Comparative phylogeography of marine cladocerans

We examined the population genetics of six species of marine cladocerans, using a ~600 bp fragment of the cytochrome oxidase subunit I gene sequence. Phylogenetic analysis revealed significant intraspecific, semi-allopatric phylogenetic breaks in four out of five species belonging to the Podonidae,...

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Bibliographic Details
Published in:Marine biology 2008-07, Vol.155 (1), p.1-10
Main Authors: Durbin, Alan, Hebert, Paul D. N., Cristescu, Melania E. A.
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Anthropogenic factors
Bayesian analysis
Biological and medical sciences
Biomedical and Life Sciences
Cladocera
Crustacea
Freshwater & Marine Ecology
Fundamental and applied biological sciences. Psychology
Genetics
Haplotypes
History
Invertebrates
Life Sciences
Marine
Marine & Freshwater Sciences
Marine biology
Microbiology
Oceanography
Original Paper
Penilia avirostris
Plankton
Podonidae
Population genetics
Sea water ecosystems
Sididae
Synecology
Zoology
Zooplankton
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Summary:We examined the population genetics of six species of marine cladocerans, using a ~600 bp fragment of the cytochrome oxidase subunit I gene sequence. Phylogenetic analysis revealed significant intraspecific, semi-allopatric phylogenetic breaks in four out of five species belonging to the Podonidae, supporting an ancient radiation and oceanic expansion for this group. By contrast, Penilia avirostris (Sididae) displayed no phylogeographic structure across a global sampling, suggesting a recent worldwide expansion. Our results also show a transoceanic distribution of identical or very similar haplotypes in several species of marine Cladocera, which may be interpreted as either natural transport or evidence of recent anthropogenic transport. If the latter is the case, marine cladocerans represent one of the first genetically documented cases of exotic or invasive marine zooplankton, likely an underreported group.
ISSN:0025-3162
1432-1793
DOI:10.1007/s00227-008-0996-x