Energy balance of Octopus maya fed crab and artificial diet.

The present study was designed to evaluate the effect of a natural prey (the crab Callinectes sp.) and an artificial diet (pellet with squid paste and offered as a paste) on the survival and assimilation efficiency of subadult octopuses with 486 g of initial live weight. In order to reach this goal,...

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Autores: Rosas, Carlos, Cuzón, G., Pascual, C., Gaxiola, G., Chay, D., López-González, Nieves, Maldonado, T., Rodrigues-dos-Santos-Domingues, Pedro Miguel
Formato: artículo
Fecha de publicación:2007
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/315354
Acesso em linha:http://hdl.handle.net/10261/315354
Access Level:acceso abierto
Palavra-chave:Centro Oceanográfico de Vigo
Acuicultura
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spelling Energy balance of Octopus maya fed crab and artificial diet.Rosas, CarlosCuzón, G.Pascual, C.Gaxiola, G.Chay, D.López-González, NievesMaldonado, T.Rodrigues-dos-Santos-Domingues, Pedro MiguelCentro Oceanográfico de VigoAcuiculturaThe present study was designed to evaluate the effect of a natural prey (the crab Callinectes sp.) and an artificial diet (pellet with squid paste and offered as a paste) on the survival and assimilation efficiency of subadult octopuses with 486 g of initial live weight. In order to reach this goal, the effects of the type of diet on energetic balance were assessed by recording ingestion rate (C), respiratory rate (R = R routine, Rrout + R apparent heat increment, RAHI), ammonia production rate (U = U routine, Urout + U post-prandial, UPP) and biomass production (P) of Octopus maya during its growing process. Energy lost from faeces (H) was calculated as H=C−(U+R+P) and assimilated energy (As) as R + P. Octopuses fed an artificial diet had almost five times higher ingestion rate compared to that observed in octopuses fed crab. However, growth rate and production (P) were high in octopuses fed crab in comparison to octopuses fed artificial diet. An inverse relation between faeces (H) and type of food was observed, indicating that animals lost 77% of the ingested energy when fed artificial diet and only 5% when fed crab. A higher assimilation and production efficiency were obtained in octopuses fed crab (P/As: 61%) than in animals fed the artificial diet (P/As: −5%). The routine O : N ratio for animals in fasting was 9.1 and 2.3 for octopuses being fed crabs and the artificial diet, respectively. The post-alimentary O : N ratio was 3.6 and 2.2 for animals fed crabs and the artificial diet, respectively. This indicates that animals fed on both diets rely almost exclusively on protein. Based on energy balance data, a value of 472 kJ week−1 kg−1 of live octopus was estimated as the energy needed to obtain a growth rate near 9 g day−1 (2.8% BW day−1) for O. maya subadults. The total crab biomass needed to obtain 1 kg of fed O. maya biomass was calculated. A comparison with other different energy balance measurements made in other octopus species indicates that O. maya and Enteroctopus megalocyathus (Pérez et al. 2006) tend to be more efficient by channelling more ingested energy to biomass production (P = 69.5% of C) than O. vulgaris (P = 23% of C; Petza et al. 2006) or Paraledone charcoti (P = 4% of C; Daly and Peck 2000).Sí202320232007info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/315354reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Vigoinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3153542026-05-22T06:33:51Z
dc.title.none.fl_str_mv Energy balance of Octopus maya fed crab and artificial diet.
title Energy balance of Octopus maya fed crab and artificial diet.
spellingShingle Energy balance of Octopus maya fed crab and artificial diet.
Rosas, Carlos
Centro Oceanográfico de Vigo
Acuicultura
title_short Energy balance of Octopus maya fed crab and artificial diet.
title_full Energy balance of Octopus maya fed crab and artificial diet.
title_fullStr Energy balance of Octopus maya fed crab and artificial diet.
title_full_unstemmed Energy balance of Octopus maya fed crab and artificial diet.
title_sort Energy balance of Octopus maya fed crab and artificial diet.
dc.creator.none.fl_str_mv Rosas, Carlos
Cuzón, G.
Pascual, C.
Gaxiola, G.
Chay, D.
López-González, Nieves
Maldonado, T.
Rodrigues-dos-Santos-Domingues, Pedro Miguel
author Rosas, Carlos
author_facet Rosas, Carlos
Cuzón, G.
Pascual, C.
Gaxiola, G.
Chay, D.
López-González, Nieves
Maldonado, T.
Rodrigues-dos-Santos-Domingues, Pedro Miguel
author_role author
author2 Cuzón, G.
Pascual, C.
Gaxiola, G.
Chay, D.
López-González, Nieves
Maldonado, T.
Rodrigues-dos-Santos-Domingues, Pedro Miguel
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de Vigo
Acuicultura
topic Centro Oceanográfico de Vigo
Acuicultura
description The present study was designed to evaluate the effect of a natural prey (the crab Callinectes sp.) and an artificial diet (pellet with squid paste and offered as a paste) on the survival and assimilation efficiency of subadult octopuses with 486 g of initial live weight. In order to reach this goal, the effects of the type of diet on energetic balance were assessed by recording ingestion rate (C), respiratory rate (R = R routine, Rrout + R apparent heat increment, RAHI), ammonia production rate (U = U routine, Urout + U post-prandial, UPP) and biomass production (P) of Octopus maya during its growing process. Energy lost from faeces (H) was calculated as H=C−(U+R+P) and assimilated energy (As) as R + P. Octopuses fed an artificial diet had almost five times higher ingestion rate compared to that observed in octopuses fed crab. However, growth rate and production (P) were high in octopuses fed crab in comparison to octopuses fed artificial diet. An inverse relation between faeces (H) and type of food was observed, indicating that animals lost 77% of the ingested energy when fed artificial diet and only 5% when fed crab. A higher assimilation and production efficiency were obtained in octopuses fed crab (P/As: 61%) than in animals fed the artificial diet (P/As: −5%). The routine O : N ratio for animals in fasting was 9.1 and 2.3 for octopuses being fed crabs and the artificial diet, respectively. The post-alimentary O : N ratio was 3.6 and 2.2 for animals fed crabs and the artificial diet, respectively. This indicates that animals fed on both diets rely almost exclusively on protein. Based on energy balance data, a value of 472 kJ week−1 kg−1 of live octopus was estimated as the energy needed to obtain a growth rate near 9 g day−1 (2.8% BW day−1) for O. maya subadults. The total crab biomass needed to obtain 1 kg of fed O. maya biomass was calculated. A comparison with other different energy balance measurements made in other octopus species indicates that O. maya and Enteroctopus megalocyathus (Pérez et al. 2006) tend to be more efficient by channelling more ingested energy to biomass production (P = 69.5% of C) than O. vulgaris (P = 23% of C; Petza et al. 2006) or Paraledone charcoti (P = 4% of C; Daly and Peck 2000).
publishDate 2007
dc.date.none.fl_str_mv 2007
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/10261/315354
url http://hdl.handle.net/10261/315354
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
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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score 15.811543

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