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Marine Biology

, Volume 135, Issue 3, pp 399–405 | Cite as

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

  • N. V. Schizas
  • G. T. Street
  • B. C. Coull
  • G. T. Chandler
  • J. M. Quattro
Article

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.

Keywords

Sequence Data Population Structure Gene Tree Monophyletic Group Gulf Coast 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • N. V. Schizas
    • 1
  • G. T. Street
    • 2
  • B. C. Coull
    • 1
  • G. T. Chandler
    • 2
  • J. M. Quattro
    • 1
  1. 1.Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USAUS
  2. 2.Baruch Institute, University of South Carolina, Columbia, South Carolina 29208, USAUS

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