Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stress

ABSTRACT Neuroendocrine mechanisms involved in crustacean stress response are different and less understood than those of vertebrates. Although indirect evidence suggests the participation of catecholamines (CA), few studies have analyzed their levels during stress response in crustaceans. This stud...

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Autores principales:	Aparicio-Simón,Benjamín, Piñón,Manuel, Racotta,Radu, Racotta,Ilie S.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	Penaeus vannamei catecholamines glucose lactate eyestalk hemolymph aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200364
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spelling	oai:scielo:S0718-560X20180002003642018-06-13Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stressAparicio-Simón,BenjamínPiñón,ManuelRacotta,RaduRacotta,Ilie S. Penaeus vannamei catecholamines glucose lactate eyestalk hemolymph aquaculture ABSTRACT Neuroendocrine mechanisms involved in crustacean stress response are different and less understood than those of vertebrates. Although indirect evidence suggests the participation of catecholamines (CA), few studies have analyzed their levels during stress response in crustaceans. This study examined CA levels in hemolymph and tissue of whiteleg shrimp Penaeus vannamei besides other biochemical indicators in response to hypoxia (0.8-1.0 mg L-1). Shrimp were stressed by hypoxia exposure, and their responses were analyzed at several intervals (10-480 min). Hemolymph glucose levels decreased gradually due to a higher demand not compensated by the gluconeogenesis process from hepatopancreas or muscle after 10 min. Lactate levels in hemolymph showed a 5-fold increase after 10 min, and a correlation with CA levels in hemolymph was observed suggesting its possible role in signaling catecholaminergic activation from eyestalk in a period from 10 to 120 min. Protein levels in muscle and hepatopancreas increased gradually throughout the trial indicating the possible use of another energetic substrate as arginine phosphate. A decrease in triacylglyceride levels denotes its preferential utilization as an immediate energy source in the scape response during the first minutes of hypoxia exposure. Heart adrenaline and noradrenaline levels increased rapidly at the beginning of the trial showing a correlation with the use of triacylglycerides and carbohydrates in hepatopancreas and muscle (r = 0.89 and r = 0.93, P < 0.05, respectively). This manuscript reports evidence of CA participation in response to stress due to hypoxia and discusses possible adaptation mechanisms.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.2 20182018-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200364en10.3856/vol46-issue2-fulltext-12
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Penaeus vannamei catecholamines glucose lactate eyestalk hemolymph aquaculture
spellingShingle	Penaeus vannamei catecholamines glucose lactate eyestalk hemolymph aquaculture Aparicio-Simón,Benjamín Piñón,Manuel Racotta,Radu Racotta,Ilie S. Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stress
description	ABSTRACT Neuroendocrine mechanisms involved in crustacean stress response are different and less understood than those of vertebrates. Although indirect evidence suggests the participation of catecholamines (CA), few studies have analyzed their levels during stress response in crustaceans. This study examined CA levels in hemolymph and tissue of whiteleg shrimp Penaeus vannamei besides other biochemical indicators in response to hypoxia (0.8-1.0 mg L-1). Shrimp were stressed by hypoxia exposure, and their responses were analyzed at several intervals (10-480 min). Hemolymph glucose levels decreased gradually due to a higher demand not compensated by the gluconeogenesis process from hepatopancreas or muscle after 10 min. Lactate levels in hemolymph showed a 5-fold increase after 10 min, and a correlation with CA levels in hemolymph was observed suggesting its possible role in signaling catecholaminergic activation from eyestalk in a period from 10 to 120 min. Protein levels in muscle and hepatopancreas increased gradually throughout the trial indicating the possible use of another energetic substrate as arginine phosphate. A decrease in triacylglyceride levels denotes its preferential utilization as an immediate energy source in the scape response during the first minutes of hypoxia exposure. Heart adrenaline and noradrenaline levels increased rapidly at the beginning of the trial showing a correlation with the use of triacylglycerides and carbohydrates in hepatopancreas and muscle (r = 0.89 and r = 0.93, P < 0.05, respectively). This manuscript reports evidence of CA participation in response to stress due to hypoxia and discusses possible adaptation mechanisms.
author	Aparicio-Simón,Benjamín Piñón,Manuel Racotta,Radu Racotta,Ilie S.
author_facet	Aparicio-Simón,Benjamín Piñón,Manuel Racotta,Radu Racotta,Ilie S.
author_sort	Aparicio-Simón,Benjamín
title	Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stress
title_short	Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stress
title_full	Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stress
title_fullStr	Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stress
title_full_unstemmed	Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stress
title_sort	neuroendocrine and metabolic responses of pacific whiteleg shrimp penaeus vannamei exposed to hypoxia stress
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200364
work_keys_str_mv	AT apariciosimonbenjamin neuroendocrineandmetabolicresponsesofpacificwhitelegshrimppenaeusvannameiexposedtohypoxiastress AT pinonmanuel neuroendocrineandmetabolicresponsesofpacificwhitelegshrimppenaeusvannameiexposedtohypoxiastress AT racottaradu neuroendocrineandmetabolicresponsesofpacificwhitelegshrimppenaeusvannameiexposedtohypoxiastress AT racottailies neuroendocrineandmetabolicresponsesofpacificwhitelegshrimppenaeusvannameiexposedtohypoxiastress
_version_	1714205199201992704

Neuroendocrine and metabolic responses of Pacific whiteleg shrimp Penaeus vannamei exposed to hypoxia stress

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