Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)

Detalhes bibliográficos
Autor(a) principal: Castanheira, Maria Filipa Bento de Oliveira Falcão
Data de Publicação: 2009
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/600
Resumo: Dissertação mest., Aquacultura e Pescas, Universidade do Algarve, 2009
id RCAP_37665a18b266d46669cb516c39f90998
oai_identifier_str oai:sapientia.ualg.pt:10400.1/600
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)TesesLinguado senegalêsSolea senegalensisAquaculturaCrescimentoAlimentaçãoMetabolismoDissertação mest., Aquacultura e Pescas, Universidade do Algarve, 2009The general aim of this study was to understand the underlying factors responsible for the individual variation in growth of juvenile Senegalese sole (Solea senegalensis). Senegalese sole is a species of high commercial value and high interest for aquaculture in Europe, therefore it would be important to understand these individual variations. Understanding the causes for individual variation in growth in relation with the feed intake, metabolic rate and response to stress contributes to maximize the production efficiency by reducing food waste and improving water quality. In order to identify the possible factors responsible for the individual variation in sole growth, its relationship with metabolic rate, stress response and feed intake was determined. Twelve fish with 18.49 ± 2.94g of initial weight were kept in standard conditions and feed once a day, during a period of six months. Individual oxygen consumption measurements in Sole juveniles were determined by flow-through respirometry at standard conditions, after the fish were fed a single meal and after a stressful condition. Blood samples for plasma cortisol, were taken from all fish at the start of the experiment (control, indicative of basal levels) and after stress exposure. Quantification of individual feed intake was performed by incorporation with radio-opaque ballotinis glass beads in a dry feed, followed by radiography to quantify the amount of ingested pellets. Individual fish exhibited pronounced variation in growth (final weight ranging from 30.45 to 67.53g), oxygen consumption of fasted fish (108.0 to 447.4 μmol/g/h), oxygen consumption of fed fish (174.7 μmol/g/h to 813.5 μmol/g/h), oxygen consumption after emersion stress (186.8 μmol/g/h to 376.7 μmol/g/h), and plasma cortisol after emersion stress (4.81 ng/ml to 46.45 ng/ml). Individual differences in metabolic rate do not contribute to explain individual differences in growth. However, after emersion stress individual differences in stress response seem to play a role in explaining individual differences in growth, what may result from different copying styles. Sole feed intake as measured by X-ray does not seem to be a good indicator of growth rate. The oxygen consumption increases both when fish are fed and after an emersion stress, as result of additive costs of growth and stress to the cost of maintenance. All together, this study suggests that individual variation of growth in Solea senegalensis is essentially due to genetic variation, and its reduction may accomplished when genetic selection programs are adopted. Furthermore, a study with a larger number of fish and over a larger time period would be important to check some of the trends found in this thesis between growth potential, metabolic rate and coping styles of Senegalese sole.Conceição, L. E. C.Engrola, S.SapientiaCastanheira, Maria Filipa Bento de Oliveira Falcão2011-09-07T16:05:06Z20092009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfhttp://hdl.handle.net/10400.1/600por639.3 CAS*Met Caveinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:11:23Zoai:sapientia.ualg.pt:10400.1/600Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:54:56.435579Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)
title Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)
spellingShingle Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)
Castanheira, Maria Filipa Bento de Oliveira Falcão
Teses
Linguado senegalês
Solea senegalensis
Aquacultura
Crescimento
Alimentação
Metabolismo
title_short Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)
title_full Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)
title_fullStr Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)
title_full_unstemmed Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)
title_sort Metabolic basis of growth variation in juvenile sole (Solea senegalensis, Kaup 1858)
author Castanheira, Maria Filipa Bento de Oliveira Falcão
author_facet Castanheira, Maria Filipa Bento de Oliveira Falcão
author_role author
dc.contributor.none.fl_str_mv Conceição, L. E. C.
Engrola, S.
Sapientia
dc.contributor.author.fl_str_mv Castanheira, Maria Filipa Bento de Oliveira Falcão
dc.subject.por.fl_str_mv Teses
Linguado senegalês
Solea senegalensis
Aquacultura
Crescimento
Alimentação
Metabolismo
topic Teses
Linguado senegalês
Solea senegalensis
Aquacultura
Crescimento
Alimentação
Metabolismo
description Dissertação mest., Aquacultura e Pescas, Universidade do Algarve, 2009
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-01-01T00:00:00Z
2011-09-07T16:05:06Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/600
url http://hdl.handle.net/10400.1/600
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 639.3 CAS*Met Cave
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799133149485072384

Registros relacionados