A molecular assessment of species diversity in Tympanopleura and Ageneiosus catfishes (Auchenipteridae: Siluriformes)

摘要: In order to test the congruence of genetic data morphologically defined Neotropical catfish genera Tympanopleura and Ageneiosus explore species diversity, we generated 17 DNA barcodes from five six 12 13 Ageneiosus. To discriminate limits between species, an automatic barcode gap discovery (ABGD), a generalised mixed yule-coalescent model (GYMC) fixed distance thresholds Kimura two-parameter (K2P; 3%) were used putative barcodes. The ABGD, GMYC K2P methods agreed by each generating clusters: in (five nominal plus one undescribed species) seven These clusters corresponded broadly described except case ucayalensis group (A. akamai, A. dentatus, intrusus, ucayalensis, uranophthalmus vittatus). Haplotype sharing low divergences may have prevented molecular distinguishing these species. We hypothesise that this is result recent radiation sympatric distributed throughout Amazon Basin. One new was also supported data. results taken together highlight utility such as barcoding understanding patterns diversification across large geographic areas recognising overlooked diversity.