Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAM

ABSTRACT: Fish actively select an adequate environment that fits their optimum culture/preferred temperature, this mechanism is called thermoregulatory behavior. However, what exactly is this mechanism, how does it work and what can we learn from it? Helped by their thermal limits, fish avoid temper...

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Autores principales:	Medina-Romo,Evnika Zarina, Díaz,Fernando, Re-Araujo,Ana Denise, Ibarra-Castro,Leonardo, Garduño-Lugo,Mario, Latorre-Pozos,Erendira Rocío, Larios-Soriano,Ernesto, Rosas,Carlos
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	critical thermal preferred temperature thermal window metabolism lactate aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000500935
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spelling	oai:scielo:S0718-560X20180005009352019-04-03Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAMMedina-Romo,Evnika ZarinaDíaz,FernandoRe-Araujo,Ana DeniseIbarra-Castro,LeonardoGarduño-Lugo,MarioLatorre-Pozos,Erendira RocíoLarios-Soriano,ErnestoRosas,Carlos critical thermal preferred temperature thermal window metabolism lactate aquaculture ABSTRACT: Fish actively select an adequate environment that fits their optimum culture/preferred temperature, this mechanism is called thermoregulatory behavior. However, what exactly is this mechanism, how does it work and what can we learn from it? Helped by their thermal limits, fish avoid temperature variations not favorable for their maximum growth. They find a thermal window where optimal temperature culture is located and use it in the best way possible for all activities. The present study is based on thermal biology studies, and its purpose is to learn the aerobic scope functions on Pargo-UNAM juveniles. The importance of this study is related to the fact that Pargo-UNAM fish, being a hybrid, has five different genetic backgrounds. We found that acclimation temperature influenced the preferred temperature of Pargo-UNAM, having a metabolic adjustment in the 20-32ºC range; the Final preferendum obtained was 29.5ºC. The maximum and minimum range of critical thermal limits was between 39.2-43.5ºC and 8-14.9ºC, respectively. The thermal window had an area of 355.2ºC2. The acclimation response ratio had a 0.40-0.35 interval for CTMax, and 0.52-0.69 for CTmin. Chase method used in Pargo-UNAM caused a maximum aerobic scope at 29ºC. Blood lactate concentration was the highest in fish acclimated at 20ºC; these values decreased while acclimation temperature increased. Results from Pargo-UNAM juveniles showed that these can be grown successfully in a 26-32ºC temperature range, with their greater performance at 29ºC, where the aerobic scope was at its maximum capacity.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.5 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000500935en10.3856/vol46-issue5-fulltext-7
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	critical thermal preferred temperature thermal window metabolism lactate aquaculture
spellingShingle	critical thermal preferred temperature thermal window metabolism lactate aquaculture Medina-Romo,Evnika Zarina Díaz,Fernando Re-Araujo,Ana Denise Ibarra-Castro,Leonardo Garduño-Lugo,Mario Latorre-Pozos,Erendira Rocío Larios-Soriano,Ernesto Rosas,Carlos Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAM
description	ABSTRACT: Fish actively select an adequate environment that fits their optimum culture/preferred temperature, this mechanism is called thermoregulatory behavior. However, what exactly is this mechanism, how does it work and what can we learn from it? Helped by their thermal limits, fish avoid temperature variations not favorable for their maximum growth. They find a thermal window where optimal temperature culture is located and use it in the best way possible for all activities. The present study is based on thermal biology studies, and its purpose is to learn the aerobic scope functions on Pargo-UNAM juveniles. The importance of this study is related to the fact that Pargo-UNAM fish, being a hybrid, has five different genetic backgrounds. We found that acclimation temperature influenced the preferred temperature of Pargo-UNAM, having a metabolic adjustment in the 20-32ºC range; the Final preferendum obtained was 29.5ºC. The maximum and minimum range of critical thermal limits was between 39.2-43.5ºC and 8-14.9ºC, respectively. The thermal window had an area of 355.2ºC2. The acclimation response ratio had a 0.40-0.35 interval for CTMax, and 0.52-0.69 for CTmin. Chase method used in Pargo-UNAM caused a maximum aerobic scope at 29ºC. Blood lactate concentration was the highest in fish acclimated at 20ºC; these values decreased while acclimation temperature increased. Results from Pargo-UNAM juveniles showed that these can be grown successfully in a 26-32ºC temperature range, with their greater performance at 29ºC, where the aerobic scope was at its maximum capacity.
author	Medina-Romo,Evnika Zarina Díaz,Fernando Re-Araujo,Ana Denise Ibarra-Castro,Leonardo Garduño-Lugo,Mario Latorre-Pozos,Erendira Rocío Larios-Soriano,Ernesto Rosas,Carlos
author_facet	Medina-Romo,Evnika Zarina Díaz,Fernando Re-Araujo,Ana Denise Ibarra-Castro,Leonardo Garduño-Lugo,Mario Latorre-Pozos,Erendira Rocío Larios-Soriano,Ernesto Rosas,Carlos
author_sort	Medina-Romo,Evnika Zarina
title	Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAM
title_short	Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAM
title_full	Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAM
title_fullStr	Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAM
title_full_unstemmed	Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAM
title_sort	thermal tolerance and aerobic scope of tetra-hybrid tilapia pargo-unam
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=S0718-560X2018000500935
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_version_	1714205209824067584

Thermal tolerance and aerobic scope of tetra-hybrid tilapia Pargo-UNAM

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