10 Nov '11, 3am

Phylogeny of the Southeast Asian freshwater fish genus Pangio (Cipriniformes; Cobitidae)

is one of the most species-rich of the loach family Cobitidae and widespread across South and Southeast Asia. Its species diversity has never been studied under a clear phylogenetic approach, but four ‘species-groups’ were proposed according to the most obvious morphological characters. We present here phylogenetic analyses of the genus Pangio based on sequence data of the mitochondrial cytochrome b gene, the nuclear recombination-activating gene 1 (RAG 1) and a combined dataset of 109 specimens from 18 morphologically identified species across the whole distribution area of the genus. Our date reveal the existence of three major lineages within Pangio . Two of our major lineages were congruent with formerly proposed species-groups, the remaining two species-groups together formed the third major lineage; herein we refer to the lineages as to anguillaris -group, kuhlii-obl...

Full article: http://rafflesmuseum.wordpress.com/2011/11/10/phylogeny-o...

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