Phylogenetic tree (NJ/ML/BI) of common dolphin cytochrome b haplotypes.

<p>Values above nodes correspond to bootstrap (NJ), aLRT (ML) and posterior probability (BI), respectively, > 50%. Arrows indicate sequences generated in this study (SW Atlantic): specimens coded with RJ, RS ARG4 and ARG18 had the long-beaked morphotype, and the remaining specimens coded with ARG had the short-beaked haplotype (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0140251#pone.0140251.t001" target="_blank">Table 1</a>). Grey circles indicate sequences of the <i>tropicalis</i>-form. The star indicates the haplotype shared by short and long-beaked common dolphins (from almost all localities, including the SW Atlantic) and the putative <i>D</i>. <i>d</i>. <i>ponticus</i> (Black Sea). Black circles mark the long-beaked morphotype from the NE Pacific (please note the paraphyly).