Reduced global genetic differentiation of exploited marine fish species

Detalhes bibliográficos
Autor(a) principal: Gandra, Miguel
Data de Publicação: 2021
Outros Autores: Assis, Jorge, Ramos Martins, Manuel, Abecasis, David
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/16329
Resumo: Knowledge on genetic structure is key to understand species connectivity patterns and to define the spatiotemporal scales over which conservation management plans should be designed and implemented. The distribution of genetic diversity (within and among populations) greatly influences species ability to cope and adapt to environmental changes, ultimately determining their long-term resilience to ecological disturbances. Yet, the drivers shaping connectivity and structure in marine fish populations remain elusive, as are the effects of fishing activities on genetic subdivision. To investigate these questions, we conducted a meta-analysis and compiled genetic differentiation data (FST/ΦST estimates) for more than 170 fish species from over 200 published studies globally distributed. We modeled the effects of multiple life-history traits, distance metrics, and methodological factors on observed population differentiation indices and specifically tested whether any signal arising from different exposure to fishing exploitation could be detected. Although the myriad of variables shaping genetic structure makes it challenging to isolate the influence of single drivers, results showed a significant correlation between commercial importance and genetic structure, with widespread lower population differentiation in commercially exploited species. Moreover, models indicate that variables commonly used as proxy for connectivity, such as larval pelagic duration, might be insufficient, and suggest that deep-sea species may disperse further. Overall, these results contribute to the growing body of knowledge on marine genetic connectivity and suggest a potential effect of commercial fisheries on the homogenization of genetic diversity, highlighting the need for additional research focused on dispersal ecology to ensure long-term sustainability of exploited marine species.
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spelling Reduced global genetic differentiation of exploited marine fish speciesPhylogeographyConnectivityDispersalFisheriesF-STKnowledge on genetic structure is key to understand species connectivity patterns and to define the spatiotemporal scales over which conservation management plans should be designed and implemented. The distribution of genetic diversity (within and among populations) greatly influences species ability to cope and adapt to environmental changes, ultimately determining their long-term resilience to ecological disturbances. Yet, the drivers shaping connectivity and structure in marine fish populations remain elusive, as are the effects of fishing activities on genetic subdivision. To investigate these questions, we conducted a meta-analysis and compiled genetic differentiation data (FST/ΦST estimates) for more than 170 fish species from over 200 published studies globally distributed. We modeled the effects of multiple life-history traits, distance metrics, and methodological factors on observed population differentiation indices and specifically tested whether any signal arising from different exposure to fishing exploitation could be detected. Although the myriad of variables shaping genetic structure makes it challenging to isolate the influence of single drivers, results showed a significant correlation between commercial importance and genetic structure, with widespread lower population differentiation in commercially exploited species. Moreover, models indicate that variables commonly used as proxy for connectivity, such as larval pelagic duration, might be insufficient, and suggest that deep-sea species may disperse further. Overall, these results contribute to the growing body of knowledge on marine genetic connectivity and suggest a potential effect of commercial fisheries on the homogenization of genetic diversity, highlighting the need for additional research focused on dispersal ecology to ensure long-term sustainability of exploited marine species.MAR-01.04.02-FEAMP-0015, UIDB/04326/2020, PTDC/BIA-CBI/6515/2020, DL57/2016/CP1361/CT0035, DL 57/2016/CP1361/CT0036Oxford university pressSapientiaGandra, MiguelAssis, JorgeRamos Martins, ManuelAbecasis, David2021-06-21T15:44:54Z2021-042021-04-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/16329eng10.1093/molbev/msaa2991537-1719info: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:RCAAP2023-07-24T10:28:05Zoai:sapientia.ualg.pt:10400.1/16329Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:06:28.130006Repositório 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 Reduced global genetic differentiation of exploited marine fish species
title Reduced global genetic differentiation of exploited marine fish species
spellingShingle Reduced global genetic differentiation of exploited marine fish species
Gandra, Miguel
Phylogeography
Connectivity
Dispersal
Fisheries
F-ST
title_short Reduced global genetic differentiation of exploited marine fish species
title_full Reduced global genetic differentiation of exploited marine fish species
title_fullStr Reduced global genetic differentiation of exploited marine fish species
title_full_unstemmed Reduced global genetic differentiation of exploited marine fish species
title_sort Reduced global genetic differentiation of exploited marine fish species
author Gandra, Miguel
author_facet Gandra, Miguel
Assis, Jorge
Ramos Martins, Manuel
Abecasis, David
author_role author
author2 Assis, Jorge
Ramos Martins, Manuel
Abecasis, David
author2_role author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Gandra, Miguel
Assis, Jorge
Ramos Martins, Manuel
Abecasis, David
dc.subject.por.fl_str_mv Phylogeography
Connectivity
Dispersal
Fisheries
F-ST
topic Phylogeography
Connectivity
Dispersal
Fisheries
F-ST
description Knowledge on genetic structure is key to understand species connectivity patterns and to define the spatiotemporal scales over which conservation management plans should be designed and implemented. The distribution of genetic diversity (within and among populations) greatly influences species ability to cope and adapt to environmental changes, ultimately determining their long-term resilience to ecological disturbances. Yet, the drivers shaping connectivity and structure in marine fish populations remain elusive, as are the effects of fishing activities on genetic subdivision. To investigate these questions, we conducted a meta-analysis and compiled genetic differentiation data (FST/ΦST estimates) for more than 170 fish species from over 200 published studies globally distributed. We modeled the effects of multiple life-history traits, distance metrics, and methodological factors on observed population differentiation indices and specifically tested whether any signal arising from different exposure to fishing exploitation could be detected. Although the myriad of variables shaping genetic structure makes it challenging to isolate the influence of single drivers, results showed a significant correlation between commercial importance and genetic structure, with widespread lower population differentiation in commercially exploited species. Moreover, models indicate that variables commonly used as proxy for connectivity, such as larval pelagic duration, might be insufficient, and suggest that deep-sea species may disperse further. Overall, these results contribute to the growing body of knowledge on marine genetic connectivity and suggest a potential effect of commercial fisheries on the homogenization of genetic diversity, highlighting the need for additional research focused on dispersal ecology to ensure long-term sustainability of exploited marine species.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-21T15:44:54Z
2021-04
2021-04-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/16329
url http://hdl.handle.net/10400.1/16329
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1093/molbev/msaa299
1537-1719
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dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Oxford university press
publisher.none.fl_str_mv Oxford university press
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
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