High connectivity on a global scale in the pelagic wahoo,Acanthocybium solandri(tuna family Scombridae)

The population genetic structure and phylogeography of wahoo, Acanthocybium solandri, were investigated on a global scale with intron six of lactate dehydrogenase-A and mtDNA cytochrome b

T. C. THEISEN; B. W. BOWEN; W. LANIER; J. D. BALDWIN

2008

Scholarcy highlights

  • The population genetic structure and phylogeography of wahoo, Acanthocybium solandri, were investigated on a global scale with intron six of lactate dehydrogenase-A and mtDNA cytochrome b
  • Coalescence analyses yield an estimate of effective female population size at ~816 000, and a population bottleneck ~690 000 years ago
  • Conclusions about population history from our Cytb data set are not concordant with a control region survey, a finding that will require further investigation. This is the first example of a vertebrate with a single globally distributed population, a finding we attribute to extensive dispersal at all life stages
  • The indications of a worldwide stock for wahoo reinforce the mandate for international cooperation on fisheries issues

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