Phylogeography of the seaweed Ishige okamurae (Phaeophyceae)

Evidence for glacial refugia in the northwest Pacific region

Kyung Min Lee, Eun Chan Yang, James A. Coyer, Giuseppe C. Zuccarello, Wei Lung Wang, Chang Geun Choi, Sung Min Boo

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Although benthic marine algae are essential components of marine coastal systems that have been influenced profoundly by past and present climate change, our knowledge of seaweed phylogeography is limited. The brown alga Ishige okamurae Yendo occurs in the northwest Pacific, where it occupies a characteristic belt in the exposed intertidal zone. To understand the patterns of genetic diversity and the evolutionary history of this species, we analyzed mitochondrial cox3 from 14 populations (221 individuals) throughout its range. The 17 haplotypes found in this study formed five distinct clades, indicating significant genetic structure. The high differentiation and number of unique (private) haplotypes may result from the recolonization of the species from glacial refugia. Three putative refugia, each with high genetic diversity, were identified: southern Korea (including Jeju Island), northern Taiwan, and central Pacific Japan. Recolonization of I. okamurae was probably determined by ocean currents and changes in sea level during the last glacial period.

Original languageEnglish
Pages (from-to)1021-1028
Number of pages8
JournalMarine Biology
Volume159
Issue number5
DOIs
Publication statusPublished - 2012 May 1

Fingerprint

Phaeophyceae
phylogeography
recolonization
seaweed
refugium
refuge habitats
algae
macroalgae
haplotypes
genetic variation
water currents
brown alga
littoral zone
Last Glacial
intertidal environment
genetic structure
sea level
Korean Peninsula
Taiwan
alga

All Science Journal Classification (ASJC) codes

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

Lee, Kyung Min ; Yang, Eun Chan ; Coyer, James A. ; Zuccarello, Giuseppe C. ; Wang, Wei Lung ; Choi, Chang Geun ; Boo, Sung Min. / Phylogeography of the seaweed Ishige okamurae (Phaeophyceae) : Evidence for glacial refugia in the northwest Pacific region. In: Marine Biology. 2012 ; Vol. 159, No. 5. pp. 1021-1028.
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Phylogeography of the seaweed Ishige okamurae (Phaeophyceae) : Evidence for glacial refugia in the northwest Pacific region. / Lee, Kyung Min; Yang, Eun Chan; Coyer, James A.; Zuccarello, Giuseppe C.; Wang, Wei Lung; Choi, Chang Geun; Boo, Sung Min.

In: Marine Biology, Vol. 159, No. 5, 01.05.2012, p. 1021-1028.

Research output: Contribution to journalArticle

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