Using Different Methods to Access the Difficult Task of Delimiting Species in a Complex Neotropical Hyperdiverse Group

PloS One
Guilherme J Costa-SilvaClaudio Oliveira

Abstract

The genus Rineloricaria is a Neotropical freshwater fish group with a long and problematic taxonomic history, attributed to the large number of species and the pronounced similarity among them. In the present work, taxonomic information and different molecular approaches were used to identify species boundaries and characterize independent evolutionary units. We analyzed 228 samples assembled in 53 distinct morphospecies. A general mixed yule-coalescent (GMYC) analysis indicated the existence of 70 entities, while BOLD system analyses showed the existence of 56 distinct BINs. When we used a new proposed integrative taxonomy approach, mixing the results obtained by each analysis, we identified 73 OTUs. We suggest that Rineloricaria probably has some complexity in the known species and several species not formally described yet. Our data suggested that other hyperdiverse fish groups with wide distributions can be further split into many new evolutionary taxonomic units.

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Citations

Sep 9, 2016·Genome Génome / Conseil National De Recherches Canada·Silvia Britto BarretoPaulo Roberto Antunes de Mello Affonso
Feb 8, 2019·Genome Génome / Conseil National De Recherches Canada·W Bryan JenningsPaulo A Buckup
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Feb 2, 2018·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Margarida Lima CarvalhoClaudio Oliveira
Nov 10, 2016·PloS One·Christian Andreas Cramer, Leandro Melo de Sousa
Apr 20, 2018·Frontiers in Genetics·Bruno F MeloClaudio Oliveira
Aug 9, 2018·Frontiers in Genetics·Naiara G SalesDaniel C Carvalho

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Methods Mentioned

BETA
PCR

Software Mentioned

DAMBE
Species Limits by Threshold Statistics ( splits
Geneious
Tracer
Modeltest
BEAST
Muscle
R
TreeAnnotator
BOLD

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