Marine Biology

, Volume 135, Issue 3, pp 399–405

Molecular population structure of the marine benthic copepod Microarthridion littorale along the southeastern and Gulf coasts of the USA

Authors

  • N. V. Schizas
    • Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
  • G. T. Street
    • Baruch Institute, University of South Carolina, Columbia, South Carolina 29208, USA
  • B. C. Coull
    • Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
  • G. T. Chandler
    • Baruch Institute, University of South Carolina, Columbia, South Carolina 29208, USA
  • J. M. Quattro
    • Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA
Article

DOI: 10.1007/s002270050640

Cite this article as:
Schizas, N., Street, G., Coull, B. et al. Marine Biology (1999) 135: 399. doi:10.1007/s002270050640
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Abstract

Relationships among populations (southeast Atlantic and northern Gulf coast, USA) of a ubiquitous, estuarine, harpacticoid copepod (Microarthridion littorale Poppe) were estimated using sequence data from two loci: one mitochondrial [cytochrome b (Cyt b)] and one nuclear [first internal transcribed spacer of ribosomal DNA (ITS-1)]. Copepods were collected from seven estuaries in 1997/98. Allelic phylogenies based on both genes were generally concordant, and suggested that M. littorale populations are structured over large geographic scales (hundreds of kilometers). Three well-supported groups were found in both gene trees comprising clades of alleles sampled from South Carolina, Florida, and Louisiana. Alleles from the Savannah, Georgia sample formed a monophyletic group using the Cyt b data, but this clade was not distinguishable with comparable ITS-1 data. A single specimen from Louisiana was classified in different clades depending on the locus assayed.

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© Springer-Verlag Berlin Heidelberg 1999