Figure 2

Neighbouring-joining tree based on Nei’s genetic distances D_A generated from nuclear microsatellite allele frequencies of Scyliorhinus canicula sample collections with bootstrap values estimated from 1000 replications (a). Genetic clustering of Scyliorhinus canicula sample collections based on 12 microsatellite loci for the best K=2, generated from STRUCTURE analysis. The collections are separated by black vertical lines. Each individual is represented by a narrow vertical column broken into K=2 coloured segments with lengths proportional to each of the inferred K clusters (b). The sample collection codes are explained in Table 1.