Phylogenomic history of enigmatic pygmy perches: implications for biogeography, taxonomy and conservation.

ABSTRACT: Pygmy perches (Percichthyidae) are a group of poorly dispersing freshwater fishes that have a puzzling biogeographic disjunction across southern Australia. Current understanding of pygmy perch phylogenetic relationships suggests past east-west migrations across a vast expanse of now arid habitat in central southern Australia, a region lacking contemporary rivers. Pygmy perches also represent a threatened group with confusing taxonomy and potentially cryptic species diversity. Here, we present the first study of the evolutionary history of pygmy perches based on genome-wide information. Data from 13 991 ddRAD loci and a concatenated sequence of 1 075 734 bp were generated for all currently described and potentially cryptic species. Phylogenetic relationships, biogeographic history and crypt

SUBMITTER: Buckley SJ 

PROVIDER: S-EPMC6030323 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature