Genetic diversity among populations of Antarctic springtails (Collembola) within the Mackay Glacier ecotone
Past climate changes are likely to have had major influences on the distribution and abundance of Antarctic terrestrial biota. To assess arthropod distribution and diversity within the Ross Sea region, we examined mitochondrial DNA (COI) sequences for three currently recognised species of springtail...
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ftunivtoronto:oai:localhost:1807/73318 2023-05-15T13:35:23+02:00 Genetic diversity among populations of Antarctic springtails (Collembola) within the Mackay Glacier ecotone Beet, Clare Rose Hogg, Ian D. Collins, Gemma E Cowan, Don A Wall, Diana H Adams, Byron J 2016-04-20 http://hdl.handle.net/1807/73318 http://www.nrcresearchpress.com/doi/abs/10.1139/gen-2015-0194 unknown NRC Research Press (a division of Canadian Science Publishing) 0831-2796 http://hdl.handle.net/1807/73318 http://www.nrcresearchpress.com/doi/abs/10.1139/gen-2015-0194 Article 2016 ftunivtoronto 2020-06-17T12:00:23Z Past climate changes are likely to have had major influences on the distribution and abundance of Antarctic terrestrial biota. To assess arthropod distribution and diversity within the Ross Sea region, we examined mitochondrial DNA (COI) sequences for three currently recognised species of springtail (Collembola) collected from sites in the vicinity, and to the north of, the Mackay Glacier (77oS). This area is also a transition between two biogeographic regions (northern and southern Victoria Land). We found populations of highly divergent individuals (5-11.3% intraspecific sequence divergence) for each of the three putative springtail species, suggesting the possibility of cryptic diversity. Based on molecular clock estimates, these divergent lineages are likely to have been isolated for 3-5 million years. It was during this time that the Western Antarctic Ice Sheet (WAIS) was likely to have completely collapsed potentially facilitating springtail dispersal via rafting on running waters and open seaways. The reformation of the WAIS would have isolated newly established populations with subsequent dispersal restricted by glaciers and ice-covered areas. Given the currently limited distributions for these genetically divergent populations, any future changes in speciesâ distributions can be easily tracked through the DNA barcoding of springtails from within the Mackay Glacier ecotone. The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ross Sea Victoria Land ice covered areas Springtail University of Toronto: Research Repository T-Space Antarctic Mackay ENVELOPE(168.517,168.517,-77.700,-77.700) Mackay Glacier ENVELOPE(162.000,162.000,-76.967,-76.967) Ross Sea Victoria Land |
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University of Toronto: Research Repository T-Space |
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description |
Past climate changes are likely to have had major influences on the distribution and abundance of Antarctic terrestrial biota. To assess arthropod distribution and diversity within the Ross Sea region, we examined mitochondrial DNA (COI) sequences for three currently recognised species of springtail (Collembola) collected from sites in the vicinity, and to the north of, the Mackay Glacier (77oS). This area is also a transition between two biogeographic regions (northern and southern Victoria Land). We found populations of highly divergent individuals (5-11.3% intraspecific sequence divergence) for each of the three putative springtail species, suggesting the possibility of cryptic diversity. Based on molecular clock estimates, these divergent lineages are likely to have been isolated for 3-5 million years. It was during this time that the Western Antarctic Ice Sheet (WAIS) was likely to have completely collapsed potentially facilitating springtail dispersal via rafting on running waters and open seaways. The reformation of the WAIS would have isolated newly established populations with subsequent dispersal restricted by glaciers and ice-covered areas. Given the currently limited distributions for these genetically divergent populations, any future changes in speciesâ distributions can be easily tracked through the DNA barcoding of springtails from within the Mackay Glacier ecotone. The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author. |
format |
Article in Journal/Newspaper |
author |
Beet, Clare Rose Hogg, Ian D. Collins, Gemma E Cowan, Don A Wall, Diana H Adams, Byron J |
spellingShingle |
Beet, Clare Rose Hogg, Ian D. Collins, Gemma E Cowan, Don A Wall, Diana H Adams, Byron J Genetic diversity among populations of Antarctic springtails (Collembola) within the Mackay Glacier ecotone |
author_facet |
Beet, Clare Rose Hogg, Ian D. Collins, Gemma E Cowan, Don A Wall, Diana H Adams, Byron J |
author_sort |
Beet, Clare Rose |
title |
Genetic diversity among populations of Antarctic springtails (Collembola) within the Mackay Glacier ecotone |
title_short |
Genetic diversity among populations of Antarctic springtails (Collembola) within the Mackay Glacier ecotone |
title_full |
Genetic diversity among populations of Antarctic springtails (Collembola) within the Mackay Glacier ecotone |
title_fullStr |
Genetic diversity among populations of Antarctic springtails (Collembola) within the Mackay Glacier ecotone |
title_full_unstemmed |
Genetic diversity among populations of Antarctic springtails (Collembola) within the Mackay Glacier ecotone |
title_sort |
genetic diversity among populations of antarctic springtails (collembola) within the mackay glacier ecotone |
publisher |
NRC Research Press (a division of Canadian Science Publishing) |
publishDate |
2016 |
url |
http://hdl.handle.net/1807/73318 http://www.nrcresearchpress.com/doi/abs/10.1139/gen-2015-0194 |
long_lat |
ENVELOPE(168.517,168.517,-77.700,-77.700) ENVELOPE(162.000,162.000,-76.967,-76.967) |
geographic |
Antarctic Mackay Mackay Glacier Ross Sea Victoria Land |
geographic_facet |
Antarctic Mackay Mackay Glacier Ross Sea Victoria Land |
genre |
Antarc* Antarctic Ice Sheet Ross Sea Victoria Land ice covered areas Springtail |
genre_facet |
Antarc* Antarctic Ice Sheet Ross Sea Victoria Land ice covered areas Springtail |
op_relation |
0831-2796 http://hdl.handle.net/1807/73318 http://www.nrcresearchpress.com/doi/abs/10.1139/gen-2015-0194 |
_version_ |
1766065138706677760 |