Range wide genetic differentiation in the bull kelp Nereocystis luetkeana with a seascape genetic focus on the Salish Sea
IntroductionIn temperate regions, one of the most critical determinants of present range-wide genetic diversity was the Pleistocene climate oscillations, the most recent one created by the last glacial maximum (LGM). This study aimed to describe N. luetkeana genetic structure across its entire range...
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ftdoajarticles:oai:doaj.org/article:0e5a979befcd40ebb10df28bb38a623c 2023-12-31T10:22:18+01:00 Range wide genetic differentiation in the bull kelp Nereocystis luetkeana with a seascape genetic focus on the Salish Sea Lily Gierke Nelson C. Coelho Tarang Khangaonkar Tom Mumford Filipe Alberto 2023-11-01T00:00:00Z https://doi.org/10.3389/fmars.2023.1275905 https://doaj.org/article/0e5a979befcd40ebb10df28bb38a623c EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2023.1275905/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2023.1275905 https://doaj.org/article/0e5a979befcd40ebb10df28bb38a623c Frontiers in Marine Science, Vol 10 (2023) kelp forest genetic diversity glacial refugia mating system dispersal microsatellite markers Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2023 ftdoajarticles https://doi.org/10.3389/fmars.2023.1275905 2023-12-03T01:39:32Z IntroductionIn temperate regions, one of the most critical determinants of present range-wide genetic diversity was the Pleistocene climate oscillations, the most recent one created by the last glacial maximum (LGM). This study aimed to describe N. luetkeana genetic structure across its entire range (Alaska to California) and test different models of population connectivity within the Salish Sea. This region was colonized after the LGM and has been under increased disturbance in recent decades.MethodsWe utilized microsatellite markers to study N. luetkeana genetic diversity at 53 sites across its range. Using higher sampling density in the Salish Sea, we employed a seascape genetics approach and tested isolation by hydrodynamic transport and environment models.ResultsAt the species distribution scale, we found four main groups of genetic co-ancestry, Alaska; Washington with Vancouver Island’s outer coast and Juan de Fuca Strait; Washington’s inner Salish Sea; and Oregon with California. The highest allelic richness (AR) levels were found in California, near the trailing range edge, although AR was also high in Alaska. The inner Salish Sea region had the poorest diversity across the species distribution. Nevertheless, a pattern of isolation by hydrodynamic transport and environment was supported in this region.DiscussionThe levels of allelic, private allele richness and genetic differentiation suggest that during the LGM, bull kelp had both northern and southern glacial refugia in the Prince of Wales Island-Haida Gwaii region and Central California, respectively. Genetic diversity in Northern California sites seems resilient to recent disturbances, whereas the low levels of genetic diversity in the inner Salish Sea are concerning. Article in Journal/Newspaper Prince of Wales Island Alaska Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 10 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
kelp forest genetic diversity glacial refugia mating system dispersal microsatellite markers Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
kelp forest genetic diversity glacial refugia mating system dispersal microsatellite markers Science Q General. Including nature conservation geographical distribution QH1-199.5 Lily Gierke Nelson C. Coelho Tarang Khangaonkar Tom Mumford Filipe Alberto Range wide genetic differentiation in the bull kelp Nereocystis luetkeana with a seascape genetic focus on the Salish Sea |
topic_facet |
kelp forest genetic diversity glacial refugia mating system dispersal microsatellite markers Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
IntroductionIn temperate regions, one of the most critical determinants of present range-wide genetic diversity was the Pleistocene climate oscillations, the most recent one created by the last glacial maximum (LGM). This study aimed to describe N. luetkeana genetic structure across its entire range (Alaska to California) and test different models of population connectivity within the Salish Sea. This region was colonized after the LGM and has been under increased disturbance in recent decades.MethodsWe utilized microsatellite markers to study N. luetkeana genetic diversity at 53 sites across its range. Using higher sampling density in the Salish Sea, we employed a seascape genetics approach and tested isolation by hydrodynamic transport and environment models.ResultsAt the species distribution scale, we found four main groups of genetic co-ancestry, Alaska; Washington with Vancouver Island’s outer coast and Juan de Fuca Strait; Washington’s inner Salish Sea; and Oregon with California. The highest allelic richness (AR) levels were found in California, near the trailing range edge, although AR was also high in Alaska. The inner Salish Sea region had the poorest diversity across the species distribution. Nevertheless, a pattern of isolation by hydrodynamic transport and environment was supported in this region.DiscussionThe levels of allelic, private allele richness and genetic differentiation suggest that during the LGM, bull kelp had both northern and southern glacial refugia in the Prince of Wales Island-Haida Gwaii region and Central California, respectively. Genetic diversity in Northern California sites seems resilient to recent disturbances, whereas the low levels of genetic diversity in the inner Salish Sea are concerning. |
format |
Article in Journal/Newspaper |
author |
Lily Gierke Nelson C. Coelho Tarang Khangaonkar Tom Mumford Filipe Alberto |
author_facet |
Lily Gierke Nelson C. Coelho Tarang Khangaonkar Tom Mumford Filipe Alberto |
author_sort |
Lily Gierke |
title |
Range wide genetic differentiation in the bull kelp Nereocystis luetkeana with a seascape genetic focus on the Salish Sea |
title_short |
Range wide genetic differentiation in the bull kelp Nereocystis luetkeana with a seascape genetic focus on the Salish Sea |
title_full |
Range wide genetic differentiation in the bull kelp Nereocystis luetkeana with a seascape genetic focus on the Salish Sea |
title_fullStr |
Range wide genetic differentiation in the bull kelp Nereocystis luetkeana with a seascape genetic focus on the Salish Sea |
title_full_unstemmed |
Range wide genetic differentiation in the bull kelp Nereocystis luetkeana with a seascape genetic focus on the Salish Sea |
title_sort |
range wide genetic differentiation in the bull kelp nereocystis luetkeana with a seascape genetic focus on the salish sea |
publisher |
Frontiers Media S.A. |
publishDate |
2023 |
url |
https://doi.org/10.3389/fmars.2023.1275905 https://doaj.org/article/0e5a979befcd40ebb10df28bb38a623c |
genre |
Prince of Wales Island Alaska |
genre_facet |
Prince of Wales Island Alaska |
op_source |
Frontiers in Marine Science, Vol 10 (2023) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2023.1275905/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2023.1275905 https://doaj.org/article/0e5a979befcd40ebb10df28bb38a623c |
op_doi |
https://doi.org/10.3389/fmars.2023.1275905 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
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1786833392064528384 |