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...
Published in: | Polar Biology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer
2002
|
Subjects: | |
Online Access: | http://hdl.handle.net/10072/22689 https://doi.org/10.1007/s00300-002-0414-7 |
id |
ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/22689 |
---|---|
record_format |
openpolar |
spelling |
ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/22689 2023-05-15T13:52:29+02:00 More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) Page, Tim Linse, Katrin 2002 http://hdl.handle.net/10072/22689 https://doi.org/10.1007/s00300-002-0414-7 English en_AU eng Springer Polar Biology Journal article 2002 ftgriffithuniv https://doi.org/10.1007/s00300-002-0414-7 2018-07-30T10:52:41Z 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. Griffith Sciences, Griffith School of Environment No Full Text Article in Journal/Newspaper Antarc* Antarctic Polar Biology Southern Ocean Griffith University: Griffith Research Online Antarctic Griffith ENVELOPE(-155.500,-155.500,-85.883,-85.883) Southern Ocean The Antarctic Polar Biology 25 11 818 826 |
institution |
Open Polar |
collection |
Griffith University: Griffith Research Online |
op_collection_id |
ftgriffithuniv |
language |
English |
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. Griffith Sciences, Griffith School of Environment No Full Text |
format |
Article in Journal/Newspaper |
author |
Page, Tim Linse, Katrin |
spellingShingle |
Page, Tim Linse, Katrin More evidence of speciation and dispersal across the Antarctic Polar Front through molecular systematics of Southern Ocean Limatula (Bivalvia: Limidae) |
author_facet |
Page, Tim Linse, Katrin |
author_sort |
Page, Tim |
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 |
publishDate |
2002 |
url |
http://hdl.handle.net/10072/22689 https://doi.org/10.1007/s00300-002-0414-7 |
long_lat |
ENVELOPE(-155.500,-155.500,-85.883,-85.883) |
geographic |
Antarctic Griffith Southern Ocean The Antarctic |
geographic_facet |
Antarctic Griffith Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic Polar Biology Southern Ocean |
op_relation |
Polar Biology |
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_ |
1766256775550468096 |