DNA barcoding of fish fauna from low order streams of Tapajós River basin

PLoS One. 2018 Dec 21;13(12):e0209430. doi: 10.1371/journal.pone.0209430. eCollection 2018.

Abstract

The Amazon basin harbors a megadiverse fish fauna spread in an intricate network of big rivers and small streams. The Amazonian streams are home of many small sized fishes that remains poorly documented. In order to accelerate the scientific knowledge on these important aquatic systems we adopted a modern integrative approach joining morphology and molecular tools to investigate the ichthyofauna assemblages from low order streams situated on the lower Tapajós River Basin. Cytochrome c Oxidase I (COI) DNA barcodes from 252 specimens collected from 10 stream sites were obtained. The combined analysis revealed 29 species, 21 genera and 11 families. Cryptic diversity was evidenced in Knodus sp.1, Aequidens epae and Copella callolepis, in which deep genetic divergence were detected (intraspecific distances: 20.48%, 7.99% and 3.77%, respectively). The putative new species showed closer relationships with their counterparts occurring in the Tapajós-Xingu water drainages.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biodiversity*
  • Brazil
  • Conservation of Natural Resources
  • DNA Barcoding, Taxonomic*
  • Electron Transport Complex IV / genetics
  • Fish Proteins / genetics
  • Fishes / genetics*
  • Phylogeny
  • Rivers

Substances

  • Fish Proteins
  • Electron Transport Complex IV

Grants and funding

MPAS received Mastership from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); KLAG received Scholarship PIBIC/CNPq/UFOPA. This research is part of the Project 09 associated to the Brazilian Barcoding of Life (BrBOL-PRJ09 to JIRP) granted by CNPq. Supplemental funds were provided from CAPES-PROAmazônia (AUXPE-3318/2013 to LRRR). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.