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Anxiety-like behaviour increases safety from fish predation in an amphipod crustacea
Anxiety is an emotional state generally expressed as sustained apprehension of the environment and elevated vigilance. It has been widely reported in vertebrates and, more recently, in a few invertebrate species. However, its fitness value remains elusive. We investigated anxiety-like behaviour and...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society Publishing
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5750038/ https://www.ncbi.nlm.nih.gov/pubmed/29308271 http://dx.doi.org/10.1098/rsos.171558 |
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author | Perrot-Minnot, Marie-Jeanne Banchetry, Loan Cézilly, Frank |
author_facet | Perrot-Minnot, Marie-Jeanne Banchetry, Loan Cézilly, Frank |
author_sort | Perrot-Minnot, Marie-Jeanne |
collection | PubMed |
description | Anxiety is an emotional state generally expressed as sustained apprehension of the environment and elevated vigilance. It has been widely reported in vertebrates and, more recently, in a few invertebrate species. However, its fitness value remains elusive. We investigated anxiety-like behaviour and its consequences in an amphipod crustacean, using electric shock as aversive stimuli, and pharmacological assays. An anxiety-like state induced by electric shocks in Gammarus fossarum was expressed through increased sheltering behaviour in the absence of predation risk, thereby showing the pervasive nature of such behavioural response. Increasing the number of electric shocks both increased refuge use and delayed behavioural recovery. The behavioural effect of electric shock was mitigated by pre-treatment with LY354740, a metabotropic glutamate receptor group II/III agonist. Importantly, we found that this modulation of decision-making under an anxiety-like state resulted in an increased survival to predation in microcosm experiments. This study confirms the interest in taking an evolutionary view to the study of anxiety and calls for further investigation on the costs counterbalancing the survival benefit of an elevated anxiety level evidenced here. |
format | Online Article Text |
id | pubmed-5750038 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | The Royal Society Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-57500382018-01-07 Anxiety-like behaviour increases safety from fish predation in an amphipod crustacea Perrot-Minnot, Marie-Jeanne Banchetry, Loan Cézilly, Frank R Soc Open Sci Biology (Whole Organism) Anxiety is an emotional state generally expressed as sustained apprehension of the environment and elevated vigilance. It has been widely reported in vertebrates and, more recently, in a few invertebrate species. However, its fitness value remains elusive. We investigated anxiety-like behaviour and its consequences in an amphipod crustacean, using electric shock as aversive stimuli, and pharmacological assays. An anxiety-like state induced by electric shocks in Gammarus fossarum was expressed through increased sheltering behaviour in the absence of predation risk, thereby showing the pervasive nature of such behavioural response. Increasing the number of electric shocks both increased refuge use and delayed behavioural recovery. The behavioural effect of electric shock was mitigated by pre-treatment with LY354740, a metabotropic glutamate receptor group II/III agonist. Importantly, we found that this modulation of decision-making under an anxiety-like state resulted in an increased survival to predation in microcosm experiments. This study confirms the interest in taking an evolutionary view to the study of anxiety and calls for further investigation on the costs counterbalancing the survival benefit of an elevated anxiety level evidenced here. The Royal Society Publishing 2017-12-06 /pmc/articles/PMC5750038/ /pubmed/29308271 http://dx.doi.org/10.1098/rsos.171558 Text en © 2017 The Authors. http://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/, which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Biology (Whole Organism) Perrot-Minnot, Marie-Jeanne Banchetry, Loan Cézilly, Frank Anxiety-like behaviour increases safety from fish predation in an amphipod crustacea |
title | Anxiety-like behaviour increases safety from fish predation in an amphipod crustacea |
title_full | Anxiety-like behaviour increases safety from fish predation in an amphipod crustacea |
title_fullStr | Anxiety-like behaviour increases safety from fish predation in an amphipod crustacea |
title_full_unstemmed | Anxiety-like behaviour increases safety from fish predation in an amphipod crustacea |
title_short | Anxiety-like behaviour increases safety from fish predation in an amphipod crustacea |
title_sort | anxiety-like behaviour increases safety from fish predation in an amphipod crustacea |
topic | Biology (Whole Organism) |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5750038/ https://www.ncbi.nlm.nih.gov/pubmed/29308271 http://dx.doi.org/10.1098/rsos.171558 |
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