Phylogenetic and taxonomic analysis of flatfish species (Teleostei, Pleuronectiformes) inferred from the primary nucleotide sequence of cytochrome oxidase 1 gene (Co-1)

Phylogenetic and taxonomic analysis of flatfish species (Teleostei, Pleuronectiformes) inferred... Seventeen nucleotide sequences of Co-1 gene from 13 Pleuronectiformes species and 2 Perciformes species served as the outgroup were examined. For divergence comparison, the initial stage involved calculation of pairwise p-distances for all investigated sequences. This allowed to evaluate the nucleotide diversity on four phylogenetically different levels: (1) intraspecific, (2) intrageneric, (3) intrafamilial, and (4) intraordinal. The values of p-distances for the Co-1 gene for the four mentioned categories were (1) 0.93 ± 0.73%, (2) 11.72 ± 1.86%, (3) 12.10 ± 1.10%, and (4) 20.20 ± 0.22%, respectively. An increase in the level of genetic divergence along with an enhancement in taxon rank was previously reported for different species, which might be explained by prevalence of geographic speciation model in nature. Phylogenetic trees were constructed using four approaches: maximum parsimony, Bayesian, maximum likelihood, and neighbor-joining. These trees demonstrated similar results confirming the monophyletic origin of the families studied. The examined representatives of the flatfish species and genera were shown to be sufficiently divergent genetically. Russian Journal of Genetics Springer Journals

Phylogenetic and taxonomic analysis of flatfish species (Teleostei, Pleuronectiformes) inferred from the primary nucleotide sequence of cytochrome oxidase 1 gene (Co-1)

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SP MAIK Nauka/Interperiodica
Copyright © 2010 by Pleiades Publishing, Ltd.
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
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