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Evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents

The characterization of evolutionary and biogeographical patterns is of fundamental importance to identify factors driving biodiversity. Due to their widespread but discontinuous distribution, deep‐sea hydrothermal vent barnacles represent an excellent model for testing biogeographical hypotheses re...

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Autores principales: Herrera, Santiago, Watanabe, Hiromi, Shank, Timothy M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5006861/
https://www.ncbi.nlm.nih.gov/pubmed/25602032
http://dx.doi.org/10.1111/mec.13054
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author Herrera, Santiago
Watanabe, Hiromi
Shank, Timothy M.
author_facet Herrera, Santiago
Watanabe, Hiromi
Shank, Timothy M.
author_sort Herrera, Santiago
collection PubMed
description The characterization of evolutionary and biogeographical patterns is of fundamental importance to identify factors driving biodiversity. Due to their widespread but discontinuous distribution, deep‐sea hydrothermal vent barnacles represent an excellent model for testing biogeographical hypotheses regarding the origin, dispersal and diversity of modern vent fauna. Here, we characterize the global genetic diversity of vent barnacles to infer their time of radiation, place of origin, mode of dispersal and diversification. Our approach was to target a suite of multiple loci in samples representing seven of the eight described genera. We also performed restriction‐site associated DNA sequencing on individuals from each species. Phylogenetic inferences and topology hypothesis tests indicate that vent barnacles have colonized deep‐sea hydrothermal vents at least twice in history. Consistent with preliminary estimates, we find a likely radiation of barnacles in vent ecosystems during the Cenozoic. Our analyses suggest that the western Pacific was the place of origin of the major vent barnacle lineage, followed by circumglobal colonization eastwards through the Southern Hemisphere during the Neogene. The inferred time of radiation rejects the classic hypotheses of antiquity of vent taxa. The timing and the mode of origin, radiation and dispersal are consistent with recent inferences made for other deep‐sea taxa, including nonvent species, and are correlated with the occurrence of major geological events and mass extinctions. Thus, we suggest that the geological processes and dispersal mechanisms discussed here can explain the current distribution patterns of many other marine taxa and have played an important role shaping deep‐sea faunal diversity. These results also constitute the critical baseline data with which to assess potential effects of anthropogenic disturbances on deep‐sea ecosystems.
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spelling pubmed-50068612016-09-16 Evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents Herrera, Santiago Watanabe, Hiromi Shank, Timothy M. Mol Ecol Original Articles The characterization of evolutionary and biogeographical patterns is of fundamental importance to identify factors driving biodiversity. Due to their widespread but discontinuous distribution, deep‐sea hydrothermal vent barnacles represent an excellent model for testing biogeographical hypotheses regarding the origin, dispersal and diversity of modern vent fauna. Here, we characterize the global genetic diversity of vent barnacles to infer their time of radiation, place of origin, mode of dispersal and diversification. Our approach was to target a suite of multiple loci in samples representing seven of the eight described genera. We also performed restriction‐site associated DNA sequencing on individuals from each species. Phylogenetic inferences and topology hypothesis tests indicate that vent barnacles have colonized deep‐sea hydrothermal vents at least twice in history. Consistent with preliminary estimates, we find a likely radiation of barnacles in vent ecosystems during the Cenozoic. Our analyses suggest that the western Pacific was the place of origin of the major vent barnacle lineage, followed by circumglobal colonization eastwards through the Southern Hemisphere during the Neogene. The inferred time of radiation rejects the classic hypotheses of antiquity of vent taxa. The timing and the mode of origin, radiation and dispersal are consistent with recent inferences made for other deep‐sea taxa, including nonvent species, and are correlated with the occurrence of major geological events and mass extinctions. Thus, we suggest that the geological processes and dispersal mechanisms discussed here can explain the current distribution patterns of many other marine taxa and have played an important role shaping deep‐sea faunal diversity. These results also constitute the critical baseline data with which to assess potential effects of anthropogenic disturbances on deep‐sea ecosystems. John Wiley and Sons Inc. 2015-02 2015-01-20 /pmc/articles/PMC5006861/ /pubmed/25602032 http://dx.doi.org/10.1111/mec.13054 Text en © 2015 The Authors. Molecular Ecology Published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial (http://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Original Articles
Herrera, Santiago
Watanabe, Hiromi
Shank, Timothy M.
Evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents
title Evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents
title_full Evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents
title_fullStr Evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents
title_full_unstemmed Evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents
title_short Evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents
title_sort evolutionary and biogeographical patterns of barnacles from deep‐sea hydrothermal vents
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5006861/
https://www.ncbi.nlm.nih.gov/pubmed/25602032
http://dx.doi.org/10.1111/mec.13054
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