Long distance dispersal and connectivity in amphi-Atlantic corals at regional and basin scales.

Among Atlantic scleractinian corals, species diversity is highest in the Caribbean, but low diversity and high endemism are observed in various peripheral populations in central and eastern Atlantic islands and along the coasts of Brazil and West Africa. The degree of connectivity between these dist...

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Autores principales: Flavia L D Nunes, Richard D Norris, Nancy Knowlton
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Publicado: Public Library of Science (PLoS) 2011
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spelling oai:doaj.org-article:1f69fea256af4559b326aab14964b0062021-11-18T06:49:38ZLong distance dispersal and connectivity in amphi-Atlantic corals at regional and basin scales.1932-620310.1371/journal.pone.0022298https://doaj.org/article/1f69fea256af4559b326aab14964b0062011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21799816/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Among Atlantic scleractinian corals, species diversity is highest in the Caribbean, but low diversity and high endemism are observed in various peripheral populations in central and eastern Atlantic islands and along the coasts of Brazil and West Africa. The degree of connectivity between these distantly separated populations is of interest because it provides insight into processes at both evolutionary and ecological time scales, such as speciation, recruitment dynamics and the persistence of coral populations. To assess connectivity in broadly distributed coral species of the Atlantic, DNA sequence data from two nuclear markers were obtained for six coral species spanning their distributional ranges. At basin-wide scales, significant differentiation was generally observed among populations in the Caribbean, Brazil and West Africa. Concordance of patterns in connectivity among co-distributed taxa indicates that extrinsic barriers, such as the Amazon freshwater plume or long stretches of open ocean, restrict dispersal of coral larvae from region to region. Within regions, dispersal ability appears to be influenced by aspects of reproduction and life history. Two broadcasting species, Siderastrea siderea and Montastraea cavernosa, were able to maintain gene flow among populations separated by as much as 1,200 km along the coast of Brazil. In contrast, brooding species, such as Favia gravida and Siderastrea radians, had more restricted gene flow along the Brazilian coast.Flavia L D NunesRichard D NorrisNancy KnowltonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 7, p e22298 (2011)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Flavia L D Nunes
Richard D Norris
Nancy Knowlton
Long distance dispersal and connectivity in amphi-Atlantic corals at regional and basin scales.
description Among Atlantic scleractinian corals, species diversity is highest in the Caribbean, but low diversity and high endemism are observed in various peripheral populations in central and eastern Atlantic islands and along the coasts of Brazil and West Africa. The degree of connectivity between these distantly separated populations is of interest because it provides insight into processes at both evolutionary and ecological time scales, such as speciation, recruitment dynamics and the persistence of coral populations. To assess connectivity in broadly distributed coral species of the Atlantic, DNA sequence data from two nuclear markers were obtained for six coral species spanning their distributional ranges. At basin-wide scales, significant differentiation was generally observed among populations in the Caribbean, Brazil and West Africa. Concordance of patterns in connectivity among co-distributed taxa indicates that extrinsic barriers, such as the Amazon freshwater plume or long stretches of open ocean, restrict dispersal of coral larvae from region to region. Within regions, dispersal ability appears to be influenced by aspects of reproduction and life history. Two broadcasting species, Siderastrea siderea and Montastraea cavernosa, were able to maintain gene flow among populations separated by as much as 1,200 km along the coast of Brazil. In contrast, brooding species, such as Favia gravida and Siderastrea radians, had more restricted gene flow along the Brazilian coast.
format article
author Flavia L D Nunes
Richard D Norris
Nancy Knowlton
author_facet Flavia L D Nunes
Richard D Norris
Nancy Knowlton
author_sort Flavia L D Nunes
title Long distance dispersal and connectivity in amphi-Atlantic corals at regional and basin scales.
title_short Long distance dispersal and connectivity in amphi-Atlantic corals at regional and basin scales.
title_full Long distance dispersal and connectivity in amphi-Atlantic corals at regional and basin scales.
title_fullStr Long distance dispersal and connectivity in amphi-Atlantic corals at regional and basin scales.
title_full_unstemmed Long distance dispersal and connectivity in amphi-Atlantic corals at regional and basin scales.
title_sort long distance dispersal and connectivity in amphi-atlantic corals at regional and basin scales.
publisher Public Library of Science (PLoS)
publishDate 2011
url https://doaj.org/article/1f69fea256af4559b326aab14964b006
work_keys_str_mv AT flavialdnunes longdistancedispersalandconnectivityinamphiatlanticcoralsatregionalandbasinscales
AT richarddnorris longdistancedispersalandconnectivityinamphiatlanticcoralsatregionalandbasinscales
AT nancyknowlton longdistancedispersalandconnectivityinamphiatlanticcoralsatregionalandbasinscales
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