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Winning Fights Induces Hyperaggression via the Action of the Biogenic Amine Octopamine in Crickets

Winning an agonistic interaction against a conspecific is known to heighten aggressiveness, but the underlying events and mechanism are poorly understood. We quantified the effect of experiencing successive wins on aggression in adult male crickets (Gryllus bimaculatus) by staging knockout tournamen...

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Autores principales: Rillich, Jan, Stevenson, Paul Anthony
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3244434/
https://www.ncbi.nlm.nih.gov/pubmed/22216137
http://dx.doi.org/10.1371/journal.pone.0028891
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author Rillich, Jan
Stevenson, Paul Anthony
author_facet Rillich, Jan
Stevenson, Paul Anthony
author_sort Rillich, Jan
collection PubMed
description Winning an agonistic interaction against a conspecific is known to heighten aggressiveness, but the underlying events and mechanism are poorly understood. We quantified the effect of experiencing successive wins on aggression in adult male crickets (Gryllus bimaculatus) by staging knockout tournaments and investigated its dependence on biogenic amines by treatment with amine receptor antagonists. For an inter-fight interval of 5 min, fights between winners escalated to higher levels of aggression and lasted significantly longer than the preceding round. This winner effect is transient, and no longer evident for an inter-fight interval of 20 min, indicating that it does not result from selecting individuals that were hyper-aggressive from the outset. A winner effect was also evident in crickets that experienced wins without physical exertion, or that engaged in fights that were interrupted before a win was experienced. Finally, the winner effect was abolished by prior treatment with epinastine, a highly selective octopamine receptor blocker, but not by propranolol, a ß-adrenergic receptor antagonist, nor by yohimbine, an insect tyramine receptor blocker nor by fluphenazine an insect dopamine-receptor blocker. Taken together our study in the cricket indicates that the physical exertion of fighting, together with some rewarding aspect of the actual winning experience, leads to a transient increase in aggressive motivation via activation of the octopaminergic system, the invertebrate equivalent to the adrenergic system of vertebrates.
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spelling pubmed-32444342012-01-03 Winning Fights Induces Hyperaggression via the Action of the Biogenic Amine Octopamine in Crickets Rillich, Jan Stevenson, Paul Anthony PLoS One Research Article Winning an agonistic interaction against a conspecific is known to heighten aggressiveness, but the underlying events and mechanism are poorly understood. We quantified the effect of experiencing successive wins on aggression in adult male crickets (Gryllus bimaculatus) by staging knockout tournaments and investigated its dependence on biogenic amines by treatment with amine receptor antagonists. For an inter-fight interval of 5 min, fights between winners escalated to higher levels of aggression and lasted significantly longer than the preceding round. This winner effect is transient, and no longer evident for an inter-fight interval of 20 min, indicating that it does not result from selecting individuals that were hyper-aggressive from the outset. A winner effect was also evident in crickets that experienced wins without physical exertion, or that engaged in fights that were interrupted before a win was experienced. Finally, the winner effect was abolished by prior treatment with epinastine, a highly selective octopamine receptor blocker, but not by propranolol, a ß-adrenergic receptor antagonist, nor by yohimbine, an insect tyramine receptor blocker nor by fluphenazine an insect dopamine-receptor blocker. Taken together our study in the cricket indicates that the physical exertion of fighting, together with some rewarding aspect of the actual winning experience, leads to a transient increase in aggressive motivation via activation of the octopaminergic system, the invertebrate equivalent to the adrenergic system of vertebrates. Public Library of Science 2011-12-21 /pmc/articles/PMC3244434/ /pubmed/22216137 http://dx.doi.org/10.1371/journal.pone.0028891 Text en Rillich, Stevenson. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Rillich, Jan
Stevenson, Paul Anthony
Winning Fights Induces Hyperaggression via the Action of the Biogenic Amine Octopamine in Crickets
title Winning Fights Induces Hyperaggression via the Action of the Biogenic Amine Octopamine in Crickets
title_full Winning Fights Induces Hyperaggression via the Action of the Biogenic Amine Octopamine in Crickets
title_fullStr Winning Fights Induces Hyperaggression via the Action of the Biogenic Amine Octopamine in Crickets
title_full_unstemmed Winning Fights Induces Hyperaggression via the Action of the Biogenic Amine Octopamine in Crickets
title_short Winning Fights Induces Hyperaggression via the Action of the Biogenic Amine Octopamine in Crickets
title_sort winning fights induces hyperaggression via the action of the biogenic amine octopamine in crickets
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3244434/
https://www.ncbi.nlm.nih.gov/pubmed/22216137
http://dx.doi.org/10.1371/journal.pone.0028891
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