Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1071/MF18352 http://hdl.handle.net/11449/187645 |
Resumo: | Trophic relationships of large pelagic predators can determine the structure and dynamics of oceanic food webs. The feeding habits and trophic ecology of five large pelagic fish (Acanthocybium solandri, Coryphaena hippurus, Elagatis bipinnulata, Thunnus albacares and Thunnus atlanticus) in the Saint Peter and Saint Paul Archipelago were evaluated to determine whether there is a trophic-niche overlap or resource partitioning among them. Eighty prey items found in 1528 stomachs were identified and grouped into Cephalopoda, Cnidaria, Crustacea, Gastropoda, Teleostei and Tunicata. Exocoetidae and Scombridae were the main prey in the diet of Acanthocybium solandri. In C. hippurus, Cheilopogon cyanopterus and Exocoetus volitans were the most important prey items, whereas C. cyanopterus was the main prey for T. albacares. Thunnus atlanticus consumed a great proportion of invertebrate species, with shrimps of Sergestidae family being particularly important. The gastropod Cavolinia sp. was the most important prey for E. bipinnulata. The five species had a high trophic specialisation and a high trophic level (>4.4), whereas most dietary overlaps were consistently low. The most important factor for diet dissimilarity was the consumption of Exocoetidade. All species were classified as top predators with varied diets, indicating their structural and functional importance in the food web of the Archipelago. |
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Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazildietfeeding ecologyniche overlaptrophic levelTrophic relationships of large pelagic predators can determine the structure and dynamics of oceanic food webs. The feeding habits and trophic ecology of five large pelagic fish (Acanthocybium solandri, Coryphaena hippurus, Elagatis bipinnulata, Thunnus albacares and Thunnus atlanticus) in the Saint Peter and Saint Paul Archipelago were evaluated to determine whether there is a trophic-niche overlap or resource partitioning among them. Eighty prey items found in 1528 stomachs were identified and grouped into Cephalopoda, Cnidaria, Crustacea, Gastropoda, Teleostei and Tunicata. Exocoetidae and Scombridae were the main prey in the diet of Acanthocybium solandri. In C. hippurus, Cheilopogon cyanopterus and Exocoetus volitans were the most important prey items, whereas C. cyanopterus was the main prey for T. albacares. Thunnus atlanticus consumed a great proportion of invertebrate species, with shrimps of Sergestidae family being particularly important. The gastropod Cavolinia sp. was the most important prey for E. bipinnulata. The five species had a high trophic specialisation and a high trophic level (>4.4), whereas most dietary overlaps were consistently low. The most important factor for diet dissimilarity was the consumption of Exocoetidade. All species were classified as top predators with varied diets, indicating their structural and functional importance in the food web of the Archipelago.Laboratório de Oceanografia Pesqueira Universidade Federal Rural de Pernambuco, Rua Dom Manuel de Medeiros, s/nFundación Colombiana Para la Investigación y Conservación de Tiburones y Rayas SQUALUS, Calle 10a 72-35Laboratório de Elasmobrânquios e Nécton Marinho Universidade Estadual Paulista-UNESP/CLP, Praça Infante Dom Henrique, s/nLaboratório de Elasmobrânquios e Nécton Marinho Universidade Estadual Paulista-UNESP/CLP, Praça Infante Dom Henrique, s/nUniversidade Federal Rural de PernambucoSQUALUSUniversidade Estadual Paulista (Unesp)Albuquerque, F. V.Navia, A. F.Vaske, T. [UNESP]Crespo, O.Hazin, F. H.V.2019-10-06T15:42:47Z2019-10-06T15:42:47Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1071/MF18352Marine and Freshwater Research.1323-1650http://hdl.handle.net/11449/18764510.1071/MF183522-s2.0-85065477773Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMarine and Freshwater Researchinfo:eu-repo/semantics/openAccess2021-10-23T04:16:40Zoai:repositorio.unesp.br:11449/187645Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:27:35.469167Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil |
title |
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil |
spellingShingle |
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil Albuquerque, F. V. diet feeding ecology niche overlap trophic level |
title_short |
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil |
title_full |
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil |
title_fullStr |
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil |
title_full_unstemmed |
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil |
title_sort |
Trophic ecology of large pelagic fish in the Saint Peter and Saint Paul Archipelago, Brazil |
author |
Albuquerque, F. V. |
author_facet |
Albuquerque, F. V. Navia, A. F. Vaske, T. [UNESP] Crespo, O. Hazin, F. H.V. |
author_role |
author |
author2 |
Navia, A. F. Vaske, T. [UNESP] Crespo, O. Hazin, F. H.V. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal Rural de Pernambuco SQUALUS Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Albuquerque, F. V. Navia, A. F. Vaske, T. [UNESP] Crespo, O. Hazin, F. H.V. |
dc.subject.por.fl_str_mv |
diet feeding ecology niche overlap trophic level |
topic |
diet feeding ecology niche overlap trophic level |
description |
Trophic relationships of large pelagic predators can determine the structure and dynamics of oceanic food webs. The feeding habits and trophic ecology of five large pelagic fish (Acanthocybium solandri, Coryphaena hippurus, Elagatis bipinnulata, Thunnus albacares and Thunnus atlanticus) in the Saint Peter and Saint Paul Archipelago were evaluated to determine whether there is a trophic-niche overlap or resource partitioning among them. Eighty prey items found in 1528 stomachs were identified and grouped into Cephalopoda, Cnidaria, Crustacea, Gastropoda, Teleostei and Tunicata. Exocoetidae and Scombridae were the main prey in the diet of Acanthocybium solandri. In C. hippurus, Cheilopogon cyanopterus and Exocoetus volitans were the most important prey items, whereas C. cyanopterus was the main prey for T. albacares. Thunnus atlanticus consumed a great proportion of invertebrate species, with shrimps of Sergestidae family being particularly important. The gastropod Cavolinia sp. was the most important prey for E. bipinnulata. The five species had a high trophic specialisation and a high trophic level (>4.4), whereas most dietary overlaps were consistently low. The most important factor for diet dissimilarity was the consumption of Exocoetidade. All species were classified as top predators with varied diets, indicating their structural and functional importance in the food web of the Archipelago. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T15:42:47Z 2019-10-06T15:42:47Z 2019-01-01 |
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://dx.doi.org/10.1071/MF18352 Marine and Freshwater Research. 1323-1650 http://hdl.handle.net/11449/187645 10.1071/MF18352 2-s2.0-85065477773 |
url |
http://dx.doi.org/10.1071/MF18352 http://hdl.handle.net/11449/187645 |
identifier_str_mv |
Marine and Freshwater Research. 1323-1650 10.1071/MF18352 2-s2.0-85065477773 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Marine and Freshwater Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128655435497472 |