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28 results for “Percina”
FIGURE 1 in A new species of Percina (Perciformes: Percidae) from the Apalachicola River drainage, southeastern United States
FIGURE 1. Distribution of Percina crypta (closed circles), Chattahoochee and Flint River systems, Apalachicola River drainage (inset), USA. Type locality indicated with a star. Circles indicate examined collections of Percina. Percina nigrofasciata is known from all plotted localities; P. crypta has been found only at the localities marked with closed circles.
FIGURE 3 in A new species of Percina (Perciformes: Percidae) from the Apalachicola River drainage, southeastern United States
FIGURE 3. Dorsal saddle pigmentation differences between Percina crypta (left) and Percina nigrofasciata (right); note diagnostic difference in widths of pale inter-saddle spaces between P. crypta (usually less than saddle width) versus P. nigrofasciata (usually greater than saddle width). Illustration by Bricelyn H. Strauch based on photographs of dorsally oriented live specimens from the type locality, and preserved specimens from GMNH 14225 (Lower Flint River system).
FIGURE 2 in A new species of Percina (Perciformes: Percidae) from the Apalachicola River drainage, southeastern United States
FIGURE 2. Nuptial adults of Percina crypta and Percina nigrofasciata. A: P. crypta male, 68 mm SL; B: P. crypta female, 65 mm SL; C: P. nigrofasciata male, 77 mm SL; D: P. nigrofasciata female, 66 mm SL. Chattahoochee River at GA Hwy 17/75 at Nacoochee, White County, Georgia, 5 April 2000; except P. crypta female: Chickasawhatchee Creek (Lower Flint River system) at GA Hwy 37, Baker County, Georgia, 3 April 2000. Photos by NMB.
FIGURE 4 in A new species of Percina (Perciformes: Percidae) from the Apalachicola River drainage, southeastern United States
FIGURE 4. Sheared principal components analysis of morphometric variation among Percina crypta from the upper Chattahoochee River system (open circles), the upper Flint River system (open squares), and the lower Flint River system (open diamonds), and Percina nigrofasciata from the lower Flint River system (filled squares). Males (n=46, A) and females (n=49, B) were analyzed and plotted separately.
Data from: A new species of logperch endemic to Tennessee (Percidae: Etheostomatinae: Percina)
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A new species of bridled darter endemic to the Etowah River system in Georgia (Percidae: Etheostomatinae: Percina)
<p>"alignments" folder contains concatenated ddRAD phylip alignments produced by iPyrad. `mXXp` naming scheme consistent with iPyrad parameter files.</p> <p>"bridledCOB.nex" contains the DNA sequence alignment for the mtDNA gene cytochrome b used in the Bayesian phylogenetic analysis. </p> <p>"bridledCOB.nex.con.tre" summarized posterior tree from Bayesian analysis of the mtDNA cytochrome b data.</p> <p>"bridledNUC.nex" contains the DNA sequence alignment for the 11 nuclear genes used in the Bayesian phylogenetic analysis.</p> <p>"bridledNUC.nex.con.tre" summarized posterior tree from Bayesian analysis of the 11 nuclear genes.</p> <p>"fastqs" folder contains demultiplexed fastq files containing ddRAD reads for each individual.</p> <p>"iPyrad_paramFiles" folder contains assembly parameters for iPyrad. `mXXp` indicates the minimum proportion of samples per locus (`min_samples_locus` iPyrad parameter). For example, `m70p` indicates that each locus is represented by at least 70% of the samples. </p> <p>"P_freemanorum_meristic_data.csv" the merstic data of Percina freemanorum.</p> <p>"P_freemanorum_meristic_specimen_info.csv" information associated with specimens of Percina freemanorum.</p> <p>"P_kusha_meristic_data.csv" the merstic data of Percina kusha.</p> <p>"P_kusha_meristic_specimen_info.csv" information associated with specimens of Percina kusha.</p> <p>"IQTree" folder contains bash script to run IQTree analyses and resulting treefiles. `mXXp` naming scheme consistent with iPyrad parameter files.</p> <p>"VCFs" folder contains bash script to run VCFTools filtering, outgroup file listing outgroup taxa to prune, input VCF file from iPyrad, and filtered VCF files. `Unlinked` indicates that SNPs have been pruned to include only one SNP per ddRAD locus. `mXXp` naming scheme consistent with iPyrad parameter files.<br> </p>
A new species of bridled darter endemic to the Etowah River system in Georgia (Percidae: Etheostomatinae: Percina)
<p><i>Percina freemanorum</i>, the Etowah Bridled Darter, is described as a new species endemic to the Etowah River system in Georgia, specifically in Long Swamp Creek, Amicalola Creek, and the upper portion of the Etowah River. The earliest collection records for <i>Percina freemanorum</i> date to 1948 and in 2007 the species was delimited as populations of <i>Percina kusha</i>. Our investigation into the systematics of <i>Percina kusha</i> is motivated by the uncertain status of populations in the Coosawattee River system and observed morphological disparity in several meristic traits between populations in the Conasauga and Etowah River systems. Our analyses of morphological divergence, nuclear genotypes, and mtDNA haplotype networks confirm the distinctiveness of <i>Percina freemanorum</i>. Morphologically, <i>Percina freemanorum</i> is distinguished from <i>Percina kusha</i> through lower average numbers of lateral line scales (65.4 vs. 72.3); rows of transverse scales (18.0 vs. 21.4); scales around the caudal peduncle (22.1 vs. 24.9); and modally more pectoral fin rays (14 vs. 13). The two species are not reciprocally monophyletic in phylogenetic analysis of mtDNA sequences, but the two species do not share mtDNA haplotypes. Analysis of up to 158,000 RADseq loci resolve each of the two species as reciprocally monophyletic and genomic clustering analysis of single nucleotide polymorphisms identifies two genetic clusters that correspond to the morphologically delimited <i>Percina freemanorum</i> and <i>Percina kusha</i>.</p>
A new species of bridled darter endemic to the Etowah River system in Georgia (Percidae: Etheostomatinae: Percina)
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