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Journal of Molecular Evolution

, Volume 46, Issue 2, pp 245–255 | Cite as

Characterization of Novel Minisatellite Repeat Loci in Atlantic Salmon (Salmo salar) and Their Phylogenetic Distribution

  • John L.  Goodier
  • William S.  Davidson

Abstract.

We present here the sequence and characterization of various minisatellite-like tandem repeat loci isolated from the genome of Atlantic salmon (Salmo salar). Their diversity of sequence and lack of core motifs common to minisatellites of other species suggest the presence of numerous and previously unidentified simple sequence repeat families in this salmonid. Evidence for their ubiquity was provided by screening of a salmon genomic library. Southern blot analysis of the phylogenetic distribution of a subset of the minisatellites found one sequence to be pervasive among vertebrates, others present only in Salmoninae or Salmonidae species, and one amplified only in Atlantic salmon. There is evidence for the positioning of microsatellite and minisatellite arrays in close proximity at many loci. Furthermore, one tandem repeat appears to have been inserted into the transposase coding region of a copy of the Tc1 transposon-like element recently identified in salmonids.

Key words: Repetitive DNA — Minisatellites — Microsatellites — Atlantic salmon — Tc1 transposon 

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Copyright information

© Springer-Verlag New York Inc. 1998

Authors and Affiliations

  • John L.  Goodier
    • 1
  • William S.  Davidson
    • 1
  1. 1.Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1B 3X9CA

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