Genetic divergence and phylogeny of the Salmoninae based on allozyme dataстатья
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Аннотация:The data on 31-37 allozyme loci in 21 species of nine salmonid genera are used for phylogenetic analysis by seven distance methods and several variants of cladistic analysis. Monophyletic origin for all genera and three sub-families of the Salmonidae is corroborated. The closest phylogenetic relationships are characteristic of Parasalmo and Oncorhynchus (bootstrap support is 88-99%), Brachymystax and Hucho (68-97%), and the clade (Brachymystax+ Hucho)+Salmo (up to 85%). The patterns of phylogenetic relationships in the group Salmo-Parasalmo-Oncorhynchus are analogous to those in the group Parahucho-Hucho-Brachymystax. Thr position of Parahucho in phylogenetic trees of the Salmoninae is extremely unstable, although it is most likely associated with the clade ((Brachymystax+Hucho)+Salmo) or Salvelinus. When using the outgroup analysis, Salvelinus appears as the earliest branch of the Salmoninae tree, whereas if the molecular clock is assumed, the basal position is occupied by Oncorhynchus. However, the latter genus is probably characterized by a substantially increased rate of molecular evolution.(C) 2000 The Fisheries Society of the British Isles.