Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)

Detalhes bibliográficos
Autor(a) principal: Rato A.
Data de Publicação: 2018
Outros Autores: Joaquim S., Tavares T.G., Martins Z.E., Guedes A.C., Pereira L.F., Machado J., Matias A.M., Gonçalves J.F.M., Vaz-Pires P., Magnoni L.J., Ozório R.O.A., Matias D.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/10216/120510
Resumo: The current study evaluated the microalgae replacement by dry macroalgae (Ulva rigida) in the reproductive success and biochemical composition of the Pacific oyster (Crassostrea gigas) during broodstock conditioning. Five nutritional regimes were tested: 100% macroalgae (diet 1), 50% macroalgae+50% microalgae (diet 2), 25% macroalgae+75% microalgae (diet 3) and 100% microalgae (diet 4). An unfed group was used as a negative control. The microalgae blend was composed of 33% Isochrysis galbana and 67% diatoms (75% Skeletonema costatum+25% Chaetoceros calcitrans). Gonadal maturation was reflected in the physiological condition of the individuals. All treatments, except diet 1, showed an increase in condition index and were fully matured at the end of the trial, with the best physiological condition observed in oysters fed diet 3 and diet 4. Protein and total lipid content increased during the conditioning period, whereas glycogen content decreased. Oysters conditioned with diet 3 had higher protein and total lipid content and lower glycogen content than the other treatments. In addition, diet 3 showed the highest percentage of viable veliger larvae. The current study demonstrated that it is possible to replace 25% of microalgae with macroalgae in the broodstock conditioning, minimizing the operative cost in bivalve hatcheries. © 2018. Published by The Company of Biologists
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spelling Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)animal experimentanimal tissueArticlebiochemical compositioncarbohydrate intakeChaetocerosChaetoceros calcitranscontrolled studyCrassostrea gigasdietfat intakefemalefertilizationgametogenesisglycogen analysisgonad developmenthatcheryhistologyIsochrysis galbanamaturationmicroalganonhumanprotein contentprotein intakereproductive successSkeletonemaSkeletonema costatumspawningUlvaUlva rigidaveligerThe current study evaluated the microalgae replacement by dry macroalgae (Ulva rigida) in the reproductive success and biochemical composition of the Pacific oyster (Crassostrea gigas) during broodstock conditioning. Five nutritional regimes were tested: 100% macroalgae (diet 1), 50% macroalgae+50% microalgae (diet 2), 25% macroalgae+75% microalgae (diet 3) and 100% microalgae (diet 4). An unfed group was used as a negative control. The microalgae blend was composed of 33% Isochrysis galbana and 67% diatoms (75% Skeletonema costatum+25% Chaetoceros calcitrans). Gonadal maturation was reflected in the physiological condition of the individuals. All treatments, except diet 1, showed an increase in condition index and were fully matured at the end of the trial, with the best physiological condition observed in oysters fed diet 3 and diet 4. Protein and total lipid content increased during the conditioning period, whereas glycogen content decreased. Oysters conditioned with diet 3 had higher protein and total lipid content and lower glycogen content than the other treatments. In addition, diet 3 showed the highest percentage of viable veliger larvae. The current study demonstrated that it is possible to replace 25% of microalgae with macroalgae in the broodstock conditioning, minimizing the operative cost in bivalve hatcheries. © 2018. Published by The Company of BiologistsCompany of Biologists20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10216/120510eng2046639010.1242/bio.035923Rato A.Joaquim S.Tavares T.G.Martins Z.E.Guedes A.C.Pereira L.F.Machado J.Matias A.M.Gonçalves J.F.M.Vaz-Pires P.Magnoni L.J.Ozório R.O.A.Matias D.info: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:RCAAP2023-11-29T15:52:44Zoai:repositorio-aberto.up.pt:10216/120510Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:34:26.917795Repositório 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 Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)
title Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)
spellingShingle Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)
Rato A.
animal experiment
animal tissue
Article
biochemical composition
carbohydrate intake
Chaetoceros
Chaetoceros calcitrans
controlled study
Crassostrea gigas
diet
fat intake
female
fertilization
gametogenesis
glycogen analysis
gonad development
hatchery
histology
Isochrysis galbana
maturation
microalga
nonhuman
protein content
protein intake
reproductive success
Skeletonema
Skeletonema costatum
spawning
Ulva
Ulva rigida
veliger
title_short Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)
title_full Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)
title_fullStr Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)
title_full_unstemmed Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)
title_sort Viability of dietary substitution of live microalgae with dry Ulva rigida in broodstock conditioning of the Pacific oyster (Crassostrea gigas)
author Rato A.
author_facet Rato A.
Joaquim S.
Tavares T.G.
Martins Z.E.
Guedes A.C.
Pereira L.F.
Machado J.
Matias A.M.
Gonçalves J.F.M.
Vaz-Pires P.
Magnoni L.J.
Ozório R.O.A.
Matias D.
author_role author
author2 Joaquim S.
Tavares T.G.
Martins Z.E.
Guedes A.C.
Pereira L.F.
Machado J.
Matias A.M.
Gonçalves J.F.M.
Vaz-Pires P.
Magnoni L.J.
Ozório R.O.A.
Matias D.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Rato A.
Joaquim S.
Tavares T.G.
Martins Z.E.
Guedes A.C.
Pereira L.F.
Machado J.
Matias A.M.
Gonçalves J.F.M.
Vaz-Pires P.
Magnoni L.J.
Ozório R.O.A.
Matias D.
dc.subject.por.fl_str_mv animal experiment
animal tissue
Article
biochemical composition
carbohydrate intake
Chaetoceros
Chaetoceros calcitrans
controlled study
Crassostrea gigas
diet
fat intake
female
fertilization
gametogenesis
glycogen analysis
gonad development
hatchery
histology
Isochrysis galbana
maturation
microalga
nonhuman
protein content
protein intake
reproductive success
Skeletonema
Skeletonema costatum
spawning
Ulva
Ulva rigida
veliger
topic animal experiment
animal tissue
Article
biochemical composition
carbohydrate intake
Chaetoceros
Chaetoceros calcitrans
controlled study
Crassostrea gigas
diet
fat intake
female
fertilization
gametogenesis
glycogen analysis
gonad development
hatchery
histology
Isochrysis galbana
maturation
microalga
nonhuman
protein content
protein intake
reproductive success
Skeletonema
Skeletonema costatum
spawning
Ulva
Ulva rigida
veliger
description The current study evaluated the microalgae replacement by dry macroalgae (Ulva rigida) in the reproductive success and biochemical composition of the Pacific oyster (Crassostrea gigas) during broodstock conditioning. Five nutritional regimes were tested: 100% macroalgae (diet 1), 50% macroalgae+50% microalgae (diet 2), 25% macroalgae+75% microalgae (diet 3) and 100% microalgae (diet 4). An unfed group was used as a negative control. The microalgae blend was composed of 33% Isochrysis galbana and 67% diatoms (75% Skeletonema costatum+25% Chaetoceros calcitrans). Gonadal maturation was reflected in the physiological condition of the individuals. All treatments, except diet 1, showed an increase in condition index and were fully matured at the end of the trial, with the best physiological condition observed in oysters fed diet 3 and diet 4. Protein and total lipid content increased during the conditioning period, whereas glycogen content decreased. Oysters conditioned with diet 3 had higher protein and total lipid content and lower glycogen content than the other treatments. In addition, diet 3 showed the highest percentage of viable veliger larvae. The current study demonstrated that it is possible to replace 25% of microalgae with macroalgae in the broodstock conditioning, minimizing the operative cost in bivalve hatcheries. © 2018. Published by The Company of Biologists
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/10216/120510
url https://hdl.handle.net/10216/120510
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 20466390
10.1242/bio.035923
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dc.publisher.none.fl_str_mv Company of Biologists
publisher.none.fl_str_mv Company of Biologists
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
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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
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