Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.fishres.2022.106357 http://hdl.handle.net/11449/240940 |
Resumo: | Phenotypic variation of Scomberomorus brasiliensis otoliths was evaluated by testing the null hypothesis of a single stock across the southwestern Atlantic Ocean. Otolith sampling of S. brasiliensis (n = 396) took place between July and October 2019 at nine locations along the Brazilian coast. The shape of each otolith contour was assessed with elliptic Fourier descriptors (EFDs) and their variation evaluated through multivariate analyses. Fish size-otolith size relationships were used to explore interregional differences in S. brasiliensis growth. Cluster analysis based on EFDs separated the sampling locations into tropical (2°S to 20°S) and subtropical (23°S to 27°S) Atlantic regions. The variation of EFDs between these regions was over twice as large as the within region variation. Linear discriminant analysis (LDA) discriminated between regions with 72.85% overall accuracy. Subtropical fish were characterized by the lowest otolith mass at fish size, suggesting great conditions for the growth of S. brasiliensis in subtropical waters. Local phenotypic structuring among S. brasiliensis population units was less evident (LDA, 29.6% overall accuracy), most likely due to high demographic connectivity on short spatial scales, or even, small environmental heterogeneity to promote discrete phenotypic in S. brasiliensis otoliths. Yet, EFDs from distant population units (2°S and 23–27°S) were statistically similar and a likelihood of extensive longshore migration could not be excluded with the herein used approach. These results suggest, however, regional population units appear not regularly mix and fishery managers need to consider such Atlantic regions as functionally distinct management units in a metapopulation perspective. |
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Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic OceanBrazilian coastElliptic Fourier analysisFisheries managementPhenotypic stocksThermal gradientPhenotypic variation of Scomberomorus brasiliensis otoliths was evaluated by testing the null hypothesis of a single stock across the southwestern Atlantic Ocean. Otolith sampling of S. brasiliensis (n = 396) took place between July and October 2019 at nine locations along the Brazilian coast. The shape of each otolith contour was assessed with elliptic Fourier descriptors (EFDs) and their variation evaluated through multivariate analyses. Fish size-otolith size relationships were used to explore interregional differences in S. brasiliensis growth. Cluster analysis based on EFDs separated the sampling locations into tropical (2°S to 20°S) and subtropical (23°S to 27°S) Atlantic regions. The variation of EFDs between these regions was over twice as large as the within region variation. Linear discriminant analysis (LDA) discriminated between regions with 72.85% overall accuracy. Subtropical fish were characterized by the lowest otolith mass at fish size, suggesting great conditions for the growth of S. brasiliensis in subtropical waters. Local phenotypic structuring among S. brasiliensis population units was less evident (LDA, 29.6% overall accuracy), most likely due to high demographic connectivity on short spatial scales, or even, small environmental heterogeneity to promote discrete phenotypic in S. brasiliensis otoliths. Yet, EFDs from distant population units (2°S and 23–27°S) were statistically similar and a likelihood of extensive longshore migration could not be excluded with the herein used approach. These results suggest, however, regional population units appear not regularly mix and fishery managers need to consider such Atlantic regions as functionally distinct management units in a metapopulation perspective.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Programa de Pós-Graduação em Sistemas Costeiros e Oceânicos Universidade Federal do Paraná, P.O 61, PRCentro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/NUniversidade Estadual Paulista Julio de Mesquita Filho UNESP Registro, SPFaculdade de Ciências da Saúde da Universidade Fernando Pessoa, Rua Carlos Maia 296Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS-UP), Rua de Jorge Viterbo Ferreira 228Laboratory of Ecology Fish and Fisheries Institute of Biological and Health Sciences Federal University of Alagoas, AlagoasLaboratório de Dinâmica Populacional e Ecologia de Peixes Marinhos Instituto de Ciências do Mar Universidade Federal do Ceará, CearáInstituto Federal de Alagoas Campus Penedo, AlagoasUniversidade Estadual Paulista Julio de Mesquita Filho UNESP Registro, SPCAPES: 88887.357807/2019-00Universidade Federal do Paraná (UFPR)Centro Interdisciplinar de Investigação Marinha e AmbientalUniversidade Estadual Paulista (UNESP)Faculdade de Ciências da Saúde da Universidade Fernando PessoaInstituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS-UP)Federal University of AlagoasUniversidade Federal do CearáInstituto Federal de AlagoasSoeth, MarceloDaros, Felippe Alexandre [UNESP]Correia, Alberto TeodoricoFabré, Nidia NoemiMedeiros, ReginaldoFeitosa, Caroline VieiraDuarte, Oscar de SousaLenz, Tiago MoraesSpach, Henry Louis2023-03-01T20:39:38Z2023-03-01T20:39:38Z2022-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.fishres.2022.106357Fisheries Research, v. 252.0165-7836http://hdl.handle.net/11449/24094010.1016/j.fishres.2022.1063572-s2.0-85129468565Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFisheries Researchinfo:eu-repo/semantics/openAccess2024-05-03T13:20:52Zoai:repositorio.unesp.br:11449/240940Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:38:47.032997Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean |
title |
Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean |
spellingShingle |
Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean Soeth, Marcelo Brazilian coast Elliptic Fourier analysis Fisheries management Phenotypic stocks Thermal gradient |
title_short |
Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean |
title_full |
Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean |
title_fullStr |
Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean |
title_full_unstemmed |
Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean |
title_sort |
Otolith phenotypic variation as an indicator of stock structure of Scomberomorus brasiliensis from the southwestern Atlantic Ocean |
author |
Soeth, Marcelo |
author_facet |
Soeth, Marcelo Daros, Felippe Alexandre [UNESP] Correia, Alberto Teodorico Fabré, Nidia Noemi Medeiros, Reginaldo Feitosa, Caroline Vieira Duarte, Oscar de Sousa Lenz, Tiago Moraes Spach, Henry Louis |
author_role |
author |
author2 |
Daros, Felippe Alexandre [UNESP] Correia, Alberto Teodorico Fabré, Nidia Noemi Medeiros, Reginaldo Feitosa, Caroline Vieira Duarte, Oscar de Sousa Lenz, Tiago Moraes Spach, Henry Louis |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal do Paraná (UFPR) Centro Interdisciplinar de Investigação Marinha e Ambiental Universidade Estadual Paulista (UNESP) Faculdade de Ciências da Saúde da Universidade Fernando Pessoa Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS-UP) Federal University of Alagoas Universidade Federal do Ceará Instituto Federal de Alagoas |
dc.contributor.author.fl_str_mv |
Soeth, Marcelo Daros, Felippe Alexandre [UNESP] Correia, Alberto Teodorico Fabré, Nidia Noemi Medeiros, Reginaldo Feitosa, Caroline Vieira Duarte, Oscar de Sousa Lenz, Tiago Moraes Spach, Henry Louis |
dc.subject.por.fl_str_mv |
Brazilian coast Elliptic Fourier analysis Fisheries management Phenotypic stocks Thermal gradient |
topic |
Brazilian coast Elliptic Fourier analysis Fisheries management Phenotypic stocks Thermal gradient |
description |
Phenotypic variation of Scomberomorus brasiliensis otoliths was evaluated by testing the null hypothesis of a single stock across the southwestern Atlantic Ocean. Otolith sampling of S. brasiliensis (n = 396) took place between July and October 2019 at nine locations along the Brazilian coast. The shape of each otolith contour was assessed with elliptic Fourier descriptors (EFDs) and their variation evaluated through multivariate analyses. Fish size-otolith size relationships were used to explore interregional differences in S. brasiliensis growth. Cluster analysis based on EFDs separated the sampling locations into tropical (2°S to 20°S) and subtropical (23°S to 27°S) Atlantic regions. The variation of EFDs between these regions was over twice as large as the within region variation. Linear discriminant analysis (LDA) discriminated between regions with 72.85% overall accuracy. Subtropical fish were characterized by the lowest otolith mass at fish size, suggesting great conditions for the growth of S. brasiliensis in subtropical waters. Local phenotypic structuring among S. brasiliensis population units was less evident (LDA, 29.6% overall accuracy), most likely due to high demographic connectivity on short spatial scales, or even, small environmental heterogeneity to promote discrete phenotypic in S. brasiliensis otoliths. Yet, EFDs from distant population units (2°S and 23–27°S) were statistically similar and a likelihood of extensive longshore migration could not be excluded with the herein used approach. These results suggest, however, regional population units appear not regularly mix and fishery managers need to consider such Atlantic regions as functionally distinct management units in a metapopulation perspective. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-08-01 2023-03-01T20:39:38Z 2023-03-01T20:39:38Z |
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/10.1016/j.fishres.2022.106357 Fisheries Research, v. 252. 0165-7836 http://hdl.handle.net/11449/240940 10.1016/j.fishres.2022.106357 2-s2.0-85129468565 |
url |
http://dx.doi.org/10.1016/j.fishres.2022.106357 http://hdl.handle.net/11449/240940 |
identifier_str_mv |
Fisheries Research, v. 252. 0165-7836 10.1016/j.fishres.2022.106357 2-s2.0-85129468565 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Fisheries 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 |
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1808129446582943744 |