Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea

Survival during the settlement window is a limiting variable for recruitment. The survival is believed to be strongly determined by biological interactions and sea conditions, however it has been poorly investigated. We examined the settlement patterns related to relevant biotic and abiotic factors...

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Detalles Bibliográficos
Autores: Cuadros, Amalia, Basterretxea, Gotzon, Cardona Pascual, Luis, Chemineé, Adrien, Hidalgo, Manuel, Moranta, Jordi
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/129877
Acceso en línea:https://hdl.handle.net/2445/129877
Access Level:acceso abierto
Palabra clave:Mediterrània (Mar : nord-oest)
Menorca (Illes Balears)
Ecologia marina
Peixos marins
Mediterranean Sea (northwest)
Minorca (Balearic Islands)
Marine ecology
Marine fishes
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oai_identifier_str oai:diposit.ub.edu:2445/129877
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea
title Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea
spellingShingle Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea
Cuadros, Amalia
Mediterrània (Mar : nord-oest)
Menorca (Illes Balears)
Ecologia marina
Peixos marins
Mediterranean Sea (northwest)
Minorca (Balearic Islands)
Marine ecology
Marine fishes
title_short Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea
title_full Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea
title_fullStr Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea
title_full_unstemmed Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea
title_sort Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea
dc.creator.none.fl_str_mv Cuadros, Amalia
Basterretxea, Gotzon
Cardona Pascual, Luis
Chemineé, Adrien
Hidalgo, Manuel
Moranta, Jordi
author Cuadros, Amalia
author_facet Cuadros, Amalia
Basterretxea, Gotzon
Cardona Pascual, Luis
Chemineé, Adrien
Hidalgo, Manuel
Moranta, Jordi
author_role author
author2 Basterretxea, Gotzon
Cardona Pascual, Luis
Chemineé, Adrien
Hidalgo, Manuel
Moranta, Jordi
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Mediterrània (Mar : nord-oest)
Menorca (Illes Balears)
Ecologia marina
Peixos marins
Mediterranean Sea (northwest)
Minorca (Balearic Islands)
Marine ecology
Marine fishes
topic Mediterrània (Mar : nord-oest)
Menorca (Illes Balears)
Ecologia marina
Peixos marins
Mediterranean Sea (northwest)
Minorca (Balearic Islands)
Marine ecology
Marine fishes
description Survival during the settlement window is a limiting variable for recruitment. The survival is believed to be strongly determined by biological interactions and sea conditions, however it has been poorly investigated. We examined the settlement patterns related to relevant biotic and abiotic factors (i.e. Density-dependence, wind stress, wave height and coastal current velocity) potentially determining post-settler survival rates of a coastal necto-benthic fish of wide distribution in the Mediterranean and eastern Atlantic, the white seabream (Diplodus sargus). An observational study of the demography of juveniles of this species was carried out at six coves in Menorca Island (Balearic Islands, western Mediterranean). Three of the coves were located in the northern and wind exposed coast, at the Northeast (NE) side; while the other three were found along the southern and sheltered coast, at the Southwest (SW) side of the island. The settlement period extended from early May to late June and maximum juvenile densities at the sampling sites varied between 5 and 11 ind. m-1 with maximum values observed in late May simultaneously occurring in the two coasts. Our analysis of juvenile survival, based on the interpretation of the observed patters using an individual based model (IBM), revealed two stages in the size-mortality relationships. An initial density-dependent stage was observed for juveniles up to 20 mm TL, followed by a density independent stage when other factors dominated the survival at sizes > 20 mm TL. No significant environmental effects were observed for the small size class (<20mm TL). Different significant environmental effects affecting NE and SW coves were observed for the medium (20-30mm TL) and large (>30mm TL) size class. In the NE, the wind stress consistently affected the density of fish of 20-30 mm and >30 mm TL with a dome-shape effect with higher densities at intermediate values of wind stress and negative effect at the extremes. The best models applied in the SW coves showed a significant non-linear negative effect on fish density that was also consistent for both groups 20-30 mm and >30 mm TL. Higher densities were observed at low values of wave height in the two groups. Because of these variations, the number of juveniles present at the end of the period was unrelated to their initial density and average survival varied among locations. In consequence, recruitment was (1) primarily limited by denso-dependient procedures at settlement stage, and (2) by sea conditions at post-settlement, where extreme wave conditions depleted juveniles. Accordingly, regional hydrodynamic conditions during the settlement season produced significant impacts on the juvenile densities depending on their size and with contrasted effects in respectto cove orientation. The similar strength in larval supply between coves, in addition to the similar mean phenology for settlers in the north and south of the Island, suggests that all fish may come from the same parental reproductive pool. These factors should be taken into account when assessing relationships between settlers, recruits and adults of white seabream.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/129877
url https://hdl.handle.net/2445/129877
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1371/journal.pone.0190278
PLoS One, 2018, vol. 13, num. 1, p. e0190278
https://doi.org/10.1371/journal.pone.0190278
dc.rights.none.fl_str_mv cc-by (c) Cuadros, Amalia et al., 2018
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Cuadros, Amalia et al., 2018
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Public Library of Science (PLoS)
publisher.none.fl_str_mv Public Library of Science (PLoS)
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean SeaCuadros, AmaliaBasterretxea, GotzonCardona Pascual, LuisChemineé, AdrienHidalgo, ManuelMoranta, JordiMediterrània (Mar : nord-oest)Menorca (Illes Balears)Ecologia marinaPeixos marinsMediterranean Sea (northwest)Minorca (Balearic Islands)Marine ecologyMarine fishesSurvival during the settlement window is a limiting variable for recruitment. The survival is believed to be strongly determined by biological interactions and sea conditions, however it has been poorly investigated. We examined the settlement patterns related to relevant biotic and abiotic factors (i.e. Density-dependence, wind stress, wave height and coastal current velocity) potentially determining post-settler survival rates of a coastal necto-benthic fish of wide distribution in the Mediterranean and eastern Atlantic, the white seabream (Diplodus sargus). An observational study of the demography of juveniles of this species was carried out at six coves in Menorca Island (Balearic Islands, western Mediterranean). Three of the coves were located in the northern and wind exposed coast, at the Northeast (NE) side; while the other three were found along the southern and sheltered coast, at the Southwest (SW) side of the island. The settlement period extended from early May to late June and maximum juvenile densities at the sampling sites varied between 5 and 11 ind. m-1 with maximum values observed in late May simultaneously occurring in the two coasts. Our analysis of juvenile survival, based on the interpretation of the observed patters using an individual based model (IBM), revealed two stages in the size-mortality relationships. An initial density-dependent stage was observed for juveniles up to 20 mm TL, followed by a density independent stage when other factors dominated the survival at sizes > 20 mm TL. No significant environmental effects were observed for the small size class (<20mm TL). Different significant environmental effects affecting NE and SW coves were observed for the medium (20-30mm TL) and large (>30mm TL) size class. In the NE, the wind stress consistently affected the density of fish of 20-30 mm and >30 mm TL with a dome-shape effect with higher densities at intermediate values of wind stress and negative effect at the extremes. The best models applied in the SW coves showed a significant non-linear negative effect on fish density that was also consistent for both groups 20-30 mm and >30 mm TL. Higher densities were observed at low values of wave height in the two groups. Because of these variations, the number of juveniles present at the end of the period was unrelated to their initial density and average survival varied among locations. In consequence, recruitment was (1) primarily limited by denso-dependient procedures at settlement stage, and (2) by sea conditions at post-settlement, where extreme wave conditions depleted juveniles. Accordingly, regional hydrodynamic conditions during the settlement season produced significant impacts on the juvenile densities depending on their size and with contrasted effects in respectto cove orientation. The similar strength in larval supply between coves, in addition to the similar mean phenology for settlers in the north and south of the Island, suggests that all fish may come from the same parental reproductive pool. These factors should be taken into account when assessing relationships between settlers, recruits and adults of white seabream.Public Library of Science (PLoS)2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/129877Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1371/journal.pone.0190278PLoS One, 2018, vol. 13, num. 1, p. e0190278https://doi.org/10.1371/journal.pone.0190278cc-by (c) Cuadros, Amalia et al., 2018http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1298772026-05-27T06:46:51Z
score 15,301603

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