Fisheries Science

, Volume 72, Issue 1, pp 202–207 | Cite as

Identification of alfonsino, Beryx mollis and B. splendens collected in Japan, based on the mitochondrial cytochrome b gene, and their comparison with those collected in New Caledonia

  • Seiji Akimoto
  • Shiro Itoi
  • Keijiro Sezaki
  • Philippe Borsa
  • Shugo Watabe


The sequences spanning 307 bp of the mitochondrial cytochrome b gene were determined for 45 sepcimens of Beryx splendens and seven specimens of B. mollis collected in Japan, resulting in identification of 11 and three haplotypes in the two species, respectively. The parsimony tree was constructed from the determined sequences and those registered into the GenBank data-base as species A and W of B. splendens collected in New Caledonia, featuring with two clades. The first clade comprised species W from New Caledonia and B. mollis in the present study, whereas the second one contained species A from New Caledonia and B. splendens in the present study. These results demonstrate a large geographic distribution for both B. splendens and B. mollis. Some of the haplotypes found in Japan were identical to those of New Caledonia for both B. mollis and B. splendens, suggesting levels of gene flow at the trans-oceanic scale.

Key words

alfonsino gene flow Japan mitochondrial DNA New Caledonia species identification 


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Copyright information

© The Japanese Society of Fisheries Science 2006

Authors and Affiliations

  • Seiji Akimoto
    • 1
  • Shiro Itoi
    • 2
  • Keijiro Sezaki
    • 2
  • Philippe Borsa
    • 3
  • Shugo Watabe
    • 2
  1. 1.Kanagawa Prefectural Fisheries Research InstituiteMuira, KanagawaJapan
  2. 2.Laboratory of Aquatic Molecular Biology and Biotechnology, Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyo, TokyoJapan
  3. 3.IRD-Génétique des PopulationsNouméa CedexNew Caledonia

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