Born small, die young: Intrinsic, size-selective mortality in marine larval fish
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/11440 |
Resumo: | Mortality during the early stages is a major cause of the natural variations in the size and recruitment strength of marine fish populations. In this study, the relation between the size-at-hatch and early survival was assessed using laboratory experiments and on field-caught larvae of the European sardine (Sardina pilchardus). Larval size-at-hatch was not related to the egg size but was significantly, positively related to the diameter of the otolith-at-hatch. Otolith diameter-athatch was also significantly correlated with survival-at-age in fed and unfed larvae in the laboratory. For sardine larvae collected in the Bay of Biscay during the spring of 2008, otolith radius-at-hatch was also significantly related to viability. Larval mortality has frequently been related to adverse environmental conditions and intrinsic factors affecting feeding ability and vulnerability to predators. Our study offers evidence indicating that a significant portion of fish mortality occurs during the endogenous (yolk) and mixed (yolk /prey) feeding period in the absence of predators, revealing that marine fish with high fecundity, such as small pelagics, can spawn a relatively large amount of eggs resulting in small larvae with no chances to survive. Our findings help to better understand the mass mortalities occurring at early stages of marine fish. |
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Born small, die young: Intrinsic, size-selective mortality in marine larval fishSardine Sardina-PilchardusCod Gadus-MorhuaEarly-life-historyAtlantic codClupea-HarengusEgg sizePostsettlement survivorshipRecruitment variabilityGrowthTemperatureMortality during the early stages is a major cause of the natural variations in the size and recruitment strength of marine fish populations. In this study, the relation between the size-at-hatch and early survival was assessed using laboratory experiments and on field-caught larvae of the European sardine (Sardina pilchardus). Larval size-at-hatch was not related to the egg size but was significantly, positively related to the diameter of the otolith-at-hatch. Otolith diameter-athatch was also significantly correlated with survival-at-age in fed and unfed larvae in the laboratory. For sardine larvae collected in the Bay of Biscay during the spring of 2008, otolith radius-at-hatch was also significantly related to viability. Larval mortality has frequently been related to adverse environmental conditions and intrinsic factors affecting feeding ability and vulnerability to predators. Our study offers evidence indicating that a significant portion of fish mortality occurs during the endogenous (yolk) and mixed (yolk /prey) feeding period in the absence of predators, revealing that marine fish with high fecundity, such as small pelagics, can spawn a relatively large amount of eggs resulting in small larvae with no chances to survive. Our findings help to better understand the mass mortalities occurring at early stages of marine fish.Project VITAL [PTDC/MAR/111304/2009]; Portuguese Foundation for Science and Technology (FCT) [SFRH/BPD/38332/2007]; project MODELA [PTDC/MAR/098643/2008]; EU [227799]Nature Publishing GroupSapientiaGarrido, SusanaBen-Hamadou, RadhouanSantos, A. Miguel P.Ferreira, S.M A TeodosioCotano, U.Irigoien, X.Peck, M. A.Saiz, E.Re, P.2018-12-07T14:53:17Z20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/11440eng2045-232210.1038/srep17065info: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:RCAAP2023-07-24T10:23:15Zoai:sapientia.ualg.pt:10400.1/11440Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:02:56.942301Repositório 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 |
Born small, die young: Intrinsic, size-selective mortality in marine larval fish |
title |
Born small, die young: Intrinsic, size-selective mortality in marine larval fish |
spellingShingle |
Born small, die young: Intrinsic, size-selective mortality in marine larval fish Garrido, Susana Sardine Sardina-Pilchardus Cod Gadus-Morhua Early-life-history Atlantic cod Clupea-Harengus Egg size Postsettlement survivorship Recruitment variability Growth Temperature |
title_short |
Born small, die young: Intrinsic, size-selective mortality in marine larval fish |
title_full |
Born small, die young: Intrinsic, size-selective mortality in marine larval fish |
title_fullStr |
Born small, die young: Intrinsic, size-selective mortality in marine larval fish |
title_full_unstemmed |
Born small, die young: Intrinsic, size-selective mortality in marine larval fish |
title_sort |
Born small, die young: Intrinsic, size-selective mortality in marine larval fish |
author |
Garrido, Susana |
author_facet |
Garrido, Susana Ben-Hamadou, Radhouan Santos, A. Miguel P. Ferreira, S. M A Teodosio Cotano, U. Irigoien, X. Peck, M. A. Saiz, E. Re, P. |
author_role |
author |
author2 |
Ben-Hamadou, Radhouan Santos, A. Miguel P. Ferreira, S. M A Teodosio Cotano, U. Irigoien, X. Peck, M. A. Saiz, E. Re, P. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Garrido, Susana Ben-Hamadou, Radhouan Santos, A. Miguel P. Ferreira, S. M A Teodosio Cotano, U. Irigoien, X. Peck, M. A. Saiz, E. Re, P. |
dc.subject.por.fl_str_mv |
Sardine Sardina-Pilchardus Cod Gadus-Morhua Early-life-history Atlantic cod Clupea-Harengus Egg size Postsettlement survivorship Recruitment variability Growth Temperature |
topic |
Sardine Sardina-Pilchardus Cod Gadus-Morhua Early-life-history Atlantic cod Clupea-Harengus Egg size Postsettlement survivorship Recruitment variability Growth Temperature |
description |
Mortality during the early stages is a major cause of the natural variations in the size and recruitment strength of marine fish populations. In this study, the relation between the size-at-hatch and early survival was assessed using laboratory experiments and on field-caught larvae of the European sardine (Sardina pilchardus). Larval size-at-hatch was not related to the egg size but was significantly, positively related to the diameter of the otolith-at-hatch. Otolith diameter-athatch was also significantly correlated with survival-at-age in fed and unfed larvae in the laboratory. For sardine larvae collected in the Bay of Biscay during the spring of 2008, otolith radius-at-hatch was also significantly related to viability. Larval mortality has frequently been related to adverse environmental conditions and intrinsic factors affecting feeding ability and vulnerability to predators. Our study offers evidence indicating that a significant portion of fish mortality occurs during the endogenous (yolk) and mixed (yolk /prey) feeding period in the absence of predators, revealing that marine fish with high fecundity, such as small pelagics, can spawn a relatively large amount of eggs resulting in small larvae with no chances to survive. Our findings help to better understand the mass mortalities occurring at early stages of marine fish. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 2015-01-01T00:00:00Z 2018-12-07T14:53:17Z |
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 |
http://hdl.handle.net/10400.1/11440 |
url |
http://hdl.handle.net/10400.1/11440 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2045-2322 10.1038/srep17065 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Nature Publishing Group |
publisher.none.fl_str_mv |
Nature Publishing Group |
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 |
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1799133263498838016 |