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PMID: 15964980 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Rapid evolutionary radiation of marine zooplankton in peripheral environments.

Proceedings of the National Academy of Sciences of the United States of America ·Vol. 102 ·No. 26 ·2005-06-28 ·Pages 9235-40

Dawson MN, Hamner WM

Abstract

Populations of jellyfish, Mastigias sp., landlocked in tropical marine lakes during the Holocene, show extreme genetic isolation (0.74 < or = phiST < or = 1.00), founder effects (genetic diversity: 0.000 < or = pi < or = 0.001), rapid morphological evolution, and behavioral adaptation. These results demonstrate incipient speciation in what we propose may be modern analogues of Plio-Pleistocene populations isolated in ocean basins by glacially lowered sea level and counterparts to modern marine populations isolated on archipelagos and other distant shores. Geographic isolation in novel environments, even if geologically brief, may contribute much to marine biodiversity because evolutionary rates in marine plankton can rival the most rapid speciation seen for limnetic species, such as cichlids and sticklebacks. Marine lakes present situations rare in their clarity for studying evolution in marine taxa.

MeSH Terms
Animals Biodiversity Biological Evolution Electron Transport Complex IV/genetics Environment Evolution, Molecular Founder Effect Genetic Variation Genetics, Population Geography Mitochondria/metabolism Models, Molecular Models, Statistical Molecular Sequence Data Oceans and Seas Palau Phylogeny Zooplankton/genetics,physiology
Chemicals
Electron Transport Complex IV
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Dawson Michael N
Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, New South Wales 2052, Australia.
Hamner William M
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
DOI
10.1073/pnas.0503635102
Published
2005-06-28
Epub
2005-00-17
Pages
9235-40
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC1166623
Subset
IM
Databases
GENBANK
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External Links
PubMed source DOI: 10.1073/pnas.0503635102 PMC Full Text View journal details
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