Genetic variation within and among asexual populations of Porphyra umbilicalis Kützing (Bangiales, Rhodophyta) in the Gulf of Maine, USA
The intertidal marine red alga Porphyra umbilicalis reproduces asexually in the Northwest Atlantic. We looked for population substructure among typical open-coastal and atypical estuarine habitats in seven asexual populations of P. umbilicalis from Maine to New Hampshire using eight expressed sequen...
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ftuninhampshire:oai:scholars.unh.edu:nhaes-1354 2023-05-15T17:45:32+02:00 Genetic variation within and among asexual populations of Porphyra umbilicalis Kützing (Bangiales, Rhodophyta) in the Gulf of Maine, USA Eriksen, Renee L. Green, Lindsay A. Klein, Anita S. 2016-01-13T08:00:00Z application/pdf https://scholars.unh.edu/nhaes/354 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1354&context=nhaes unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/nhaes/354 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1354&context=nhaes ©2016 by De Gruyter New Hampshire Agricultural Experiment Station Publications asexual evolution EST-SSR isolation-by-distance population genetics text 2016 ftuninhampshire 2023-01-30T21:39:11Z The intertidal marine red alga Porphyra umbilicalis reproduces asexually in the Northwest Atlantic. We looked for population substructure among typical open-coastal and atypical estuarine habitats in seven asexual populations of P. umbilicalis from Maine to New Hampshire using eight expressed sequence tag-simple sequence repeats (EST-SSR) or microsatellite loci. Six genotypes were identified, four of which may represent recombinant genotypes from a recombination event that took place locally, or that took place prior to introduction to the Northwest Atlantic. Genotypic diversity was lowest in a population from Wiscasset, Maine, which inhabits an atypical habitat high in the intertidal zone of a bridge piling in an estuarine tidal rapid. Genotypic diversity was highest in the southernmost populations from New Hampshire; we identified two genotypes that were unique to the southernmost populations, and probably represent the most derived genotypes. We looked at genetic distances among populations in similar habitats, and found that populations were more closely related to their closest neighboring population than to a population in a similar habitat. We show that genotypic diversity within P. umbilicalis populations in the Gulf of Maine is relatively high and thus fits a model of high steady-state variation within asexual populations. Text Northwest Atlantic University of New Hampshire: Scholars Repository |
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University of New Hampshire: Scholars Repository |
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topic |
asexual evolution EST-SSR isolation-by-distance population genetics |
spellingShingle |
asexual evolution EST-SSR isolation-by-distance population genetics Eriksen, Renee L. Green, Lindsay A. Klein, Anita S. Genetic variation within and among asexual populations of Porphyra umbilicalis Kützing (Bangiales, Rhodophyta) in the Gulf of Maine, USA |
topic_facet |
asexual evolution EST-SSR isolation-by-distance population genetics |
description |
The intertidal marine red alga Porphyra umbilicalis reproduces asexually in the Northwest Atlantic. We looked for population substructure among typical open-coastal and atypical estuarine habitats in seven asexual populations of P. umbilicalis from Maine to New Hampshire using eight expressed sequence tag-simple sequence repeats (EST-SSR) or microsatellite loci. Six genotypes were identified, four of which may represent recombinant genotypes from a recombination event that took place locally, or that took place prior to introduction to the Northwest Atlantic. Genotypic diversity was lowest in a population from Wiscasset, Maine, which inhabits an atypical habitat high in the intertidal zone of a bridge piling in an estuarine tidal rapid. Genotypic diversity was highest in the southernmost populations from New Hampshire; we identified two genotypes that were unique to the southernmost populations, and probably represent the most derived genotypes. We looked at genetic distances among populations in similar habitats, and found that populations were more closely related to their closest neighboring population than to a population in a similar habitat. We show that genotypic diversity within P. umbilicalis populations in the Gulf of Maine is relatively high and thus fits a model of high steady-state variation within asexual populations. |
format |
Text |
author |
Eriksen, Renee L. Green, Lindsay A. Klein, Anita S. |
author_facet |
Eriksen, Renee L. Green, Lindsay A. Klein, Anita S. |
author_sort |
Eriksen, Renee L. |
title |
Genetic variation within and among asexual populations of Porphyra umbilicalis Kützing (Bangiales, Rhodophyta) in the Gulf of Maine, USA |
title_short |
Genetic variation within and among asexual populations of Porphyra umbilicalis Kützing (Bangiales, Rhodophyta) in the Gulf of Maine, USA |
title_full |
Genetic variation within and among asexual populations of Porphyra umbilicalis Kützing (Bangiales, Rhodophyta) in the Gulf of Maine, USA |
title_fullStr |
Genetic variation within and among asexual populations of Porphyra umbilicalis Kützing (Bangiales, Rhodophyta) in the Gulf of Maine, USA |
title_full_unstemmed |
Genetic variation within and among asexual populations of Porphyra umbilicalis Kützing (Bangiales, Rhodophyta) in the Gulf of Maine, USA |
title_sort |
genetic variation within and among asexual populations of porphyra umbilicalis kützing (bangiales, rhodophyta) in the gulf of maine, usa |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2016 |
url |
https://scholars.unh.edu/nhaes/354 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1354&context=nhaes |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
New Hampshire Agricultural Experiment Station Publications |
op_relation |
https://scholars.unh.edu/nhaes/354 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1354&context=nhaes |
op_rights |
©2016 by De Gruyter |
_version_ |
1766148610508980224 |