Phylogenetic tree constructed with tilapia mtDNA CR sequences by PHYLIP program.

<p>A1, B1, C1, C2, D1, E1, F1, G1, H1, I1, I2, J1, K1, L1, L2, and L3 are the representative mtDNA CR sequence from different fish populations. <i>O. niloticu</i> x <i>O. mossambic</i> (O.n x O.m, accession #AY833481), <i>O. mossambic</i> (O.moss, accession #AY833459 and O.moss 2, accession # AF328843), <i>O. urolepis</i> (accession #AF296467), <i>O. aureus</i> (accession #AF328851), <i>O. niloticus</i> (O. nilo, accession #AF485083), <i>S. melanotheron</i> (S. melan accession #AF484717 and S. melan 2 accession # AF296493), and <i>T. rendalli</i> (T. rend, accession #AF328854) are reference tilapia species, and the accession numbers were obtained from the NCBI database.