Genetic divergence at the NAD+-dependent malic enzyme locus in Atlantic salmon from Europe and north America

E Verspoor, E McCarthy

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The distribution of genetic variation for NAD+ malic enzyme (ME*) polymorphism in the Atlantic salmon was assessed in both anadromous and resident populations. The analysis revealed a major allelic divergence between North America and Europe. The *80 variant occurred in 39 of 40 North American samples, ranging in frequency from 0 to 0.515. In contrast, it was detected in only three fish from two of the 35 European locations analysed. Eleven fish from two rivers in north-west France had the *110 variant. While heterogeneity among North American populations was significant, no regional differentiation was apparent and anadromous and resident salmon were not found to differ.
Original languageEnglish
Pages (from-to)155-163
Number of pages8
JournalJournal of Fish Biology
Issue number1
Publication statusPublished - Jul 1997


  • Atlantic salmon
  • allozymes
  • population variation

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