Taxonomic status of eight Asian shrike species (Lanius): phylogenetic analysis based on Cyt b and CoI gene sequences
Complete Cyt b gene sequences (1143bp), partial CoI gene sequences (1176bp) and Cyt b gene sequences combined with CoI gene sequences (2319bp) from 22 samples of 8 Lanius species were analysed using the phylogenetic method. Molecular phylogenetic trees were reconstructed using the Maximum Parsimony (MP), Maximum Likelihood (ML), Neighbour-joining (NJ) and MrBayesV3.1 (BI) methods. 228 and 216 nucleotide sites were found to be substituted in the Cyt b gene and CoI gene sequences respectively, accounting for 19.5% and 18.4% of the total nucleotide sites in the Cyt b gene and CoI gene sequences. In the phylogenetic trees, L. minor and L. tigrinus were the first to diverge. Then, a parallel clade diverged: one was clustered with L. isabellinus and L. collurio, which formed a sister group; the other was clustered with L. schach and L. cristatus, which was parallel to the cluster of L. tephronotus and L. bucephalus. Shrikes L. isabellinus, L. collurio, L. schach and L. tephronotus were independent species. The melanistic form of L. schach is a variation group of L. schach.
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Document Type: Research Article
Publication date: December 1, 2007