Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa

Detalhes bibliográficos
Autor(a) principal: Maggs, Christine A.
Data de Publicação: 2008
Outros Autores: Castilho, Rita, Foltz, David, Henzler, Christy, Jolly, Marc Taimour, Kelly, John, Olsen, Jeanine, Perez, Kathryn E., Stam, Wytze, Vainola, Risto, Viard, Frederique, Wares, John
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/11808
Resumo: A goal of phylogeography is to relate patterns of genetic differentiation to potential historical geographic isolating events. Quaternary glaciations, particularly the one culminating in the Last Glacial Maximum similar to 21 ka (thousands of years ago), greatly affected the distributions and population sizes of temperate marine species as their ranges retreated southward to escape ice sheets. Traditional genetic models of glacial refugia and routes of recolonization include these predictions: low genetic diversity in formerly glaciated areas, with a small number of alleles/haplotypes dominating disproportionately large areas, and high diversity including "private'' alleles in glacial refugia. In the Northern Hemisphere, low diversity in the north and high diversity in the south are expected. This simple model does not account for the possibility of populations surviving in relatively small northern periglacial refugia. If these periglacial populations experienced extreme bottlenecks, they could have the low genetic diversity expected in recolonized areas with no refugia, but should have more endemic diversity (private alleles) than recently recolonized areas. This review examines evidence of putative glacial refugia for eight benthic marine taxa in the temperate North Atlantic. All data sets were reanalyzed to allow direct comparisons between geographic patterns of genetic diversity and distribution of particular clades and haplotypes including private alleles. We contend that for marine organisms the genetic signatures of northern periglacial and southern refugia can be distinguished from one another. There is evidence for several periglacial refugia in northern latitudes, giving credence to recent climatic reconstructions with less extensive glaciation.
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spelling Evaluating signatures of glacial refugia for North Atlantic benthic marine taxaSea-level changeMitochondrial-DnaClimate-changeComparative phylogeographyReproductive isolationPopulation-structureGenetic diversitySt-lawrenceIce-agePostglacial colonizationA goal of phylogeography is to relate patterns of genetic differentiation to potential historical geographic isolating events. Quaternary glaciations, particularly the one culminating in the Last Glacial Maximum similar to 21 ka (thousands of years ago), greatly affected the distributions and population sizes of temperate marine species as their ranges retreated southward to escape ice sheets. Traditional genetic models of glacial refugia and routes of recolonization include these predictions: low genetic diversity in formerly glaciated areas, with a small number of alleles/haplotypes dominating disproportionately large areas, and high diversity including "private'' alleles in glacial refugia. In the Northern Hemisphere, low diversity in the north and high diversity in the south are expected. This simple model does not account for the possibility of populations surviving in relatively small northern periglacial refugia. If these periglacial populations experienced extreme bottlenecks, they could have the low genetic diversity expected in recolonized areas with no refugia, but should have more endemic diversity (private alleles) than recently recolonized areas. This review examines evidence of putative glacial refugia for eight benthic marine taxa in the temperate North Atlantic. All data sets were reanalyzed to allow direct comparisons between geographic patterns of genetic diversity and distribution of particular clades and haplotypes including private alleles. We contend that for marine organisms the genetic signatures of northern periglacial and southern refugia can be distinguished from one another. There is evidence for several periglacial refugia in northern latitudes, giving credence to recent climatic reconstructions with less extensive glaciation.NSF; Marbef [GOCE-CT-2003-505446]; Intra-European Marie Curie Fellowship [EIF-024781]; 6th European Community Framework ProgramEcological Soc AmerSapientiaMaggs, Christine A.Castilho, RitaFoltz, DavidHenzler, ChristyJolly, Marc TaimourKelly, JohnOlsen, JeaninePerez, Kathryn E.Stam, WytzeVainola, RistoViard, FrederiqueWares, John2018-12-07T14:58:00Z2008-112008-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/11808eng0012-965810.1890/08-0257.1info: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:RCAAP2023-07-24T10:23:40Zoai:sapientia.ualg.pt:10400.1/11808Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:03:15.627397Repositório 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 Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa
title Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa
spellingShingle Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa
Maggs, Christine A.
Sea-level change
Mitochondrial-Dna
Climate-change
Comparative phylogeography
Reproductive isolation
Population-structure
Genetic diversity
St-lawrence
Ice-age
Postglacial colonization
title_short Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa
title_full Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa
title_fullStr Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa
title_full_unstemmed Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa
title_sort Evaluating signatures of glacial refugia for North Atlantic benthic marine taxa
author Maggs, Christine A.
author_facet Maggs, Christine A.
Castilho, Rita
Foltz, David
Henzler, Christy
Jolly, Marc Taimour
Kelly, John
Olsen, Jeanine
Perez, Kathryn E.
Stam, Wytze
Vainola, Risto
Viard, Frederique
Wares, John
author_role author
author2 Castilho, Rita
Foltz, David
Henzler, Christy
Jolly, Marc Taimour
Kelly, John
Olsen, Jeanine
Perez, Kathryn E.
Stam, Wytze
Vainola, Risto
Viard, Frederique
Wares, John
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Maggs, Christine A.
Castilho, Rita
Foltz, David
Henzler, Christy
Jolly, Marc Taimour
Kelly, John
Olsen, Jeanine
Perez, Kathryn E.
Stam, Wytze
Vainola, Risto
Viard, Frederique
Wares, John
dc.subject.por.fl_str_mv Sea-level change
Mitochondrial-Dna
Climate-change
Comparative phylogeography
Reproductive isolation
Population-structure
Genetic diversity
St-lawrence
Ice-age
Postglacial colonization
topic Sea-level change
Mitochondrial-Dna
Climate-change
Comparative phylogeography
Reproductive isolation
Population-structure
Genetic diversity
St-lawrence
Ice-age
Postglacial colonization
description A goal of phylogeography is to relate patterns of genetic differentiation to potential historical geographic isolating events. Quaternary glaciations, particularly the one culminating in the Last Glacial Maximum similar to 21 ka (thousands of years ago), greatly affected the distributions and population sizes of temperate marine species as their ranges retreated southward to escape ice sheets. Traditional genetic models of glacial refugia and routes of recolonization include these predictions: low genetic diversity in formerly glaciated areas, with a small number of alleles/haplotypes dominating disproportionately large areas, and high diversity including "private'' alleles in glacial refugia. In the Northern Hemisphere, low diversity in the north and high diversity in the south are expected. This simple model does not account for the possibility of populations surviving in relatively small northern periglacial refugia. If these periglacial populations experienced extreme bottlenecks, they could have the low genetic diversity expected in recolonized areas with no refugia, but should have more endemic diversity (private alleles) than recently recolonized areas. This review examines evidence of putative glacial refugia for eight benthic marine taxa in the temperate North Atlantic. All data sets were reanalyzed to allow direct comparisons between geographic patterns of genetic diversity and distribution of particular clades and haplotypes including private alleles. We contend that for marine organisms the genetic signatures of northern periglacial and southern refugia can be distinguished from one another. There is evidence for several periglacial refugia in northern latitudes, giving credence to recent climatic reconstructions with less extensive glaciation.
publishDate 2008
dc.date.none.fl_str_mv 2008-11
2008-11-01T00:00:00Z
2018-12-07T14:58:00Z
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://hdl.handle.net/10400.1/11808
url http://hdl.handle.net/10400.1/11808
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0012-9658
10.1890/08-0257.1
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Ecological Soc Amer
publisher.none.fl_str_mv Ecological Soc Amer
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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