Deep-water fish assemblages in the Mediterranean Sea

[EN] Data collected during the DESEAS survey carried out in three areas of the Mediterranean Sea (Balearic Sea, western and eastern Ionian Sea) were used to describe the structure and spatial distribution of the fish assemblages at depths between 600 and 4000 m. A total of 55 species (8 chondrichthy...

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Detalhes bibliográficos
Autores: D´Onghia, Gianfranco, Politou, Chrissi-Yianna, Bozzano, Anna, Lloris, Domingo, Rotllant, Guiomar, Sion, Letizia, Mastrototaro, Francesco
Formato: artículo
Fecha de publicación:2004
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/5545
Acesso em linha:http://hdl.handle.net/10261/5545
Access Level:acceso abierto
Palavra-chave:Fishes
Distribution
Deep-sea
Biodiversity
Fish assemblages
Mediterranean Sea
Peces
Distribución
Mar profundo
Biodiversidad
Asociaciones de peces
Mediterráneo
id ES_4ff8bf1c4827f4b53e1b0d7e89e0c07d
oai_identifier_str oai:digital.csic.es:10261/5545
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Deep-water fish assemblages in the Mediterranean Sea
Asociaciones de peces profundos en el Mediterráneo
title Deep-water fish assemblages in the Mediterranean Sea
spellingShingle Deep-water fish assemblages in the Mediterranean Sea
D´Onghia, Gianfranco
Fishes
Distribution
Deep-sea
Biodiversity
Fish assemblages
Mediterranean Sea
Peces
Distribución
Mar profundo
Biodiversidad
Asociaciones de peces
Mediterráneo
title_short Deep-water fish assemblages in the Mediterranean Sea
title_full Deep-water fish assemblages in the Mediterranean Sea
title_fullStr Deep-water fish assemblages in the Mediterranean Sea
title_full_unstemmed Deep-water fish assemblages in the Mediterranean Sea
title_sort Deep-water fish assemblages in the Mediterranean Sea
dc.creator.none.fl_str_mv D´Onghia, Gianfranco
Politou, Chrissi-Yianna
Bozzano, Anna
Lloris, Domingo
Rotllant, Guiomar
Sion, Letizia
Mastrototaro, Francesco
author D´Onghia, Gianfranco
author_facet D´Onghia, Gianfranco
Politou, Chrissi-Yianna
Bozzano, Anna
Lloris, Domingo
Rotllant, Guiomar
Sion, Letizia
Mastrototaro, Francesco
author_role author
author2 Politou, Chrissi-Yianna
Bozzano, Anna
Lloris, Domingo
Rotllant, Guiomar
Sion, Letizia
Mastrototaro, Francesco
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Fishes
Distribution
Deep-sea
Biodiversity
Fish assemblages
Mediterranean Sea
Peces
Distribución
Mar profundo
Biodiversidad
Asociaciones de peces
Mediterráneo
topic Fishes
Distribution
Deep-sea
Biodiversity
Fish assemblages
Mediterranean Sea
Peces
Distribución
Mar profundo
Biodiversidad
Asociaciones de peces
Mediterráneo
description [EN] Data collected during the DESEAS survey carried out in three areas of the Mediterranean Sea (Balearic Sea, western and eastern Ionian Sea) were used to describe the structure and spatial distribution of the fish assemblages at depths between 600 and 4000 m. A total of 55 species (8 chondrichthyes and 47 teleost fish) were sampled, 38 of them in the Balearic Sea, 30 in the western Ionian and 37 in the eastern Ionian. Multivariate analysis showed a clear pattern of zonation with depth and geographic area. Three main assemblages were identified across the vertical gradient investigated: on the upper slope around a depth of 600 m, on the middle slope between 800 and 1300 m, and on the lower slope below 1300 m. The geographic characterisation of the ichthyofauna structure was mainly observed on the upper and middle slope. The highest abundance and biomass values were found at depths of 1000-1200 m due to the presence of larger species with high energy requirements, such as Alepocephalusrostratus, Mora moro and Galeus melastomus. On the middle slope, significant differences in the abundance, biomass and mean fish weight were detected between the three areas. Significant differences for these parameters were also shown between the middle and lower slope assemblages. A significant decrease in species richness and diversity was shown with increasing depth, indicating an impoverishment of the megafauna with depth and a higher similarity between the Balearic Sea and the Ionian Sea with regard to the greatest depths. The dominant species on the deepest bottoms were Bathypteroismediterraneus, Chalinura mediterranea and Coryphaenoides guentheri. On the lower slope, the shark Centroscymnuscoelolepis was also found to be relatively abundant off the Balearic Islands, Etmopterusspinax in the eastern Ionian Sea and the teleost fish Cataetyx laticeps throughout the three study areas. The deepest bottoms of the Mediterranean Sea shelter an ichthyofauna dominated by small-medium species living in a food scarce environment in which some large mobile fishes are widespread. The results are discussed in relation to previous studies mostly carried out in the Atlantic and western Mediterranean
publishDate 2004
dc.date.none.fl_str_mv 2004
2008
2008
dc.type.none.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/5545
url http://hdl.handle.net/10261/5545
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3989/scimar.2004.68s387
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv CSIC - Instituto de Ciencias del Mar (ICM)
publisher.none.fl_str_mv CSIC - Instituto de Ciencias del Mar (ICM)
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
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spelling Deep-water fish assemblages in the Mediterranean SeaAsociaciones de peces profundos en el MediterráneoD´Onghia, GianfrancoPolitou, Chrissi-YiannaBozzano, AnnaLloris, DomingoRotllant, GuiomarSion, LetiziaMastrototaro, FrancescoFishesDistributionDeep-seaBiodiversityFish assemblagesMediterranean SeaPecesDistribuciónMar profundoBiodiversidadAsociaciones de pecesMediterráneo[EN] Data collected during the DESEAS survey carried out in three areas of the Mediterranean Sea (Balearic Sea, western and eastern Ionian Sea) were used to describe the structure and spatial distribution of the fish assemblages at depths between 600 and 4000 m. A total of 55 species (8 chondrichthyes and 47 teleost fish) were sampled, 38 of them in the Balearic Sea, 30 in the western Ionian and 37 in the eastern Ionian. Multivariate analysis showed a clear pattern of zonation with depth and geographic area. Three main assemblages were identified across the vertical gradient investigated: on the upper slope around a depth of 600 m, on the middle slope between 800 and 1300 m, and on the lower slope below 1300 m. The geographic characterisation of the ichthyofauna structure was mainly observed on the upper and middle slope. The highest abundance and biomass values were found at depths of 1000-1200 m due to the presence of larger species with high energy requirements, such as Alepocephalusrostratus, Mora moro and Galeus melastomus. On the middle slope, significant differences in the abundance, biomass and mean fish weight were detected between the three areas. Significant differences for these parameters were also shown between the middle and lower slope assemblages. A significant decrease in species richness and diversity was shown with increasing depth, indicating an impoverishment of the megafauna with depth and a higher similarity between the Balearic Sea and the Ionian Sea with regard to the greatest depths. The dominant species on the deepest bottoms were Bathypteroismediterraneus, Chalinura mediterranea and Coryphaenoides guentheri. On the lower slope, the shark Centroscymnuscoelolepis was also found to be relatively abundant off the Balearic Islands, Etmopterusspinax in the eastern Ionian Sea and the teleost fish Cataetyx laticeps throughout the three study areas. The deepest bottoms of the Mediterranean Sea shelter an ichthyofauna dominated by small-medium species living in a food scarce environment in which some large mobile fishes are widespread. The results are discussed in relation to previous studies mostly carried out in the Atlantic and western Mediterranean[ES] A partir de datos recolectados durante la campaña DESEAS, llevada a cabo en tres áreas del mar Mediterráneo (Mar Balear y Iónico occidental y oriental), se describe la estructura y la distribución espacial de las asociaciones de peces entre 600 y 4000 m de profundidad. Se obtuvieron un total de 55 especies (8 condrictrios y 47 peces teleósteos), 38 de los cuales procedían del mar Balear, 30 del Iónico occidental y 37 del oriental. El análisis multivariante de los datos nos muestra un claro patrón en zonación tanto en profundidad como por área geográfica. Se identificaron tres asociaciones principales a través del gradiente batimétrico estudiado: en el talud superior a profundidades alrededor de los 600 m, en el talud medio entre 800 y 1300 m, y en el talud inferior por debajo de los 1300 m. La caracterización geográfica de la estructura de la ictiofauna se observó principalmente en el talud superior y medio. A profundidades comprendidas entre 1000 y 1200 m fue donde se encontraron los mayores valores de biomasa, debido a la presencia de especies más grandes y con mayores requerimientos energéticos como Alepocephalus rostratus, Mora moro y Galeus melastomus. En el talud medio se detectaron diferencias significativas en abundancia, biomasa y peso medio de los peces entre las tres áreas. También se encontraron en las asociaciones de peces diferencias significativas en estos parámetros en el talud superior e inferior. Con el aumento de profundidad se detecta una disminución de la riqueza específica y la diversidad, indicando un empobrecimiento de la magafauna con la profundidad. Sin embargo se observa alta similaridad entre las áreas de estudio y en las máximas profundidades alcanzadas. Las especies dominantes en los fondos más profundos fueron: Bathypterois mediterraneus, Chalinura mediterranea y Coryphaenoides guentheri. En el talud inferior del mar Balear, el tiburón Centroscymnus coelolepis fue también relativamente abundante. Etmopterus spinax en el Iónico oriental y el teleosteo Cataetyx laticeps en las tres áreas de estudio. Los fondos más profundos del Mediterráneo son refugio para una ictiofauna dominada por pequeñas y medianas especies que habitan en en un ambiente escaso de alimento, en el cual solo algunos grandes peces móviles pueden extenderse. Los resultados se discuten en relación a estudios previos llevados a cabo mayoritariamente en el Atlántico y Mediterráneo occidentalThis work was supported by the Directorate General of Fisheries of the European Commission as part of the project DESEAS (Exploratory survey to collect data of the exploited and virgin stocks of deep-sea shrimp A. antennatus, of interest to the CFP - Study Contract nº 2000/39, DGXIV)Peer reviewedCSIC - Instituto de Ciencias del Mar (ICM)200820082004info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_65011410414 bytesapplication/pdfhttp://hdl.handle.net/10261/5545reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3989/scimar.2004.68s387info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/55452026-05-22T06:33:51Z
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