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Marine Biology

, Volume 136, Issue 6, pp 961–968 | Cite as

Phylogeny of Opsanus spp. (Batrachoididae) inferred from multiple mitochondrial-DNA sequences

  • D. W. Freshwater
  • C. Khyn-Hansen
  • S. K. Sarver
  • P. J. Walsh

Abstract

 Species of the toadfish genus Opsanus are increasingly used as experimental organisms in biomedicine and evolutionary/ecological physiology. Despite their importance, little is known of the phylogenetic relationships among Opsanus species. DNA sequence data for portions of the mitochondrial 12S rRNA, cytochrome oxidase I and cytochrome b genes were generated and analyzed from the four recognized Opsanus species and three outgroup taxa. Results of these analyses indicate an evolutionarily rapid divergence of three lineages within the genus. O. beta and O. pardus were resolved within the same lineage, and could not be distinguished with these mitochondrial sequence data. These data and paleoclimatic theory support a hypothesis of speciation based on the formation of allopatric populations during periods of elevated water temperature in the northern Caribbean.

Keywords

Water Temperature Sequence Data Phylogenetic Relationship Cytochrome Oxidase Elevated Water 
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 2000

Authors and Affiliations

  • D. W. Freshwater
    • 1
  • C. Khyn-Hansen
    • 1
  • S. K. Sarver
    • 2
  • P. J. Walsh
    • 3
  1. 1.Center for Marine Science, University of North Carolina at Wilmington, 1 Marvin Moss Lane, Wilmington, North Carolina 28409, USA Fax: 001 (0)910 962 2410 e-mail: freshwaterw@uncwil.eduUS
  2. 2.Department of Biology, Black Hills State University, Spearfish, South Dakota 4779, USAUS
  3. 3.Rosenstiel School of Marine and Atmospheric Science, University of Miami, Rickenbacker Causeway, Miami, Florida 33149, USAUS

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