The polychaeta of Canada: Exploring diversity and distribution paterns using DNA barcodes
This thesis investigates the diversity and distribution of polychaetes from Canadian marine waters employing both morphological (literature reports) and molecular (mtDNA) approaches. Collation of species reports from the literature indicated that nearly 15% of the 1,023 Canadian polychaete species o...
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University of Guelph
2010
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ftunivguelph:oai:atrium.lib.uoguelph.ca:10214/20219 2023-11-05T03:39:36+01:00 The polychaeta of Canada: Exploring diversity and distribution paterns using DNA barcodes Carr, Christina M. Hebert, P.D.N. 2010 application/pdf https://hdl.handle.net/10214/20219 en eng University of Guelph https://hdl.handle.net/10214/20219 All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. Polychaeta DNA barcodes Diversity Distribution patterns Canadian marine waters Thesis 2010 ftunivguelph 2023-10-08T06:10:29Z This thesis investigates the diversity and distribution of polychaetes from Canadian marine waters employing both morphological (literature reports) and molecular (mtDNA) approaches. Collation of species reports from the literature indicated that nearly 15% of the 1,023 Canadian polychaete species occur in all three of Canada's oceans. In contrast, DNA barcode analysis of these widespread species indicated that most were species complexes. Barcode analysis of 333 provisional polychaete species revealed 40 times more sequence divergence between than within species, and extensive cryptic diversity in 36 morphospecies. Further examination of genetic discontinuities between Pacific and Atlantic-Arctic sister taxa indicated that periodic ice retreats during the Pleistocene enabled multiple migrations of polychaete species across the Bering Strait, ultimately increasing polychaete diversity in Canada. This thesis demonstrates the utility of DNA barcoding as a tool for species identification in polychaetes and for illuminating evolutionary and biogeographic patterns among species. Thesis Arctic Atlantic Arctic Atlantic-Arctic Bering Strait University of Guelph: DSpace digital archive |
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Open Polar |
collection |
University of Guelph: DSpace digital archive |
op_collection_id |
ftunivguelph |
language |
English |
topic |
Polychaeta DNA barcodes Diversity Distribution patterns Canadian marine waters |
spellingShingle |
Polychaeta DNA barcodes Diversity Distribution patterns Canadian marine waters Carr, Christina M. The polychaeta of Canada: Exploring diversity and distribution paterns using DNA barcodes |
topic_facet |
Polychaeta DNA barcodes Diversity Distribution patterns Canadian marine waters |
description |
This thesis investigates the diversity and distribution of polychaetes from Canadian marine waters employing both morphological (literature reports) and molecular (mtDNA) approaches. Collation of species reports from the literature indicated that nearly 15% of the 1,023 Canadian polychaete species occur in all three of Canada's oceans. In contrast, DNA barcode analysis of these widespread species indicated that most were species complexes. Barcode analysis of 333 provisional polychaete species revealed 40 times more sequence divergence between than within species, and extensive cryptic diversity in 36 morphospecies. Further examination of genetic discontinuities between Pacific and Atlantic-Arctic sister taxa indicated that periodic ice retreats during the Pleistocene enabled multiple migrations of polychaete species across the Bering Strait, ultimately increasing polychaete diversity in Canada. This thesis demonstrates the utility of DNA barcoding as a tool for species identification in polychaetes and for illuminating evolutionary and biogeographic patterns among species. |
author2 |
Hebert, P.D.N. |
format |
Thesis |
author |
Carr, Christina M. |
author_facet |
Carr, Christina M. |
author_sort |
Carr, Christina M. |
title |
The polychaeta of Canada: Exploring diversity and distribution paterns using DNA barcodes |
title_short |
The polychaeta of Canada: Exploring diversity and distribution paterns using DNA barcodes |
title_full |
The polychaeta of Canada: Exploring diversity and distribution paterns using DNA barcodes |
title_fullStr |
The polychaeta of Canada: Exploring diversity and distribution paterns using DNA barcodes |
title_full_unstemmed |
The polychaeta of Canada: Exploring diversity and distribution paterns using DNA barcodes |
title_sort |
polychaeta of canada: exploring diversity and distribution paterns using dna barcodes |
publisher |
University of Guelph |
publishDate |
2010 |
url |
https://hdl.handle.net/10214/20219 |
genre |
Arctic Atlantic Arctic Atlantic-Arctic Bering Strait |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic Bering Strait |
op_relation |
https://hdl.handle.net/10214/20219 |
op_rights |
All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. |
_version_ |
1781695480584994816 |