Crustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.

Biogenic amines, particularly serotonin, are recognised to play an important role in controlling the aggression of invertebrates, whereas the effect of neurohormones is still underexplored. The crustacean Hyperglycemic Hormone (cHH) is a multifunctional member of the eyestalk neuropeptide family. We...

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Autores principales:	Laura Aquiloni, Piero G Giulianini, Alessandro Mosco, Corrado Guarnaccia, Enrico Ferrero, Francesca Gherardi
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1971a30938d143ebb60aff08eda65a7d
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spelling	oai:doaj.org-article:1971a30938d143ebb60aff08eda65a7d2021-11-18T08:08:25ZCrustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.1932-620310.1371/journal.pone.0050047https://doaj.org/article/1971a30938d143ebb60aff08eda65a7d2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23166815/?tool=EBIhttps://doaj.org/toc/1932-6203Biogenic amines, particularly serotonin, are recognised to play an important role in controlling the aggression of invertebrates, whereas the effect of neurohormones is still underexplored. The crustacean Hyperglycemic Hormone (cHH) is a multifunctional member of the eyestalk neuropeptide family. We expect that this neuropeptide influences aggression either directly, by controlling its expression, or indirectly, by mobilizing the energetic stores needed for the increased activity of an animal. Our study aims at testing such an influence and the possible reversion of hierarchies in the red swamp crayfish, Procambarus clarkii, as a model organism. Three types of pairs of similarly sized males were formed: (1) 'control pairs' (CP, n = 8): both individuals were injected with a phosphate saline solution (PBS); (2) 'reinforced pairs' (RP, n = 9): the alpha alone was injected with native cHH, and the beta with PBS; (3) 'inverted pairs' (IP, n = 9): the opposite of (2). We found that, independently of the crayfish's prior social experience, cHH injections induced (i) the expression of dominance behaviour, (ii) higher glycemic levels, and (iii) lower time spent motionless. In CP and RP, fight intensity decreased with the establishment of dominance. On the contrary, in IP, betas became increasingly likely to initiate and escalate fights and, consequently, increased their dominance till a temporary reversal of the hierarchy. Our results demonstrate, for the first time, that, similarly to serotonin, cHH enhances individual aggression, up to reverse, although transitorily, the hierarchical rank. New research perspectives are thus opened in our intriguing effort of understanding the role of cHH in the modulation of agonistic behaviour in crustaceans.Laura AquiloniPiero G GiulianiniAlessandro MoscoCorrado GuarnacciaEnrico FerreroFrancesca GherardiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 11, p e50047 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Laura Aquiloni Piero G Giulianini Alessandro Mosco Corrado Guarnaccia Enrico Ferrero Francesca Gherardi Crustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.
description	Biogenic amines, particularly serotonin, are recognised to play an important role in controlling the aggression of invertebrates, whereas the effect of neurohormones is still underexplored. The crustacean Hyperglycemic Hormone (cHH) is a multifunctional member of the eyestalk neuropeptide family. We expect that this neuropeptide influences aggression either directly, by controlling its expression, or indirectly, by mobilizing the energetic stores needed for the increased activity of an animal. Our study aims at testing such an influence and the possible reversion of hierarchies in the red swamp crayfish, Procambarus clarkii, as a model organism. Three types of pairs of similarly sized males were formed: (1) 'control pairs' (CP, n = 8): both individuals were injected with a phosphate saline solution (PBS); (2) 'reinforced pairs' (RP, n = 9): the alpha alone was injected with native cHH, and the beta with PBS; (3) 'inverted pairs' (IP, n = 9): the opposite of (2). We found that, independently of the crayfish's prior social experience, cHH injections induced (i) the expression of dominance behaviour, (ii) higher glycemic levels, and (iii) lower time spent motionless. In CP and RP, fight intensity decreased with the establishment of dominance. On the contrary, in IP, betas became increasingly likely to initiate and escalate fights and, consequently, increased their dominance till a temporary reversal of the hierarchy. Our results demonstrate, for the first time, that, similarly to serotonin, cHH enhances individual aggression, up to reverse, although transitorily, the hierarchical rank. New research perspectives are thus opened in our intriguing effort of understanding the role of cHH in the modulation of agonistic behaviour in crustaceans.
format	article
author	Laura Aquiloni Piero G Giulianini Alessandro Mosco Corrado Guarnaccia Enrico Ferrero Francesca Gherardi
author_facet	Laura Aquiloni Piero G Giulianini Alessandro Mosco Corrado Guarnaccia Enrico Ferrero Francesca Gherardi
author_sort	Laura Aquiloni
title	Crustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.
title_short	Crustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.
title_full	Crustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.
title_fullStr	Crustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.
title_full_unstemmed	Crustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.
title_sort	crustacean hyperglycemic hormone (chh) as a modulator of aggression in crustacean decapods.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/1971a30938d143ebb60aff08eda65a7d
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Crustacean hyperglycemic hormone (cHH) as a modulator of aggression in crustacean decapods.

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