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. 2014 Jan 30;9(1):e86999. doi: 10.1371/journal.pone.0086999

Figure 1. Genetic structure of the gene lineages and sub-lineages of the Atlantic flyway duck AIVs.

Figure 1

The numbers of genes in each detected sub-lineage for each of the segments of the 109 Atlantic flyway duck AIVs are shown in the pie charts. AIV genes with ≥95% nucleotide identity by pairwise distance analysis were assigned in a sub-lineage. For the HA genes, sub-lineages 7F-1, 7F-2, 11C-2, 12A-1, 13A-1 and 16D-1 were each detected once and are not labelled. Similarly for the NA genes, sub-lineages 2G-1, 3A-1, 3D-1, 8A-3, 9A-2 and 9A-3 were each detected once and are not labelled.