Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America
Abstract Background Pleistocene glaciations have had an important impact on the species distribution and community composition of the North American biota. Species survived these glacial cycles south of the ice sheets and/or in other refugia, such as Beringia. In this study, we assessed, using mitoc...
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ftdatacite:10.6084/m9.figshare.c.4793544.v1 2023-05-15T17:54:50+02:00 Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America Solecki, Anna Skevington, Jeffrey Buddle, Christopher Wheeler, Terry 2019 https://dx.doi.org/10.6084/m9.figshare.c.4793544.v1 https://springernature.figshare.com/collections/Phylogeography_of_higher_Diptera_in_glacial_and_postglacial_grasslands_in_western_North_America/4793544/1 unknown figshare https://dx.doi.org/10.1186/s12898-019-0266-4 https://dx.doi.org/10.6084/m9.figshare.c.4793544 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Genetics FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology 69999 Biological Sciences not elsewhere classified Collection article 2019 ftdatacite https://doi.org/10.6084/m9.figshare.c.4793544.v1 https://doi.org/10.1186/s12898-019-0266-4 https://doi.org/10.6084/m9.figshare.c.4793544 2021-11-05T12:55:41Z Abstract Background Pleistocene glaciations have had an important impact on the species distribution and community composition of the North American biota. Species survived these glacial cycles south of the ice sheets and/or in other refugia, such as Beringia. In this study, we assessed, using mitochondrial DNA from three Diptera species, whether flies currently found in Beringian grasslands (1) survived glaciation as disjunct populations in Beringia and in the southern refugium; (2) dispersed northward postglacially from the southern refugium; or (3) arose by a combination of the two. Samples were collected in grasslands in western Canada: Prairies in Alberta and Manitoba; the Peace River region (Alberta); and the southern Yukon Territory. We sequenced two gene regions (658 bp of cytochrome c oxidase subunit I, 510 bp of cytochrome b) from three species of higher Diptera: one with a continuous distribution across grassland regions, and two with disjunct populations between the regions. We used a Bayesian approach to determine population groupings without a priori assumptions and performed analysis of molecular variance (AMOVA) and exact tests of population differentiation (ETPD) to examine their validity. Molecular dating was used to establish divergence times. Results Two geographically structured populations were found for all species: a southern Prairie and Peace River population, and a Yukon population. Although AMOVA did not show significant differentiation between populations, ETPD did. Divergence time between Yukon and southern populations predated the Holocene for two species; the species with an ambiguous divergence time had high haplotype diversity, which could suggest survival in a Beringian refugium. Conclusions Populations of Diptera in Yukon grasslands could have persisted in steppe habitats in Beringia through Pleistocene glaciations. Current populations in the region appear to be a mix of Beringian relict populations and, to a lesser extent, postglacial dispersal northward from southern prairie grasslands. Article in Journal/Newspaper Peace River Beringia Yukon DataCite Metadata Store (German National Library of Science and Technology) Yukon Canada |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Genetics FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology 69999 Biological Sciences not elsewhere classified |
spellingShingle |
Genetics FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology 69999 Biological Sciences not elsewhere classified Solecki, Anna Skevington, Jeffrey Buddle, Christopher Wheeler, Terry Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America |
topic_facet |
Genetics FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology 69999 Biological Sciences not elsewhere classified |
description |
Abstract Background Pleistocene glaciations have had an important impact on the species distribution and community composition of the North American biota. Species survived these glacial cycles south of the ice sheets and/or in other refugia, such as Beringia. In this study, we assessed, using mitochondrial DNA from three Diptera species, whether flies currently found in Beringian grasslands (1) survived glaciation as disjunct populations in Beringia and in the southern refugium; (2) dispersed northward postglacially from the southern refugium; or (3) arose by a combination of the two. Samples were collected in grasslands in western Canada: Prairies in Alberta and Manitoba; the Peace River region (Alberta); and the southern Yukon Territory. We sequenced two gene regions (658 bp of cytochrome c oxidase subunit I, 510 bp of cytochrome b) from three species of higher Diptera: one with a continuous distribution across grassland regions, and two with disjunct populations between the regions. We used a Bayesian approach to determine population groupings without a priori assumptions and performed analysis of molecular variance (AMOVA) and exact tests of population differentiation (ETPD) to examine their validity. Molecular dating was used to establish divergence times. Results Two geographically structured populations were found for all species: a southern Prairie and Peace River population, and a Yukon population. Although AMOVA did not show significant differentiation between populations, ETPD did. Divergence time between Yukon and southern populations predated the Holocene for two species; the species with an ambiguous divergence time had high haplotype diversity, which could suggest survival in a Beringian refugium. Conclusions Populations of Diptera in Yukon grasslands could have persisted in steppe habitats in Beringia through Pleistocene glaciations. Current populations in the region appear to be a mix of Beringian relict populations and, to a lesser extent, postglacial dispersal northward from southern prairie grasslands. |
format |
Article in Journal/Newspaper |
author |
Solecki, Anna Skevington, Jeffrey Buddle, Christopher Wheeler, Terry |
author_facet |
Solecki, Anna Skevington, Jeffrey Buddle, Christopher Wheeler, Terry |
author_sort |
Solecki, Anna |
title |
Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America |
title_short |
Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America |
title_full |
Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America |
title_fullStr |
Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America |
title_full_unstemmed |
Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America |
title_sort |
phylogeography of higher diptera in glacial and postglacial grasslands in western north america |
publisher |
figshare |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4793544.v1 https://springernature.figshare.com/collections/Phylogeography_of_higher_Diptera_in_glacial_and_postglacial_grasslands_in_western_North_America/4793544/1 |
geographic |
Yukon Canada |
geographic_facet |
Yukon Canada |
genre |
Peace River Beringia Yukon |
genre_facet |
Peace River Beringia Yukon |
op_relation |
https://dx.doi.org/10.1186/s12898-019-0266-4 https://dx.doi.org/10.6084/m9.figshare.c.4793544 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4793544.v1 https://doi.org/10.1186/s12898-019-0266-4 https://doi.org/10.6084/m9.figshare.c.4793544 |
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1766162680965496832 |