PCA plot.

<p>Principal Component Analysis (PCA) based on both Jin-Nei and Kimura distances reported in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0153631#pone.0153631.t004" target="_blank">Table 4</a>. Colors refer to different families: blue, Unionidae with the exception of <i>Hyriopsis</i> spp. (brown; see text for details); Indian red, Mytilidae; green, Veneridae. AnAn, <i>Anodonta anatina</i>; HyCu, <i>Hyriopsis cumingii</i>; HySc, <i>Hyriopsis schlegelii</i>; MeLa, <i>Meretrix lamarckii</i>; MuSe, <i>Musculista senhousia</i>; MyCa, <i>Mytilus californianus</i>; MyEd, <i>Mytilus edulis</i>; MyGa, <i>Mytilus galloprovincialis</i>; MyTr, <i>Mytilus trossulus</i>; PyGr, <i>Pyganodon grandis</i>; QuQu; <i>Quadrula quadrula</i>; RuPh, <i>Ruditapes philippinarum</i>; SoCa, <i>Solenaia carinatus</i>; UtPe; <i>Utterbackia peninsularis</i>; VeEl, <i>Venustaconcha ellipsiformis</i>.