Consensus phylogenetic tree of actinopterygian leptins.

<p>Phylogenetic analysis of 34 actinopterygian leptin amino acid sequences was performed using the Maximum Likelihood method, with 1,000 boostrap replicates (for the alignment and references of sequences see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0126008#pone.0126008.s020" target="_blank">S3 Fig</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0126008#pone.0126008.s018" target="_blank">S1 Table</a>). The number shown at each branch node indicates in percentage the boostrap value. Only values above 50% are indicated. The tree was rooted using mammalian (human and bull) leptin sequences as outgroup. Teleost duplicated leptin groups are indicated in yellow (“A” type) and in green (“B” type).