Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima

Joao Neiva, Cristina Paulino, Mette Møller Nielsen, Dorte Krause-Jensen, Gary W. Saunders, Jorge Assis, Ignacio Barbara, Eric Tamigneaux, Licinia Gouveia, Tania Aires, Nuria Marba, Annette Bruhn, Gareth A. Pearson, Ester A. Serrao

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Abstract

Glacial vicariance is regarded as one of the most prevalent drivers of phylogeographic structure and speciation among high-latitude organisms, but direct links between ice advances and range fragmentation have been more difficult to establish in marine than in terrestrial systems. Here we investigate the evolution of largely disjunct (and potentially reproductively isolated) phylogeographic lineages within the amphi-boreal kelp Saccharina latissima s.l. Using molecular data (COI, microsatellites) we confirm that S. latissima comprises also the NE Pacific S. cichorioides complex and is composed of divergent lineages with limited range overlap and genetic admixture. Only a few genetic hybrids were detected throughout a Canadian Arctic/NW Greenland contact zone. The degree of genetic differentiation and sympatric isolation of phylogroups suggest that S. latissima s.l. represents a complex of incipient species. Phylogroup distributions compared with paleo-environmental reconstructions of the cryosphere further suggest that diversification within S. latissima results from chronic glacial isolation in disjunct persistence areas intercalated with ephemeral interglacial poleward expansions and admixture at high-latitude (Arctic) contact zones. This study thus supports a role for glaciations not just in redistributing pre-existing marine lineages but also as a speciation pump across multi-glacial cycles for marine organisms otherwise exhibiting cosmopolite amphi-boreal distributions.
Original languageEnglish
Article number1112
JournalScientific Reports
Volume8
Issue number1
ISSN2045-2322
DOIs
Publication statusPublished - 2018
Externally publishedYes

Cite this

Neiva, Joao ; Paulino, Cristina ; Nielsen, Mette Møller ; Krause-Jensen, Dorte ; Saunders, Gary W. ; Assis, Jorge ; Barbara, Ignacio ; Tamigneaux, Eric ; Gouveia, Licinia ; Aires, Tania ; Marba, Nuria ; Bruhn, Annette ; Pearson, Gareth A. ; Serrao, Ester A. / Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima. In: Scientific Reports. 2018 ; Vol. 8, No. 1.
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title = "Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima",
abstract = "Glacial vicariance is regarded as one of the most prevalent drivers of phylogeographic structure and speciation among high-latitude organisms, but direct links between ice advances and range fragmentation have been more difficult to establish in marine than in terrestrial systems. Here we investigate the evolution of largely disjunct (and potentially reproductively isolated) phylogeographic lineages within the amphi-boreal kelp Saccharina latissima s.l. Using molecular data (COI, microsatellites) we confirm that S. latissima comprises also the NE Pacific S. cichorioides complex and is composed of divergent lineages with limited range overlap and genetic admixture. Only a few genetic hybrids were detected throughout a Canadian Arctic/NW Greenland contact zone. The degree of genetic differentiation and sympatric isolation of phylogroups suggest that S. latissima s.l. represents a complex of incipient species. Phylogroup distributions compared with paleo-environmental reconstructions of the cryosphere further suggest that diversification within S. latissima results from chronic glacial isolation in disjunct persistence areas intercalated with ephemeral interglacial poleward expansions and admixture at high-latitude (Arctic) contact zones. This study thus supports a role for glaciations not just in redistributing pre-existing marine lineages but also as a speciation pump across multi-glacial cycles for marine organisms otherwise exhibiting cosmopolite amphi-boreal distributions.",
author = "Joao Neiva and Cristina Paulino and Nielsen, {Mette M{\o}ller} and Dorte Krause-Jensen and Saunders, {Gary W.} and Jorge Assis and Ignacio Barbara and Eric Tamigneaux and Licinia Gouveia and Tania Aires and Nuria Marba and Annette Bruhn and Pearson, {Gareth A.} and Serrao, {Ester A.}",
year = "2018",
doi = "10.1038/s41598-018-19620-7",
language = "English",
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journal = "Scientific Reports",
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Neiva, J, Paulino, C, Nielsen, MM, Krause-Jensen, D, Saunders, GW, Assis, J, Barbara, I, Tamigneaux, E, Gouveia, L, Aires, T, Marba, N, Bruhn, A, Pearson, GA & Serrao, EA 2018, 'Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima', Scientific Reports, vol. 8, no. 1, 1112. https://doi.org/10.1038/s41598-018-19620-7

Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima. / Neiva, Joao; Paulino, Cristina; Nielsen, Mette Møller; Krause-Jensen, Dorte; Saunders, Gary W.; Assis, Jorge; Barbara, Ignacio; Tamigneaux, Eric; Gouveia, Licinia; Aires, Tania; Marba, Nuria; Bruhn, Annette; Pearson, Gareth A.; Serrao, Ester A.

In: Scientific Reports, Vol. 8, No. 1, 1112, 2018.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima

AU - Neiva, Joao

AU - Paulino, Cristina

AU - Nielsen, Mette Møller

AU - Krause-Jensen, Dorte

AU - Saunders, Gary W.

AU - Assis, Jorge

AU - Barbara, Ignacio

AU - Tamigneaux, Eric

AU - Gouveia, Licinia

AU - Aires, Tania

AU - Marba, Nuria

AU - Bruhn, Annette

AU - Pearson, Gareth A.

AU - Serrao, Ester A.

PY - 2018

Y1 - 2018

N2 - Glacial vicariance is regarded as one of the most prevalent drivers of phylogeographic structure and speciation among high-latitude organisms, but direct links between ice advances and range fragmentation have been more difficult to establish in marine than in terrestrial systems. Here we investigate the evolution of largely disjunct (and potentially reproductively isolated) phylogeographic lineages within the amphi-boreal kelp Saccharina latissima s.l. Using molecular data (COI, microsatellites) we confirm that S. latissima comprises also the NE Pacific S. cichorioides complex and is composed of divergent lineages with limited range overlap and genetic admixture. Only a few genetic hybrids were detected throughout a Canadian Arctic/NW Greenland contact zone. The degree of genetic differentiation and sympatric isolation of phylogroups suggest that S. latissima s.l. represents a complex of incipient species. Phylogroup distributions compared with paleo-environmental reconstructions of the cryosphere further suggest that diversification within S. latissima results from chronic glacial isolation in disjunct persistence areas intercalated with ephemeral interglacial poleward expansions and admixture at high-latitude (Arctic) contact zones. This study thus supports a role for glaciations not just in redistributing pre-existing marine lineages but also as a speciation pump across multi-glacial cycles for marine organisms otherwise exhibiting cosmopolite amphi-boreal distributions.

AB - Glacial vicariance is regarded as one of the most prevalent drivers of phylogeographic structure and speciation among high-latitude organisms, but direct links between ice advances and range fragmentation have been more difficult to establish in marine than in terrestrial systems. Here we investigate the evolution of largely disjunct (and potentially reproductively isolated) phylogeographic lineages within the amphi-boreal kelp Saccharina latissima s.l. Using molecular data (COI, microsatellites) we confirm that S. latissima comprises also the NE Pacific S. cichorioides complex and is composed of divergent lineages with limited range overlap and genetic admixture. Only a few genetic hybrids were detected throughout a Canadian Arctic/NW Greenland contact zone. The degree of genetic differentiation and sympatric isolation of phylogroups suggest that S. latissima s.l. represents a complex of incipient species. Phylogroup distributions compared with paleo-environmental reconstructions of the cryosphere further suggest that diversification within S. latissima results from chronic glacial isolation in disjunct persistence areas intercalated with ephemeral interglacial poleward expansions and admixture at high-latitude (Arctic) contact zones. This study thus supports a role for glaciations not just in redistributing pre-existing marine lineages but also as a speciation pump across multi-glacial cycles for marine organisms otherwise exhibiting cosmopolite amphi-boreal distributions.

U2 - 10.1038/s41598-018-19620-7

DO - 10.1038/s41598-018-19620-7

M3 - Journal article

VL - 8

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 1112

ER -