Data from: Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography
Antarctic waters represent a unique marine environment delimited by an oceanographic barrier, the Polar Front Zone, and characterized by constant subzero temperatures and presence of sea ice. A group of teleost fish, the Notothenioidei, have adapted to these challenging environmental conditions, und...
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ftdryad:oai:v1.datadryad.org:10255/dryad.540 2023-05-15T13:43:51+02:00 Data from: Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography Bargelloni, Luca Marcato, Stefania Zane, Lorenzo Patarnello, Tomaso 2009-06-13T20:01:25Z http://hdl.handle.net/10255/dryad.540 https://doi.org/10.5061/dryad.540 unknown Systematic Biology doi:10.5061/dryad.540/1 doi:10.5061/dryad.540/2 doi:10.1080/10635150050207429 doi:10.5061/dryad.540 Bargelloni L, Marcato S, Zane L, Patarnello T (2000) Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography. Systematic Biology 49: 114-129. http://hdl.handle.net/10255/dryad.540 antarctic fish mtDNA ribosomal RNA phylogeny evolution biogeography Article 2009 ftdryad https://doi.org/10.5061/dryad.540 https://doi.org/10.5061/dryad.540/1 https://doi.org/10.5061/dryad.540/2 https://doi.org/10.1080/10635150050207429 2020-01-01T14:13:54Z Antarctic waters represent a unique marine environment delimited by an oceanographic barrier, the Polar Front Zone, and characterized by constant subzero temperatures and presence of sea ice. A group of teleost fish, the Notothenioidei, have adapted to these challenging environmental conditions, undergoing a remarkable diversification. In the present study a total of 798 base pairs, generated from partial sequencing of 16S and 12S mitochondrial ribosomal RNA genes, were examined in 33 notothenioid species representative of all families included in the suborder Notothenioidei. Phylogenetic trees, reconstructed on the basis of sequence data using different methods, indicate that traditional hypotheses on notothenioid systematics and biogeography might be in need of reexamination. Molecular evidence suggests that vicariant speciation could be invoked to explain the early divergence of Eleginops maclovinus, a species previously included in the family Nototheniidae, which is now proposed as the closest sister group to all the rest of notothenioids apart from bovichtids. On the other hand, repeated, independent dispersal through the Polar Front is proposed for the divergence of other subantarctic notothenioid species. Likewise, multiple, independent transitions from benthic to pelagic habit are inferred from molecular data, at variance with the more conservative hypothesis based on cladograms reconstructed from morphological data. Article in Journal/Newspaper Antarc* Antarctic Sea ice Dryad Digital Repository (Duke University) Antarctic |
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Dryad Digital Repository (Duke University) |
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ftdryad |
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unknown |
topic |
antarctic fish mtDNA ribosomal RNA phylogeny evolution biogeography |
spellingShingle |
antarctic fish mtDNA ribosomal RNA phylogeny evolution biogeography Bargelloni, Luca Marcato, Stefania Zane, Lorenzo Patarnello, Tomaso Data from: Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography |
topic_facet |
antarctic fish mtDNA ribosomal RNA phylogeny evolution biogeography |
description |
Antarctic waters represent a unique marine environment delimited by an oceanographic barrier, the Polar Front Zone, and characterized by constant subzero temperatures and presence of sea ice. A group of teleost fish, the Notothenioidei, have adapted to these challenging environmental conditions, undergoing a remarkable diversification. In the present study a total of 798 base pairs, generated from partial sequencing of 16S and 12S mitochondrial ribosomal RNA genes, were examined in 33 notothenioid species representative of all families included in the suborder Notothenioidei. Phylogenetic trees, reconstructed on the basis of sequence data using different methods, indicate that traditional hypotheses on notothenioid systematics and biogeography might be in need of reexamination. Molecular evidence suggests that vicariant speciation could be invoked to explain the early divergence of Eleginops maclovinus, a species previously included in the family Nototheniidae, which is now proposed as the closest sister group to all the rest of notothenioids apart from bovichtids. On the other hand, repeated, independent dispersal through the Polar Front is proposed for the divergence of other subantarctic notothenioid species. Likewise, multiple, independent transitions from benthic to pelagic habit are inferred from molecular data, at variance with the more conservative hypothesis based on cladograms reconstructed from morphological data. |
format |
Article in Journal/Newspaper |
author |
Bargelloni, Luca Marcato, Stefania Zane, Lorenzo Patarnello, Tomaso |
author_facet |
Bargelloni, Luca Marcato, Stefania Zane, Lorenzo Patarnello, Tomaso |
author_sort |
Bargelloni, Luca |
title |
Data from: Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography |
title_short |
Data from: Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography |
title_full |
Data from: Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography |
title_fullStr |
Data from: Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography |
title_full_unstemmed |
Data from: Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography |
title_sort |
data from: mitochondrial phylogeny of notothenioids: a molecular approach to antarctic fish evolution and biogeography |
publishDate |
2009 |
url |
http://hdl.handle.net/10255/dryad.540 https://doi.org/10.5061/dryad.540 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_relation |
Systematic Biology doi:10.5061/dryad.540/1 doi:10.5061/dryad.540/2 doi:10.1080/10635150050207429 doi:10.5061/dryad.540 Bargelloni L, Marcato S, Zane L, Patarnello T (2000) Mitochondrial phylogeny of notothenioids: a molecular approach to Antarctic fish evolution and biogeography. Systematic Biology 49: 114-129. http://hdl.handle.net/10255/dryad.540 |
op_doi |
https://doi.org/10.5061/dryad.540 https://doi.org/10.5061/dryad.540/1 https://doi.org/10.5061/dryad.540/2 https://doi.org/10.1080/10635150050207429 |
_version_ |
1766194193922785280 |