Phylogenetic tree of the barcoding region of 263 cytochrome <i>c</i> oxidase subunit I (<i>COI</i>) gene sequences of the genus <i>Paramecium</i> and genera <i>Lembadion</i> and, <i>Tetrahymena</i> inferred by Bayesian Inference (BI) analysis based on dataset <i>COI</i>-f.
<p>The branches are shaded according to subgenera <i>Chloroparamecium</i>, <i>Helianter</i>, <i>Cypriostomum</i>, <i>Paramecium</i>, proposed by Fokin <i>et al. </i><a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0077044#pone.0077044-Fokin1" target="_blank">[28]</a>. The scale bar corresponds to 30 substitutions per 100 nucleotide positions. For <i>P. bursaria</i>, Clade H includes populations sampled from Australia, Germany, and Poland; Clade I and J include populations sampled from Russia and Poland, Germany, Ukraine, and Canada; Clade K includes populations sampled from China (Pb1C1-4 & Pb2C &Pb3C2-3), Austria, Japan, and Italy; Clade L includes populations sampled from China (Pb3C1), Russia, and Japan (see details in Fig. S2 in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0077044#pone.0077044.s003" target="_blank">file S3</a>). For <i>P.caudatum</i>, Clade A includes populations sampled from China (PcC1-4 and AM072774), Australia, USA, and Brazil while members of Clade B were sampled from Germany, Italy, Russia, UK, Norway, Hungary, Slovenia, and Austria (see details in Fig. S3 in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0077044#pone.0077044.s003" target="_blank">file S3</a>). Inconsistent sequences (FJ905146, FJ905147, EU056259, EU056258, DQ837977, DQ837982, JF741258, JF304183) are marked in red <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0077044#pone.0077044-Tarcz1" target="_blank">[14]</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0077044#pone.0077044-Barth3" target="_blank">[42]</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0077044#pone.0077044-StrderKypke2" target="_blank">[47]</a>.</p
