Fig 8 - uploaded by Norma J. Salcedo
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Bivariate plot of first dorsal-fin ray length against standard length for Chaetostoinn dnidnlinatos (0) and C. stroumpoulos (A).
Source publication
Two new species of rubbernose armored catfish are described from the upper Huallaga River (650 m elevation) in central Peru. Chaetostoma daidalmatos, new species, is distinguished from all other Chaetostoma species in having a unique combination of: large dark rounded spots on the body and on the dorsal and caudal fins, cleithral width 29.2-30.8 %...
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We describe a new species of heptapterid catfish of the genus Heptapterus from the streams Cuna-Piru, Azul, and Moreno, in the province of Misiones, Argentina. Heptapterus mbya sp. n. is distinguished from all other congeners by dark plumbeous body and a low number of anal-fin rays that are branched (11-12) out of a total number of 15-17 anal fin r...
Citations
... stroumpoulos para Chaetostoma y A. bufonius). Éstos géneros agrupan un complejo críptico de especies, muchas veces con distribución muy restringida (Eigenman & Allen, 1942), por lo que es difícil su identificación a nivel específico, incluso Salcedo (2006) menciona que las especies C. changae, C. stroumpoulos y C. daidalmatos son especies simpátricas que habitan en la cuenca alta del río Huallaga, esto nos hace suponer que nuestras especies de Chaetostoma no identificadas podrían tratarse Tabla 1. Porcentaje de identidad y número de accesión de las secuencias del BLAST que coinciden con las del presente trabajo. El BLAST logró identificar a las especies encontradas del género Hypostomus como H. cochliodon e H. ancistroides, este último fue identificado taxonómicamente en base a caracteres morfológicos como H. hemicochliodon, las diferencias entre la identificación del BLAST y morfológica en la determinación de la especie se debe a que en el GenBank no se encuentra depositada ninguna secuencia de la especie H. hemicochliodon con el gen mitocondrial Citocromo C Oxidasa sub unidad I (COI), es por ello que al momento de realizar la comparación de bases nucleotídicas, el BLAST identifica a nuestro individuo con la secuencia disponible más próxima, en este caso con la especie H. ancistroides. ...
... DOI: https://doi.org/10.24841/fa.v27i1.458 de las mencionadas porSalcedo, 2006. García- Dávila et al. (2015 yMoreira et al. (2017) en sus investigaciones también obtuvieron secuencias del género Ancistrus, no logrando identificarlos a nivel de especie. ...
Fue estimada la diversidad específica de la familia Loricariidae (Siluriformes, Pisces) en las 10 provincias de la región San Martín (Amazonia peruana). Para la caracterización molecular fueron obtenidas las secuencias nucleotídicas del gen mitocondrial Citocromo C Oxidasa sub unidad I (COI). El análisis filogenético de las secuencias confirmó la presencia de 16 especies, distribuidos en nueve géneros. Los valores de la riqueza observada y la riqueza esperada muestran a la provincia Picota como la de mayor riqueza (siete especies), contrariamente la provincia Rioja fue la que presentó la menor riqueza observada (una especie), seguida por la provincia El Dorado (dos especies). El análisis de componente principal (PCA) nos permitió observar la importancia que tiene la especie Chaetostoma sp. 1 en la provincia Rioja, así como Ancistrus sp. 2 para la provincia San Martín. Además nuestros resultados muestran que la especie más abundante en la región San Martín fue Chaetostoma sp. 1, mientras que la de menor abundancia fueron Aphanotorolus emarginatus y Chaetostoma sp. 3. La especie de mayor distribución fue Ancistrus sp. 2 encontrándose en seis provincias, seguida de las especies Chaetostoma stroumpoulos y Chaetostoma sp. 1 quienes estuvieron presentes en cinco provincias diferentes de la región San Martín. Las especies Pterygoplichthys pardalis, Aphanotorulus emarginatus, Chaetostoma sp. 3, Ancistrus sp. 1 y Farlowella smithi estuvieron restrictas cada una a solo una provincia. Las especies comerciales conocidas como carachama parda P. pardalis y carachama negra Hypostomus hemicochliodon fueron poco frecuentes en las capturas (seis y 11 individuos respectivamente), la primera estuvo restricta solo a la provincia de Picota, en tanto que la segunda fue encontrada en las provincias de Bellavista, Huallaga y Picota. Los resultados muestran que si bien la diversidad de especies de loricáridos no es tan diversa como en la selva baja, algunas especies de esta familia están bien distribuidas y son bastante abundantes en esta región.
... At the same time, he maintained C. variolus as a synonym of Ancistrus cirrhosus (Valenciennes, 1836) and confirmed C. sericeus as a species of Chaetostoma. The species C. sericeus was considered as Chaetostoma by many authors Fisch-Muller, 2003;Salcedo, 2006;Ferraris, 2007). But recently, Lujan, et al. (2015b) transferred the species Chaetostomus sericeus to the genus Ancistrus. ...
... Ancistrus alga and A. tectirostris continue as synonyms of A. hoplogenys. Ancistrus malacops, A. variolus and A. sericeus are considered valid species (Fisch- Muller, 2003;Salcedo, 2006;Ferraris, 2007;Lujan, et al. 2015b;Fricke, et al. 2018). ...
To elucidate the species of the genus Ancistrus that inhabit freshwater systems of Ecuador, cataloged lots of the Fish Collection, Museo de la Escuela Politécnica Nacional (MEPN), in Quito, were analyzed. Four species were identified: Ancistrus alga (Cope, 1872), A. malacops (Cope, 1872), A. clementinae Rendahl, 1937, and a new species that herein is described. Ancistrus clementinae inhabits aquatic systems of the Pacific slope, mostly in the Guayas River drainage. The other three species live in freshwater systems that drain to the Amazon River Basin. Ancistrus alga inhabit the northern and central portions of eastern Ecuador. Ancistrus malacops has a broad distribution from north to south, but is absent from the Santiago River. Both species occasionally live in sympatry. The new species is restricted to the Santiago River, in Morona-Santiago province. Each species has unique external morphological features and/or a coloration pattern that allow unambiguous identification, at least of males. This paper provides a description of the new species, and a re-description and images of the other three.
... It may be that these patterns are not found in species that inhabit Colombia, or that our spiny pattern, subpattern C correspond to those types. Apparently, claw and spiny B patterns are the more common ones among the species of Chaetostoma (Rapp Py- Daniel, 1991;Ceas & Page, 1996;Lasso & Provenzano, 1997;Salcedo, 2003Salcedo, , 2006aSalcedo, ,b, 2013Ballen, 2011;Lujan, et al., 2015c;Ballen, et al., 2016). ...
During a survey of loricariid catfishes from Colombia, specimens that match the original description of Chaetostomus setosus Boulenger, 1887 were found. This is the first record after the original description. A redescription and a precise capture locality of the species are provided. The analysis of external characters indicate that the species belongs within the Chaetostoma group; however, specimens of C. setosus possess a mixture of external characters that make generic identification difficult. Tentatively, the species is allocated to the genus Cordylancistrus. External morphology of the known species that belong to the Chaetostoma group (mainly type specimens) was analyzed to find diagnostic characters that may be used for appropriate generic assignment. The results of this analysis are presented herein.
... Only a few species of Chaetostoma present a color pattern consisting of spots on both the head and the body (C. anale, C. daidalmatos, C. lineopunctatum, C. milesi, C. strompoulos, C. trimaculineum and C. vagum, (Lujan et al. 2015a;Salcedo 2006b). Chaetostoma joropo differs from these species except C. daidalmatos by having spots on the body that are larger (in diameter) than the spaces separating them from neighboring spots(vs. ...
... Chaetostoma joropo differs from C. daidalmatos by having spots that are smaller than the orbital diameter (vs. spots larger than orbital diameter, (Salcedo 2006b). Finally, Chaetostoma joropo differs from C. milesi as follows: by having the spots on the head more densely packed together, with the space between spots smaller than spot diameter (vs. ...
Chaetostoma joropo n. sp. is described from the piedmont of the Orinoco River drainage in Colombia. The new species has been long confused with Chaetostoma milesi, a species with similar overall morphology and color pattern that is restricted to the Magdalena-Cauca River Basin. We diagnose the new species on the basis of morphology as well as a precise description of the color pattern. Chaetostoma joropo n. sp. is also easily distinguished from C. formosae the most similar species and other species inhabiting the Orinoco River drainage in Colombia. Data on ontogenetic variation and sexual dimorphism are provided, as well as natural history notes and remarks on the usage of the name Chaetostoma milesi for specimens from both the Orinoco and Magdalena-Cauca drainages. A discussion on the usage of the name Chaetostoma platyrhynchus is also provided given its current instability in the literature.
... centrum at least partially contacting the compound pterotic (character 135, state 0). Several more recent species descriptions and taxonomic revisions have helped to further clarify boundaries of both the genus, clades within the genus, and species (e.g., Ballen, 2011;Salcedo, 2006aSalcedo, , 2006bSalcedo, , 2013. ...
... Chaetostoma bifurcum, new species urn:lsid:zoobank.org:act:9349BF35-726C-43EA-AE4D-C4708BBAAA78 Figure 7; Tables 5, 6 Holotype. Daniel (1991), and Salcedo (2006aSalcedo ( , 2006bSalcedo ( , 2013 Regan, 1904(syntype: BMNH 1898, and Chaetostoma carrioni (Norman, 1935;holotype: BMNH 1933.5.29.1). Interlandmarks (ILM) are the two points between which measurements were taken (from Armbruster, 2003). ...
... Summary of characters variable across Amazon Basin species of Chaetostoma (exclusive of Ch. platyrhynchus). Data summarized from examination of types, comparative material, RappPy- Daniel (1991), andSalcedo (2006aSalcedo ( , 2006bSalcedo ( , 2013. ...
The rubbernose-pleco genus Chaetostoma comprises 47 currently valid and many undescribed species distributed along Atlantic and Pacific slopes of the Andes Mountains from Panama to southern Peru, the Coastal Mountains of Venezuela, and drainages of the Guiana and Brazilian shields. We present a five-locus molecular phylogeny for 21 described and six undescribed species of Chaetostoma spanning the geographic range of the genus. Bayesian and maximum likelihood analyses found Chaetostoma to be well supported as monophyletic and sister to a clade of central and northern Andean genera that have also been hypothesized to be closely related based on morphology (i.e., Andeancistrus, Cordylancistrus, Dolichancistrus, Leptoancistrus, and Transancistrus). Species of Chaetostoma were divided into a trichotomy consisting of: a Pacific Coast, Central American, Magdalena Basin, Lake Valencia, and Guiana Shield clade a western Orinoco, Lake Maracaibo, and Lake Valencia clade and a widespread upper Amazon/Orinoco clade inclusive of a single species on the Brazilian Shield. We also conducted a systematic review of species from the central Andes of northern Peru and Ecuador. Based on our phylogenetic results and direct examination of historical and recently collected type and non-type material, we describe two new species of Chaetostoma (C. bifurcum, from the Pacific Coast, and C. trimaculineum, from the Atlantic Slope), redescribe four species (C. breve, C. carrioni, C. dermorhynchum, and C. microps, all from the Atlantic Slope), transfer four species from Chaetostoma to Ancistrus and find two species to be junior synonyms. © 2015 by the American Society of Ichthyologists and Herpetologists.
Chaetostoma chimu sp. nov. is described from 119 specimens collected in the Andean foothills of the Orinoco River in Colombia. The new species can be distinguished from congeners by a combination of characters, including shape of cheek odontodes, presence of a supraoccipital excrescence, sexual dimorphism characters and colour pattern. In addition, this species can be distinguished from the sympatric and geographically close congeners of the Orinoco that have curved cheek odontodes (i.e., Chaetostoma anale, Chaetostoma formosae and Chaetostoma joropo), by presenting a generally larger orbital diameter and interorbital distance, details of sexual dimorphism and colour pattern. The type locality of specimens collected by Kjell von Sneidern in the mid‐twentieth century in the Colombian Amazon is also clarified. Chaetostoma alternifasciatum and Chaetostoma vagum are proposed as junior synonyms of C. anale. An identification key for the species of Chaetostoma from cis‐Andean drainages in Colombia is provided. The new species is herein categorized as Vulnerable (Vu) B1a (i, iii), following the IUCN criteria.
As a part of an assessment of loricariid catfishes inhabiting the Andes of Colombia, specimens belonging to an interesting new species were identified. The new species is described herein, and it is tentatively included in the genus Cordylancistrus. The new species can be easily distinguished among its congeners by the presence of a unique diagnostic character: a fleshy keel or excrescence, black or dark brown, over the posterior tip of supraoccipital. Specimens of the new species were captured in rivers of the Sierra Nevada de Santa Marta and the Sierra de Perijá that drain to the Magdalena River Basin and Caribbean Sea. The occurrence of one species of Cordylancistrus in the Sierra Nevada de Santa Marta could have interesting biogeographic implications for hypotheses related to the geological history of northwestern corner of South America or to the dispersal or vicariance models used to explain biogeographical patterns of related species in Colombia.
