoni (D)

Environment Analysis and Management Unit, Guido Tosi Research Group, Department of Theoretical and Applied Sciences, Università degli Studi dell'Insubria, via J. H. Dunant 3, 21100 Varese, Italy.

Adriano Martinoli (A)

Environment Analysis and Management Unit, Guido Tosi Research Group, Department of Theoretical and Applied Sciences, Università degli Studi dell'Insubria, via J. H. Dunant 3, 21100 Varese, Italy.

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Classifications MeSH

questionsmedicales.fr › Comportement et mécanismes comportementaux › Adaptation psychologique › Invasive alien species as an environmental...
questionsmedicales.fr › Eucaryotes › Animaux › Invasive alien species as an environmental...
questionsmedicales.fr › Système nerveux › Système neuroendocrinien › Axe hypothalamohypophysaire › Invasive alien species as an environmental...
questionsmedicales.fr › Environnement et santé publique › Environnement › Écosystème › Biodiversité › Espèce introduite › Invasive alien species as an environmental...
questionsmedicales.fr › Système endocrine › Glandes endocrines › Axe hypophyso-surrénalien › Invasive alien species as an environmental...
questionsmedicales.fr › Eucaryotes › Animaux › Chordés › Vertébrés › Mammifères › Eutheria › Rodentia › Sciuridae › Invasive alien species as an environmental...