Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1371/journal.pone.0166518 http://hdl.handle.net/11449/169152 |
Resumo: | Fiddler crabs (Brachyura, Ocypodidae), like many other marine organisms, disperse via planktonic larvae. A lengthy pelagic larval duration is generally assumed to result in genetic connectivity even among distant populations. However, major river outflows, such as of the Amazon or Orinoco, or strong currents may act as phylogeographic barriers to ongoing gene flow. For example, the Mona Passage, located between Puerto Rico and Hispaniola, has been postulated to impair larval exchange of several species. In this study, Cox1 mtDNA data was used to analyze population genetic structure of two fiddler crab species from the western Atlantic, comparing the continental coastline and Caribbean islands. The results indicate genetic homogeneity in Minuca rapax among Atlantic (continental) populations (Suriname, Brazil), whereas Caribbean populations show significantly restricted gene flow among the constituent islands and towards continental populations. Our data support the hypothesis of the Mona Passage hindering larval exchange. Contrastingly, Caribbean Leptuca leptodactyla populations appear to be devoid of detectable variation, while Atlanticcontinental (i.e. Brazilian) populations show much higher haplotype and nucleotide diversities and display slight genetic differentiation among populations within the Atlantic region, though not statistically significant. Both species show a pronounced divergence between regions, supporting the presence of a phylogeographic barrier. |
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Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabsFiddler crabs (Brachyura, Ocypodidae), like many other marine organisms, disperse via planktonic larvae. A lengthy pelagic larval duration is generally assumed to result in genetic connectivity even among distant populations. However, major river outflows, such as of the Amazon or Orinoco, or strong currents may act as phylogeographic barriers to ongoing gene flow. For example, the Mona Passage, located between Puerto Rico and Hispaniola, has been postulated to impair larval exchange of several species. In this study, Cox1 mtDNA data was used to analyze population genetic structure of two fiddler crab species from the western Atlantic, comparing the continental coastline and Caribbean islands. The results indicate genetic homogeneity in Minuca rapax among Atlantic (continental) populations (Suriname, Brazil), whereas Caribbean populations show significantly restricted gene flow among the constituent islands and towards continental populations. Our data support the hypothesis of the Mona Passage hindering larval exchange. Contrastingly, Caribbean Leptuca leptodactyla populations appear to be devoid of detectable variation, while Atlanticcontinental (i.e. Brazilian) populations show much higher haplotype and nucleotide diversities and display slight genetic differentiation among populations within the Atlantic region, though not statistically significant. Both species show a pronounced divergence between regions, supporting the presence of a phylogeographic barrier.Department of Zoology University of RegensburgDepartment of Biology University of Louisiana at LafayetteBiosciences Institute São Paulo State University (UNESP)Biosciences Institute São Paulo State University (UNESP)University of RegensburgUniversity of Louisiana at LafayetteUniversidade Estadual Paulista (Unesp)Laurenzano, ClaudiaCosta, Tânia M. [UNESP]Schubart, Christoph D.2018-12-11T16:44:41Z2018-12-11T16:44:41Z2016-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1371/journal.pone.0166518PLoS ONE, v. 11, n. 11, 2016.1932-6203http://hdl.handle.net/11449/16915210.1371/journal.pone.01665182-s2.0-849959317472-s2.0-84995931747.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPLoS ONE1,164info:eu-repo/semantics/openAccess2023-10-09T06:03:07Zoai:repositorio.unesp.br:11449/169152Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-05-23T11:54:07.005726Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs |
title |
Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs |
spellingShingle |
Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs Laurenzano, Claudia |
title_short |
Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs |
title_full |
Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs |
title_fullStr |
Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs |
title_full_unstemmed |
Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs |
title_sort |
Contrasting patterns of clinal genetic diversity and potential colonization pathways in two species of western atlantic fiddler crabs |
author |
Laurenzano, Claudia |
author_facet |
Laurenzano, Claudia Costa, Tânia M. [UNESP] Schubart, Christoph D. |
author_role |
author |
author2 |
Costa, Tânia M. [UNESP] Schubart, Christoph D. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
University of Regensburg University of Louisiana at Lafayette Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Laurenzano, Claudia Costa, Tânia M. [UNESP] Schubart, Christoph D. |
description |
Fiddler crabs (Brachyura, Ocypodidae), like many other marine organisms, disperse via planktonic larvae. A lengthy pelagic larval duration is generally assumed to result in genetic connectivity even among distant populations. However, major river outflows, such as of the Amazon or Orinoco, or strong currents may act as phylogeographic barriers to ongoing gene flow. For example, the Mona Passage, located between Puerto Rico and Hispaniola, has been postulated to impair larval exchange of several species. In this study, Cox1 mtDNA data was used to analyze population genetic structure of two fiddler crab species from the western Atlantic, comparing the continental coastline and Caribbean islands. The results indicate genetic homogeneity in Minuca rapax among Atlantic (continental) populations (Suriname, Brazil), whereas Caribbean populations show significantly restricted gene flow among the constituent islands and towards continental populations. Our data support the hypothesis of the Mona Passage hindering larval exchange. Contrastingly, Caribbean Leptuca leptodactyla populations appear to be devoid of detectable variation, while Atlanticcontinental (i.e. Brazilian) populations show much higher haplotype and nucleotide diversities and display slight genetic differentiation among populations within the Atlantic region, though not statistically significant. Both species show a pronounced divergence between regions, supporting the presence of a phylogeographic barrier. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-11-01 2018-12-11T16:44:41Z 2018-12-11T16:44:41Z |
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/10.1371/journal.pone.0166518 PLoS ONE, v. 11, n. 11, 2016. 1932-6203 http://hdl.handle.net/11449/169152 10.1371/journal.pone.0166518 2-s2.0-84995931747 2-s2.0-84995931747.pdf |
url |
http://dx.doi.org/10.1371/journal.pone.0166518 http://hdl.handle.net/11449/169152 |
identifier_str_mv |
PLoS ONE, v. 11, n. 11, 2016. 1932-6203 10.1371/journal.pone.0166518 2-s2.0-84995931747 2-s2.0-84995931747.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
PLoS ONE 1,164 |
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.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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1803045900786860032 |