Data from: Genetic and morphometric evidence for the recognition of several recently synonymized species of trans-Andean Rhamdia (Pisces: Siluriformes: Heptapteridae)
Hernández, Carmen Liliana, 1 Department of Biological Sciences, University of Southern Mississippi, 118 College Drive #5018, Ha
Ortega-Lara, Armando, 2 Grupo de Investigación en Peces Neotropicales, Fundación para la Investigación y el Desarrollo Sos
Sánchez-Gárces, Gian Carlo, 2 Grupo de Investigación en Peces Neotropicales, Fundación para la Investigación y el Desarrollo Sos
Alford, Mac H., 1 Department of Biological Sciences, University of Southern Mississippi, 118 College Drive #5018, Ha
Published Apr 21, 2016 on Dryad.
Cite this dataset
Hernández, Carmen Liliana; Ortega-Lara, Armando; Sánchez-Gárces, Gian Carlo; Alford, Mac H. (2016). Data from: Genetic and morphometric evidence for the recognition of several recently synonymized species of trans-Andean Rhamdia (Pisces: Siluriformes: Heptapteridae) [Dataset]. Dryad. https://doi.org/10.5061/dryad.vq74k
A recent taxonomic revision of the Neotropical catfish genus Rhamdia (Pisces: Siluriformes: Heptapteridae) reduced a number of described species to synonymy, especially under a broadly circumscribed R. quelen. Evidence is presented here from DNA sequence data, external morphology, and morphometrics that argues for the recognition of R. guatemalensis in Central and northern South America and R. saijaensis and R. cinerascens in the Pacific drainages of Colombia and Ecuador, respectively. The DNA data indicate that all trans-Andean samples form a monophyletic group, within which there are separate clades corresponding to R. laticauda and the synonymized R. guatemalensis, R. saijaensis, and R. cinerascens. The morphometric data substantiate the phylogenetic groupings, and in external morphology, each putative species has diagnostic characters. Rhamdia guatemalensis is characterized by insertion of the adipose fin closer to the dorsal fin than to the caudal fin and presence of a conspicuous lateral longitudinal dark band; R. saijaensis is characterized by a small head with head length 20.8–23.4% of standard length and by lacking a lateral longitudinal band; and R. cinerascens is characterized by a large head with head length 25.8–30.1% of standard length, base of the adipose fin 30.3–33.3% of standard length, outer mental barbels extending to the base of the pectoral rays, and presence of a faint lateral longitudinal band. The external morphological differences and phylogenetic relationships indicate that these groups are both recognizable and represent independent lineages, which argue for their recognition as species.
Rhamdia Parsimony Matrix
WinClada (.winc) file of 117 Rhamdia individuals for parsimony analysis
Rhamdia Parsimony or Maximum Likelihood Nexus File
A nexus (.nxs, .nex) file for use in parsimony and maximum likelihood analyses
Rhamdia Nexus File with Bayesian Analysis Block
Nexus (.nxs, .nex) file for Bayesian analysis using MrBayes. Bayesian block included.
Rhamdia raw morphometrics data
Rhamdia raw morphometrics data in Excel (.xlsx) format
Appendix 1. Parsimony analysis of Rhamdia mt cytb data
Parsimony analysis of Rhamdia mitochondrial cyt b data. Strict consensus with bootstrap support values.
Appendix 2. Most likely tree from ML analysis of Rhamdia mt cytb data
Maximum likelihood analysis of Rhamdia mitochondrial cyt b data. Most likely tree (highest –ln score) of four replications with bootstrap support values. Three of the four replicates resulted in the same topology, best tree with –ln likelihood = –9147.8963.
Appendix 3. Divergence times estimates of Rhamdia species.
Divergence time estimates chronogram from BEAST for several Rhamdia species. Values on branches represent posterior probabilities. Bars correspond to 95% HPD intervals. Stars show calibration points.