Data from: Evolution and origin of sympatric shallow-water morphotypes of Lake Trout, Salvelinus namaycush, in Canada's Great Bear Lake
Range expansion in north-temperate fishes subsequent to the retreat of the Wisconsinan glaciers has resulted in the rapid colonization of previously unexploited, heterogeneous habitats and, in many situations, secondary contact among conspecific lineages that were once previously isolated. Such ecol...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:86454 2023-07-02T03:32:20+02:00 Data from: Evolution and origin of sympatric shallow-water morphotypes of Lake Trout, Salvelinus namaycush, in Canada's Great Bear Lake Harris, Les N. Chavarie, Louise Bajno, Robert Howland, Kimberly L. Wiley, Simon H. Tonn, William M. Taylor, Eric B. 2014-07-18T16:22:17.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-ta-w6b2 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:86454 unknown doi:10.5061/dryad.1368p/1 doi:10.1038/hdy.2014.74 PMID:25204304 http://nbn-resolving.org/urn:nbn:nl:ui:13-ta-w6b2 doi:10.5061/dryad.1368p https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:86454 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2014 ftdans https://doi.org/10.5061/dryad.1368p/110.1038/hdy.2014.7410.5061/dryad.1368p 2023-06-13T13:13:58Z Range expansion in north-temperate fishes subsequent to the retreat of the Wisconsinan glaciers has resulted in the rapid colonization of previously unexploited, heterogeneous habitats and, in many situations, secondary contact among conspecific lineages that were once previously isolated. Such ecological opportunity coupled with reduced competition likely promoted morphological and genetic differentiation within and among post-glacial fish populations. Discrete morphological forms existing in sympatry, for example, have now been described in many species, yet few studies have directly assessed the association between morphological and genetic variation. Morphotypes of Lake Trout, Salvelinus namaycush, are found in several large-lake systems including Great Bear Lake (GBL), Northwest Territories, Canada, where several shallow-water forms are known. Here, we assess microsatellite and mitochondrial DNA variation among four morphotypes of Lake Trout from the five distinct arms of GBL, and also from locations outside of this system to evaluate several hypotheses concerning the evolution of morphological variation in this species. Our data indicate that morphotypes of Lake Trout from GBL are genetically differentiated from one another, yet the morphotypes are still genetically more similar to one another compared with populations from outside of this system. Furthermore, our data suggest that Lake Trout colonized GBL following dispersal from a single glacial refugium (the Mississippian) and support an intra-lake model of divergence. Overall, our study provides insights into the origins of morphological and genetic variation in post-glacial populations of fishes and provides benchmarks important for monitoring Lake Trout biodiversity in a region thought to be disproportionately susceptible to impacts from climate change. Other/Unknown Material glacier* Great Bear Lake Northwest Territories Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Northwest Territories Canada Great Bear Lake ENVELOPE(-120.753,-120.753,65.834,65.834) |
institution |
Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Harris, Les N. Chavarie, Louise Bajno, Robert Howland, Kimberly L. Wiley, Simon H. Tonn, William M. Taylor, Eric B. Data from: Evolution and origin of sympatric shallow-water morphotypes of Lake Trout, Salvelinus namaycush, in Canada's Great Bear Lake |
topic_facet |
Life sciences medicine and health care |
description |
Range expansion in north-temperate fishes subsequent to the retreat of the Wisconsinan glaciers has resulted in the rapid colonization of previously unexploited, heterogeneous habitats and, in many situations, secondary contact among conspecific lineages that were once previously isolated. Such ecological opportunity coupled with reduced competition likely promoted morphological and genetic differentiation within and among post-glacial fish populations. Discrete morphological forms existing in sympatry, for example, have now been described in many species, yet few studies have directly assessed the association between morphological and genetic variation. Morphotypes of Lake Trout, Salvelinus namaycush, are found in several large-lake systems including Great Bear Lake (GBL), Northwest Territories, Canada, where several shallow-water forms are known. Here, we assess microsatellite and mitochondrial DNA variation among four morphotypes of Lake Trout from the five distinct arms of GBL, and also from locations outside of this system to evaluate several hypotheses concerning the evolution of morphological variation in this species. Our data indicate that morphotypes of Lake Trout from GBL are genetically differentiated from one another, yet the morphotypes are still genetically more similar to one another compared with populations from outside of this system. Furthermore, our data suggest that Lake Trout colonized GBL following dispersal from a single glacial refugium (the Mississippian) and support an intra-lake model of divergence. Overall, our study provides insights into the origins of morphological and genetic variation in post-glacial populations of fishes and provides benchmarks important for monitoring Lake Trout biodiversity in a region thought to be disproportionately susceptible to impacts from climate change. |
author |
Harris, Les N. Chavarie, Louise Bajno, Robert Howland, Kimberly L. Wiley, Simon H. Tonn, William M. Taylor, Eric B. |
author_facet |
Harris, Les N. Chavarie, Louise Bajno, Robert Howland, Kimberly L. Wiley, Simon H. Tonn, William M. Taylor, Eric B. |
author_sort |
Harris, Les N. |
title |
Data from: Evolution and origin of sympatric shallow-water morphotypes of Lake Trout, Salvelinus namaycush, in Canada's Great Bear Lake |
title_short |
Data from: Evolution and origin of sympatric shallow-water morphotypes of Lake Trout, Salvelinus namaycush, in Canada's Great Bear Lake |
title_full |
Data from: Evolution and origin of sympatric shallow-water morphotypes of Lake Trout, Salvelinus namaycush, in Canada's Great Bear Lake |
title_fullStr |
Data from: Evolution and origin of sympatric shallow-water morphotypes of Lake Trout, Salvelinus namaycush, in Canada's Great Bear Lake |
title_full_unstemmed |
Data from: Evolution and origin of sympatric shallow-water morphotypes of Lake Trout, Salvelinus namaycush, in Canada's Great Bear Lake |
title_sort |
data from: evolution and origin of sympatric shallow-water morphotypes of lake trout, salvelinus namaycush, in canada's great bear lake |
publishDate |
2014 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-ta-w6b2 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:86454 |
long_lat |
ENVELOPE(-120.753,-120.753,65.834,65.834) |
geographic |
Northwest Territories Canada Great Bear Lake |
geographic_facet |
Northwest Territories Canada Great Bear Lake |
genre |
glacier* Great Bear Lake Northwest Territories |
genre_facet |
glacier* Great Bear Lake Northwest Territories |
op_relation |
doi:10.5061/dryad.1368p/1 doi:10.1038/hdy.2014.74 PMID:25204304 http://nbn-resolving.org/urn:nbn:nl:ui:13-ta-w6b2 doi:10.5061/dryad.1368p https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:86454 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.1368p/110.1038/hdy.2014.7410.5061/dryad.1368p |
_version_ |
1770271882389487616 |