Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.

Octopus maya is a carnivorous species and protein is the main energy source. During the present study, two different dietary protein levels (40 and 60% CP) were offered to octopuses as specifically designed artificial diets, to determine protein needs and the effects on metabolism. Frozen crab (Call...

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Autores: Rosas, Carlos, Sánchez, IUCN, Pascual, C., Águila, J., Maldonado, T., Rodrigues-dos-Santos-Domingues, Pedro Miguel
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/315320
Acceso en línea:http://hdl.handle.net/10261/315320
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de Vigo
Acuicultura
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spelling Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.Rosas, CarlosSánchez, IUCNPascual, C.Águila, J.Maldonado, T.Rodrigues-dos-Santos-Domingues, Pedro MiguelCentro Oceanográfico de VigoAcuiculturaOctopus maya is a carnivorous species and protein is the main energy source. During the present study, two different dietary protein levels (40 and 60% CP) were offered to octopuses as specifically designed artificial diets, to determine protein needs and the effects on metabolism. Frozen crab (Callinectes spp.) was used as control. Results obtained demonstrated that crab remains as one of the best diets for O. maya. The artificial diet with 60% CP produced a low but positive growth rate, and at times, a physiological response similar to that observed in octopuses fed crabs. The present results show the capacity of O. maya juveniles to adjust their digestive enzymes to different types of food and protein level, and this appears to be well correlated with octopus growth. General proteases and trypsin from the pancreas were well correlated with growth rates. A low activity was observed in octopuses fed 40% PC diet (negative growth rate), while a high activity was present in octopuses fed 60% CP diet and crabs (low and high growth rate, respectively). In contrast, these same enzymes were inducted in the salivary glands of octopuses fed with the diet that promoted weight loss (40% CP diet), while a reduced activity was observed in octopuses fed crabs. Energy budget indicates that the animals ingested more than 1,000 kJ week−1 kg−1; with such energy, octopuses should satisfy their physiological demands such as was observed when animals were fed crab (I = 1,300 kJ week−1 kg−1; P = 834 kJ week−1 kg−1). However, a very low digested energy was observed in octopuses the fed artificial diets, indicating that these could have a factor that limits digestibility.SíConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/315320reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de VigoSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3153202026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.
title Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.
spellingShingle Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.
Rosas, Carlos
Centro Oceanográfico de Vigo
Acuicultura
title_short Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.
title_full Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.
title_fullStr Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.
title_full_unstemmed Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.
title_sort Effects of two dietary protein levels on energy balance and digestive capacity of Octopus maya.
dc.creator.none.fl_str_mv Rosas, Carlos
Sánchez, IUCN
Pascual, C.
Águila, J.
Maldonado, T.
Rodrigues-dos-Santos-Domingues, Pedro Miguel
author Rosas, Carlos
author_facet Rosas, Carlos
Sánchez, IUCN
Pascual, C.
Águila, J.
Maldonado, T.
Rodrigues-dos-Santos-Domingues, Pedro Miguel
author_role author
author2 Sánchez, IUCN
Pascual, C.
Águila, J.
Maldonado, T.
Rodrigues-dos-Santos-Domingues, Pedro Miguel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Centro Oceanográfico de Vigo
Acuicultura
topic Centro Oceanográfico de Vigo
Acuicultura
description Octopus maya is a carnivorous species and protein is the main energy source. During the present study, two different dietary protein levels (40 and 60% CP) were offered to octopuses as specifically designed artificial diets, to determine protein needs and the effects on metabolism. Frozen crab (Callinectes spp.) was used as control. Results obtained demonstrated that crab remains as one of the best diets for O. maya. The artificial diet with 60% CP produced a low but positive growth rate, and at times, a physiological response similar to that observed in octopuses fed crabs. The present results show the capacity of O. maya juveniles to adjust their digestive enzymes to different types of food and protein level, and this appears to be well correlated with octopus growth. General proteases and trypsin from the pancreas were well correlated with growth rates. A low activity was observed in octopuses fed 40% PC diet (negative growth rate), while a high activity was present in octopuses fed 60% CP diet and crabs (low and high growth rate, respectively). In contrast, these same enzymes were inducted in the salivary glands of octopuses fed with the diet that promoted weight loss (40% CP diet), while a reduced activity was observed in octopuses fed crabs. Energy budget indicates that the animals ingested more than 1,000 kJ week−1 kg−1; with such energy, octopuses should satisfy their physiological demands such as was observed when animals were fed crab (I = 1,300 kJ week−1 kg−1; P = 834 kJ week−1 kg−1). However, a very low digested energy was observed in octopuses the fed artificial diets, indicating that these could have a factor that limits digestibility.
publishDate 2011
dc.date.none.fl_str_mv 2011
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/315320
url http://hdl.handle.net/10261/315320
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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