Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum
It has long been maintained that the majority of terrestrial Antarctic species are relatively recent, post last glacial maximum, arrivals with perhaps a few microbial or protozoan taxa being substantially older. Recent studies have questioned this 'recolonization hypothesis', though the ra...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Royal Society
2011
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/14481/ |
id |
ftnerc:oai:nora.nerc.ac.uk:14481 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:14481 2023-05-15T13:45:11+02:00 Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum Mortimer, E. van Vuuren, B. Lee, J.E. Marshall, D.J. Convey, Peter Chown, S.L. 2011 http://nora.nerc.ac.uk/id/eprint/14481/ unknown Royal Society Mortimer, E.; van Vuuren, B.; Lee, J.E.; Marshall, D.J.; Convey, Peter orcid:0000-0001-8497-9903 Chown, S.L. 2011 Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum. Proceedings of the Royal Society of London, B, 278 (1709). 1247-1255. https://doi.org/10.1098/rspb.2010.1779 <https://doi.org/10.1098/rspb.2010.1779> Biology and Microbiology Ecology and Environment Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1098/rspb.2010.1779 2023-02-04T19:29:14Z It has long been maintained that the majority of terrestrial Antarctic species are relatively recent, post last glacial maximum, arrivals with perhaps a few microbial or protozoan taxa being substantially older. Recent studies have questioned this 'recolonization hypothesis', though the range of taxa examined has been limited. Here, we present the first large-scale study for mites, one of two dominant terrestrial arthropod groups in the region. Specifically, we provide a broad-scale molecular phylogeny of a biologically significant group of ameronothroid mites from across the maritime and sub-Antarctic regions. Applying different dating approaches, we show that divergences among the ameronothroid mite genera Podacarus, Alaskozetes and Halozetes significantly predate the Pleistocene and provide evidence of independent dispersals across the Antarctic Polar Front. Our data add to a growing body of evidence demonstrating that many taxa have survived glaciation of the Antarctic continent and the sub-Antarctic islands. Moreover, they also provide evidence of a relatively uncommon trend of dispersals from islands to continental mainlands. Within the ameronothroid mites, two distinct clades with specific habitat preferences ( marine intertidal versus terrestrial/supralittoral) exist, supporting a model of within-habitat speciation rather than colonization from marine refugia to terrestrial habitats. The present results provide additional impetus for a search for terrestrial refugia in an area previously thought to have lacked ice-free ground during glacial maxima. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Mite Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Proceedings of the Royal Society B: Biological Sciences 278 1709 1247 1255 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Biology and Microbiology Ecology and Environment |
spellingShingle |
Biology and Microbiology Ecology and Environment Mortimer, E. van Vuuren, B. Lee, J.E. Marshall, D.J. Convey, Peter Chown, S.L. Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum |
topic_facet |
Biology and Microbiology Ecology and Environment |
description |
It has long been maintained that the majority of terrestrial Antarctic species are relatively recent, post last glacial maximum, arrivals with perhaps a few microbial or protozoan taxa being substantially older. Recent studies have questioned this 'recolonization hypothesis', though the range of taxa examined has been limited. Here, we present the first large-scale study for mites, one of two dominant terrestrial arthropod groups in the region. Specifically, we provide a broad-scale molecular phylogeny of a biologically significant group of ameronothroid mites from across the maritime and sub-Antarctic regions. Applying different dating approaches, we show that divergences among the ameronothroid mite genera Podacarus, Alaskozetes and Halozetes significantly predate the Pleistocene and provide evidence of independent dispersals across the Antarctic Polar Front. Our data add to a growing body of evidence demonstrating that many taxa have survived glaciation of the Antarctic continent and the sub-Antarctic islands. Moreover, they also provide evidence of a relatively uncommon trend of dispersals from islands to continental mainlands. Within the ameronothroid mites, two distinct clades with specific habitat preferences ( marine intertidal versus terrestrial/supralittoral) exist, supporting a model of within-habitat speciation rather than colonization from marine refugia to terrestrial habitats. The present results provide additional impetus for a search for terrestrial refugia in an area previously thought to have lacked ice-free ground during glacial maxima. |
format |
Article in Journal/Newspaper |
author |
Mortimer, E. van Vuuren, B. Lee, J.E. Marshall, D.J. Convey, Peter Chown, S.L. |
author_facet |
Mortimer, E. van Vuuren, B. Lee, J.E. Marshall, D.J. Convey, Peter Chown, S.L. |
author_sort |
Mortimer, E. |
title |
Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum |
title_short |
Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum |
title_full |
Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum |
title_fullStr |
Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum |
title_full_unstemmed |
Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum |
title_sort |
mite dispersal among the southern ocean islands and antarctica before the last glacial maximum |
publisher |
Royal Society |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/14481/ |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Southern Ocean Mite |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean Mite |
op_relation |
Mortimer, E.; van Vuuren, B.; Lee, J.E.; Marshall, D.J.; Convey, Peter orcid:0000-0001-8497-9903 Chown, S.L. 2011 Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum. Proceedings of the Royal Society of London, B, 278 (1709). 1247-1255. https://doi.org/10.1098/rspb.2010.1779 <https://doi.org/10.1098/rspb.2010.1779> |
op_doi |
https://doi.org/10.1098/rspb.2010.1779 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
278 |
container_issue |
1709 |
container_start_page |
1247 |
op_container_end_page |
1255 |
_version_ |
1766215726670020608 |