borderline significantP = 0.060
Isolation by distance tests showed a significant correlation between ATP8 nucleotide distances and distance by sea (r = 0.282, n = 16, P = 0.030), and borderline significant correlations between ATP8 amino acid distances (r = 0.271, n = 16, P = 0.060) and ATP6 nucleotide distances (r = 0.210, n = 16, P = 0.064) with distance by sea.