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Diversification before the most recent glaciation in Balanus glandula.

Publication ,  Journal Article
Wares, JP; Cunningham, CW
Published in: The Biological bulletin
February 2005

A deep genetic cline between southern populations of the barnacle Balanus glandula (from about Monterey Bay southward) and northern populations (from northern California through Alaska) has recently been described. If this pattern is due to historical isolation and genetic drift, we expect it to have formed recently and represent a transient, nonequilibrium state. However, this cline appears to have formed well before the last glacial maximum. Our assays of sequence diversity at a region of mitochondrial cytochrome oxidase I, combined with coalescent estimators of the time of separation for these two regions, suggest that a late Pleistocene event more than 100 thousand years ago may be responsible for the initial separation. This suggests that either strong oceanographic mechanisms or natural selection have maintained the cline, because there has clearly been adequate time for this cline or polymorphism to resolve itself by genetic drift and migration. However, reliance on only a single mitochondrial marker for which the substitution rate has been estimated still limits the resolution of our analysis.

Duke Scholars

Published In

The Biological bulletin

DOI

EISSN

1939-8697

ISSN

0006-3185

Publication Date

February 2005

Volume

208

Issue

1

Start / End Page

60 / 68

Related Subject Headings

  • Thoracica
  • Sequence Analysis, DNA
  • Phylogeny
  • Oregon
  • Ice Cover
  • Genetic Variation
  • Genetic Drift
  • Evolution, Molecular
  • Electron Transport Complex IV
  • Ecosystem
 

Citation

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Wares, J. P., & Cunningham, C. W. (2005). Diversification before the most recent glaciation in Balanus glandula. The Biological Bulletin, 208(1), 60–68. https://doi.org/10.2307/3593101
Wares, John P., and Clifford W. Cunningham. “Diversification before the most recent glaciation in Balanus glandula.The Biological Bulletin 208, no. 1 (February 2005): 60–68. https://doi.org/10.2307/3593101.
Wares JP, Cunningham CW. Diversification before the most recent glaciation in Balanus glandula. The Biological bulletin. 2005 Feb;208(1):60–8.
Wares, John P., and Clifford W. Cunningham. “Diversification before the most recent glaciation in Balanus glandula.The Biological Bulletin, vol. 208, no. 1, Feb. 2005, pp. 60–68. Epmc, doi:10.2307/3593101.
Wares JP, Cunningham CW. Diversification before the most recent glaciation in Balanus glandula. The Biological bulletin. 2005 Feb;208(1):60–68.
Journal cover image

Published In

The Biological bulletin

DOI

EISSN

1939-8697

ISSN

0006-3185

Publication Date

February 2005

Volume

208

Issue

1

Start / End Page

60 / 68

Related Subject Headings

  • Thoracica
  • Sequence Analysis, DNA
  • Phylogeny
  • Oregon
  • Ice Cover
  • Genetic Variation
  • Genetic Drift
  • Evolution, Molecular
  • Electron Transport Complex IV
  • Ecosystem