The Structure of Genetic Diversity in Eelgrass (Zostera marina L.) along the North Pacific and Bering Sea Coasts of Alaska.
Eelgrass (Zostera marina) populations occupying coastal waters of Alaska are separated by a peninsula and island archipelago into two Large Marine Ecosystems (LMEs). From populations in both LMEs, we characterize genetic diversity, population structure, and polarity in gene flow using nuclear micros...
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ftdoajarticles:oai:doaj.org/article:9a302bccc98043ac9193ac762846018a 2023-05-15T14:17:59+02:00 The Structure of Genetic Diversity in Eelgrass (Zostera marina L.) along the North Pacific and Bering Sea Coasts of Alaska. Sandra L Talbot George K Sage Jolene R Rearick Meg C Fowler Raquel Muñiz-Salazar Bethany Baibak Sandy Wyllie-Echeverria Alejandro Cabello-Pasini David H Ward 2016-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0152701 https://doaj.org/article/9a302bccc98043ac9193ac762846018a EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4841600?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0152701 https://doaj.org/article/9a302bccc98043ac9193ac762846018a PLoS ONE, Vol 11, Iss 4, p e0152701 (2016) Medicine R Science Q article 2016 ftdoajarticles https://doi.org/10.1371/journal.pone.0152701 2022-12-31T00:07:27Z Eelgrass (Zostera marina) populations occupying coastal waters of Alaska are separated by a peninsula and island archipelago into two Large Marine Ecosystems (LMEs). From populations in both LMEs, we characterize genetic diversity, population structure, and polarity in gene flow using nuclear microsatellite fragment and chloroplast and nuclear sequence data. An inverse relationship between genetic diversity and latitude was observed (heterozygosity: R2 = 0.738, P < 0.001; allelic richness: R2 = 0.327, P = 0.047), as was significant genetic partitioning across most sampling sites (θ = 0.302, P < 0.0001). Variance in allele frequency was significantly partitioned by region only in cases when a population geographically in the Gulf of Alaska LME (Kinzarof Lagoon) was instead included with populations in the Eastern Bering Sea LME (θp = 0.128-0.172; P < 0.003), suggesting gene flow between the two LMEs in this region. Gene flow among locales was rarely symmetrical, with notable exceptions generally following net coastal ocean current direction. Genetic data failed to support recent proposals that multiple Zostera species (i.e. Z. japonica and Z. angustifolia) are codistributed with Z. marina in Alaska. Comparative analyses also failed to support the hypothesis that eelgrass populations in the North Atlantic derived from eelgrass retained in northeastern Pacific Last Glacial Maximum refugia. These data suggest northeastern Pacific populations are derived from populations expanding northward from temperate populations following climate amelioration at the terminus of the last Pleistocene glaciation. Article in Journal/Newspaper Archipelago Bering Sea North Atlantic Alaska Directory of Open Access Journals: DOAJ Articles Bering Sea Gulf of Alaska Pacific PLOS ONE 11 4 e0152701 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Sandra L Talbot George K Sage Jolene R Rearick Meg C Fowler Raquel Muñiz-Salazar Bethany Baibak Sandy Wyllie-Echeverria Alejandro Cabello-Pasini David H Ward The Structure of Genetic Diversity in Eelgrass (Zostera marina L.) along the North Pacific and Bering Sea Coasts of Alaska. |
topic_facet |
Medicine R Science Q |
description |
Eelgrass (Zostera marina) populations occupying coastal waters of Alaska are separated by a peninsula and island archipelago into two Large Marine Ecosystems (LMEs). From populations in both LMEs, we characterize genetic diversity, population structure, and polarity in gene flow using nuclear microsatellite fragment and chloroplast and nuclear sequence data. An inverse relationship between genetic diversity and latitude was observed (heterozygosity: R2 = 0.738, P < 0.001; allelic richness: R2 = 0.327, P = 0.047), as was significant genetic partitioning across most sampling sites (θ = 0.302, P < 0.0001). Variance in allele frequency was significantly partitioned by region only in cases when a population geographically in the Gulf of Alaska LME (Kinzarof Lagoon) was instead included with populations in the Eastern Bering Sea LME (θp = 0.128-0.172; P < 0.003), suggesting gene flow between the two LMEs in this region. Gene flow among locales was rarely symmetrical, with notable exceptions generally following net coastal ocean current direction. Genetic data failed to support recent proposals that multiple Zostera species (i.e. Z. japonica and Z. angustifolia) are codistributed with Z. marina in Alaska. Comparative analyses also failed to support the hypothesis that eelgrass populations in the North Atlantic derived from eelgrass retained in northeastern Pacific Last Glacial Maximum refugia. These data suggest northeastern Pacific populations are derived from populations expanding northward from temperate populations following climate amelioration at the terminus of the last Pleistocene glaciation. |
format |
Article in Journal/Newspaper |
author |
Sandra L Talbot George K Sage Jolene R Rearick Meg C Fowler Raquel Muñiz-Salazar Bethany Baibak Sandy Wyllie-Echeverria Alejandro Cabello-Pasini David H Ward |
author_facet |
Sandra L Talbot George K Sage Jolene R Rearick Meg C Fowler Raquel Muñiz-Salazar Bethany Baibak Sandy Wyllie-Echeverria Alejandro Cabello-Pasini David H Ward |
author_sort |
Sandra L Talbot |
title |
The Structure of Genetic Diversity in Eelgrass (Zostera marina L.) along the North Pacific and Bering Sea Coasts of Alaska. |
title_short |
The Structure of Genetic Diversity in Eelgrass (Zostera marina L.) along the North Pacific and Bering Sea Coasts of Alaska. |
title_full |
The Structure of Genetic Diversity in Eelgrass (Zostera marina L.) along the North Pacific and Bering Sea Coasts of Alaska. |
title_fullStr |
The Structure of Genetic Diversity in Eelgrass (Zostera marina L.) along the North Pacific and Bering Sea Coasts of Alaska. |
title_full_unstemmed |
The Structure of Genetic Diversity in Eelgrass (Zostera marina L.) along the North Pacific and Bering Sea Coasts of Alaska. |
title_sort |
structure of genetic diversity in eelgrass (zostera marina l.) along the north pacific and bering sea coasts of alaska. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2016 |
url |
https://doi.org/10.1371/journal.pone.0152701 https://doaj.org/article/9a302bccc98043ac9193ac762846018a |
geographic |
Bering Sea Gulf of Alaska Pacific |
geographic_facet |
Bering Sea Gulf of Alaska Pacific |
genre |
Archipelago Bering Sea North Atlantic Alaska |
genre_facet |
Archipelago Bering Sea North Atlantic Alaska |
op_source |
PLoS ONE, Vol 11, Iss 4, p e0152701 (2016) |
op_relation |
http://europepmc.org/articles/PMC4841600?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0152701 https://doaj.org/article/9a302bccc98043ac9193ac762846018a |
op_doi |
https://doi.org/10.1371/journal.pone.0152701 |
container_title |
PLOS ONE |
container_volume |
11 |
container_issue |
4 |
container_start_page |
e0152701 |
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1766289769831071744 |