12 research outputs found
First DNA barcode reference library for the identification of South American freshwater fish from the lower ParanĂĄ River
Valid fish species identification is essential for biodiversity conservation and fisheries management. Here, we provide a sequence reference library based on mitochondrial cytochrome c oxidase subunit I for a valid identification of 79 freshwater fish species from the
Lower ParanĂĄ River. Neighbour-joining analysis based on K2P genetic distances formed
non-overlapping clusters for almost all species with a 99% bootstrap support each. Identification was successful for 97.8% of species as the minimum genetic distance to the nearest
neighbour exceeded the maximum intraspecific distance in all these cases. A barcoding
gap of 2.5% was apparent for the whole data set with the exception of four cases. Within species distances ranged from 0.00% to 7.59%, while interspecific distances varied
between 4.06% and 19.98%, without considering Odontesthes species with a minimum
genetic distance of 0%. Sequence library validation was performed by applying BOLDs BIN
analysis tool, Poisson Tree Processes model and Automatic Barcode Gap Discovery, along
with a reliable taxonomic assignment by experts. Exhaustive revision of vouchers was performed when a conflicting assignment was detected after sequence analysis and BIN discordance evaluation. Thus, the sequence library presented here can be confidently used as
a benchmark for identification of half of the fish species recorded for the Lower ParanĂĄ
River.Para citar este articulo: DĂaz J, Villanova GV, Brancolini F, del Pazo
F, Posner VM, Grimberg A, et al. (2016) First DNA
Barcode Reference Library for the Identification of
South American Freshwater Fish from the Lower
ParanĂĄ River. PLoS ONE 11(7): e0157419.
doi:10.1371/journal.pone.0157419Fil: DĂaz, Juan. Universidad Nacional de Rosario. Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Instituto de BiologĂa Molecular y Celular de Rosario (IBR -CONICET); Argentina.Fil: Villanova, Gabriela Vanina. Universidad Nacional de Rosario. Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Ărea BiologĂa; Argentina.Fil: Villanova, Gabriela Vanina. Universidad Nacional de Rosario, Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Laboratorio Mixto de BiotecnologĂa AcuĂĄtica (LMBA - UNR - Ministerio de Ciencia, TecnologĂa e InnovaciĂłn productiva de Santa Fe); Argentina.Fil: Brancolini, Florencia. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de LimnologĂa âDr. RaĂșl A. Ringueletâ (ILPLA - CONICET); Argentina.Fil: Del Pazo, Felipe. Universidad Nacional de Rosario. Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Ărea BiologĂa; Argentina.Fil: Posner, Victoria MarĂa. Universidad Nacional de Rosario. Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Ărea BiologĂa; Argentina.Fil: Grimberg, Alexis. Universidad Nacional de Rosario, Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Laboratorio Mixto de BiotecnologĂa AcuĂĄtica (LMBA - UNR - Ministerio de Ciencia, TecnologĂa e InnovaciĂłn productiva de Santa Fe); Argentina.Fil: Arranz, Silvia Eda. Universidad Nacional de Rosario. Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Instituto de BiologĂa Molecular y Celular de Rosario (IBR -CONICET); Argentina.Fil: Arranz, Silvia Eda. Universidad Nacional de Rosario. Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Ărea BiologĂa; Argentina.Fil: Arranz, Silvia Eda. Universidad Nacional de Rosario, Facultad de Ciencias BioquĂmicas y FarmacĂ©uticas. Laboratorio Mixto de BiotecnologĂa AcuĂĄtica (LMBA - UNR - Ministerio de Ciencia, TecnologĂa e InnovaciĂłn productiva de Santa Fe); Argentina
Minimum and maximum genetic distances of Genus with more than one species.
<p>Minimum and maximum genetic distances of Genus with more than one species.</p
The K2P/ML tree of 308 COI sequences for 79 morphologically identified freshwater fish species from Lower ParanĂĄ River in Argentina.
<p>NJ tree was divided into two parts from top to bottom in order from left to right. Bootstrap values >90 for 1000 replicates are shown at each branch. The number of specimens analyzed for each species is shown between brackets. Solid triangles represent clusters of multiple specimens, with height proportional to specimen number and the horizontal width proportional to the genetic variation within each cluster. In gray are shown branches of species with high intraspecific genetic divergence and species with overlapping clusters. Columns next to the tree represent presence of recognition for each clustering method while boxes highlights the differences among methods. Specimens of <i>Brycon orbignyanus</i> with high genetic divergence that were re-classified as <i>B</i>. <i>cf</i>. <i>hilarii</i> are highlighted with "*".</p
Box plots of K2P distances at different taxonomic levels.
<p>(A) within-species variation; (Aâ) within-species variation excluding the four species with high genetic divergence (<i>H</i>. <i>malabaricus</i>, <i>B</i>. <i>orbignyanus</i>, <i>P</i>. <i>motoro</i> and <i>Megalonema argentinum</i>); (B) variation at genus level; (Bâ) variation at genus level excluding genus with low genetic divergence (<i>Odontesthes</i>), (C) variation at Family level. The box comprise 25â75th percentiles of the data set. Whiskers show the lowest and highest values. Points represent outliers. Grey bar indicates âbarcoding gapâ between intra and interspecific distances.</p
K2P- NJ trees of species with high conspecific genetic divergence.
<p>On the left, K2P- NJ trees calculated with specimens of this project. On the right, K2P-NJ trees calculated with all the South American published sequences of each genus. Specimens of this project are shown in bold and clusters indicated with A and B. BIN numbers are shown in brackets. Pictures represent morphology of typical specimens for each branch. Specimen number on collapsed branches is shown in brackets. Bootstrap values >50 for 1000 replicates are shown at each branch. Specimens of <i>Brycon orbignyanus</i> with high genetic divergence that were re-classified as <i>B</i>. <i>cf</i>. <i>hilarii</i> are highlighted with "*". LPR: Lower ParanĂĄ River, UPR: Upper ParanĂĄ River, AMAZ: Amazonas River, SR: Salado River and SFR: Sao Francisco River.</p
Scatterplot showing the overlap of the max intraspecific distances vs. the interspecific (Nearest Neighbour) distances.
<p>Specimens of <i>Brycon orbignyanus</i> with high genetic divergence that were re-classified as <i>B</i>. <i>cf</i>. <i>hilarii</i> are highlighted with "*".</p
3D histogram showing the number of Families, Genus and species by Order.
<p>3D histogram showing the number of Families, Genus and species by Order.</p
Sample sites map.
<p>Map of the Lower Parana River Basin showing the 50 sampling points at sites 1 and 2.</p
List of species with âtrueâ discordance BINs found by the âBIN Discordance Reportâ sequence analysis tool.
<p>Only BINs with species level conflicts are shown.</p