More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae)
The previously unclear taxonomic status of the high-Antarctic bivalve Limatula ovalis Thiele, 1912 and the sub-Antarctic L. pygmaea (Philippi, 1845) was investigated using molecular techniques (18S rDNA, 16S rDNA, ITS-1). L. ovalis and L. pygmaea were recovered as sister taxa, and L. hodgsoni (Smith...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/13611/ http://www.springerlink.com/content/4x0flv805tngfvuw/fulltext.pdf |
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ftnerc:oai:nora.nerc.ac.uk:13611 2023-05-15T13:45:11+02:00 More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) Page, Timothy J. Linse, Katrin 2002 http://nora.nerc.ac.uk/id/eprint/13611/ http://www.springerlink.com/content/4x0flv805tngfvuw/fulltext.pdf unknown Springer-Verlag Page, Timothy J.; Linse, Katrin orcid:0000-0003-3477-3047 . 2002 More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae). Polar Biology, 25 (11). 818-826. https://doi.org/10.1007/s00300-002-0414-7 <https://doi.org/10.1007/s00300-002-0414-7> Biology and Microbiology Ecology and Environment Publication - Article PeerReviewed 2002 ftnerc https://doi.org/10.1007/s00300-002-0414-7 2023-02-04T19:28:43Z The previously unclear taxonomic status of the high-Antarctic bivalve Limatula ovalis Thiele, 1912 and the sub-Antarctic L. pygmaea (Philippi, 1845) was investigated using molecular techniques (18S rDNA, 16S rDNA, ITS-1). L. ovalis and L. pygmaea were recovered as sister taxa, and L. hodgsoni (Smith, 1907) as their sister, supporting the subgenus Antarctolima Habe, 1977. Various different molecular clock calculations placed the timing of the L. ovalis/pygmaea divergence (1.36-8.03 MYA with 16S rDNA, 6.81-19.12 MYA with 18S rDNA, 0.24-2.87 MYA with ITS-1) well after the formation of the Antarctic Polar Front (23.5 MYA, APF), indicating a more recent speciation process. The vicariance hypothesis that the APF is a barrier for geneflow favouring speciation processes in the Southern Ocean has to be questioned. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Polar Biology 25 11 818 826 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
topic |
Biology and Microbiology Ecology and Environment |
spellingShingle |
Biology and Microbiology Ecology and Environment Page, Timothy J. Linse, Katrin More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) |
topic_facet |
Biology and Microbiology Ecology and Environment |
description |
The previously unclear taxonomic status of the high-Antarctic bivalve Limatula ovalis Thiele, 1912 and the sub-Antarctic L. pygmaea (Philippi, 1845) was investigated using molecular techniques (18S rDNA, 16S rDNA, ITS-1). L. ovalis and L. pygmaea were recovered as sister taxa, and L. hodgsoni (Smith, 1907) as their sister, supporting the subgenus Antarctolima Habe, 1977. Various different molecular clock calculations placed the timing of the L. ovalis/pygmaea divergence (1.36-8.03 MYA with 16S rDNA, 6.81-19.12 MYA with 18S rDNA, 0.24-2.87 MYA with ITS-1) well after the formation of the Antarctic Polar Front (23.5 MYA, APF), indicating a more recent speciation process. The vicariance hypothesis that the APF is a barrier for geneflow favouring speciation processes in the Southern Ocean has to be questioned. |
format |
Article in Journal/Newspaper |
author |
Page, Timothy J. Linse, Katrin |
author_facet |
Page, Timothy J. Linse, Katrin |
author_sort |
Page, Timothy J. |
title |
More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) |
title_short |
More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) |
title_full |
More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) |
title_fullStr |
More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) |
title_full_unstemmed |
More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) |
title_sort |
more evidence of speciation and dispersal across the antarctic polar front through molecular systematics of southern ocean limatula (bivalvia: limidae) |
publisher |
Springer-Verlag |
publishDate |
2002 |
url |
http://nora.nerc.ac.uk/id/eprint/13611/ http://www.springerlink.com/content/4x0flv805tngfvuw/fulltext.pdf |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic Polar Biology Southern Ocean |
op_relation |
Page, Timothy J.; Linse, Katrin orcid:0000-0003-3477-3047 . 2002 More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae). Polar Biology, 25 (11). 818-826. https://doi.org/10.1007/s00300-002-0414-7 <https://doi.org/10.1007/s00300-002-0414-7> |
op_doi |
https://doi.org/10.1007/s00300-002-0414-7 |
container_title |
Polar Biology |
container_volume |
25 |
container_issue |
11 |
container_start_page |
818 |
op_container_end_page |
826 |
_version_ |
1766215563395203072 |