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Luiz Fernando Caserta Tencatt - One of the best experts on this subject based on the ideXlab platform.
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Corydoras fulleri siluriformes callichthyidae a new catfish species from the rio madeira basin peru
Journal of Fish Biology, 2021Co-Authors: Luiz Fernando Caserta Tencatt, S Dos A Santos, H G Evers, Marcelo R. BrittoAbstract:A new long-snouted Corydoras species is described from two tributaries of the rio Manuripe and a tributary of the rio Madre de Dios, rio Madeira basin, Peru. Corydoras fulleri can be distinguished from its congeners by having the following features: (I) branch of the temporal sensory canal at sphenotic, which gives rise to the supraorbital canal, with two pores; (III) upper tooth plate of branchial arch with three series of teeth; (III) area at the corner of the mouth, ventral to the maxillary barbel, with a small fleshy flap; (IV) two moderate-sized dark brown or black blotches on caudal-fin base, one on its lateral portion and another one on its dorsal portion, blotches variably diffuse and/or fused with each other; (V) absence of a dark brown or black stripe transversally crossing the orbit; (VI) a longitudinal dark brown or black stripe on postdorsal region of flank midline, variably fused with the lateral peduncular blotch, some specimens with slender, longitudinally elongated, dark brown or black blotch on flank midline, forming a dash-like marking, stripe or dash-like blotch diffuse in some specimens; and (VII) region around dorsal-fin origin generally lacking dark brown or black blotch, or displaying diffuse blotch. This article is protected by copyright. All rights reserved.
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taxonomic review of the typical long snouted species of Corydoras siluriformes callichthyidae from the rio de la plata basin
Neotropical Ichthyology, 2020Co-Authors: Luiz Fernando Caserta Tencatt, Sergio Alexandre Dos Santos, Marcelo R. BrittoAbstract:Abstract The typical long-snouted species of Corydoras from the rio de La Plata basin were reviewed herein, and the previously proposed synonymy of Corydoras ellisae was corroborated. Corydoras areio and C. aurofrenatus are diagnosed from their congeners, excluding those in lineage 1, by the following features: temporal sensory canal in sphenotic with two pores; upper tooth plate of branchial arch with three or four series of teeth; fleshy flap at mouth corner. Corydoras areio differs from all lineage 1 congeners by having infraorbital 2 with relatively wider posterior laminar expansion; absence of large patches of black pigmentation on the body and absence of conspicuous concentration of dark brown or black chromatophores on anterior portion of the dorsal fin; and presence of blotches on flanks not aligned in longitudinal series. Corydoras aurofrenatus differs from all lineage 1 congeners by having ventral surface of head and trunk densely covered by small, not coalescent platelets; middle portion of flank with two or three dark brown or black patches (below the dorsal-fin, below the adipose-fin base, and on the caudal peduncle base, diffuse and variably present), patches decreasing in size posteriorly; poorly developed fleshy flap at the corner of mouth; anteroventral portion of cleithrum exposed.
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deconstructing an octogenarian misconception reveals the true Corydoras arcuatus elwin 1938 siluriformes callichthyidae and a new Corydoras species from the amazon basin
Journal of Fish Biology, 2019Co-Authors: Luiz Fernando Caserta Tencatt, Flavio C T Lima, Marcelo R. BrittoAbstract:After 80 years of misidentifications, the analysis of the holotype of Corydoras arcuatus plus several non-type specimens attributed to this species allowed its recognition and also revealed a new species, both sharing the following diagnostic features: a long, arched, continuous black stripe that runs parallel to the dorsal profile of the body and extends at least from the anterior margin of the first dorsolateral body plate to the posterior portion of caudal peduncle; absence of transverse black bars on caudal fin; infraorbital 2 in contact with sphenotic and compound pterotic. In addition to these features, C. arcuatus can be distinguished from congeners by having the posterior margin of both dorsal and pectoral spines with laminar serrations directed towards their origins. The new species can be additionally distinguished from its congeners by presenting the following combination of features: ventral surface of trunk entirely or partially covered by relatively large and coalescent platelets; absence of spots or blotches on dorsal fin; and posterior margin of both dorsal and pectoral spines with serrations directed towards their tips. Finally, an identification key to all arc-striped species of Corydoras is provided.
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redescription of Corydoras undulatus regan 1912 siluriformes callichthyidae with comments on the identity of Corydoras latus pearson 1924
PLOS ONE, 2019Co-Authors: Alessandra Bono, Luiz Fernando Caserta Tencatt, Felipe Alonso, Pablo A LehmannAbstract:A redescription of Corydoras undulatus Regan, 1912 is presented. The original description of C. undulatus is very succinct, as is its diagnosis, which is based only on external morphology. Additional information in the scientific literature on this species is scarce. Specimens from the distribution area of this species were analyzed; Parana and Paraguay river basins in Argentina, Uruguay river basin in Argentina, Brazil and Uruguay, and the Laguna dos Patos system in Brazil. Morphological analysis, principal component analysis (PCA), meristic comparison and osteological description were performed. Corydoras undulatus can be distinguished from its congeners mainly by having the following combination of characters: mesethmoid short, with anterior tip short, smaller than 50% of the entire bone length; posterior margin of the pectoral-fin spine with nearly all serrations directed towards origin of spine; pectoral-fin spine with conical serrations; and its peculiar color pattern. The analysis of the material from the different basins did not indicate relevant morphological differences, suggesting that the species presents a wide distribution in La Plata and Laguna dos Patos drainages. The shared geographic distribution between these two systems is also present in other fish species. The current work presents data about the type locality, taxonomy, osteology, distribution and ontogenetic variation of color pattern in C. undulatus. Comments on the identity of a very similar congener, Corydoras latus, will also be provided.
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Photo of preserved specimens of Corydoras undulatus.
2019Co-Authors: Alessandra Bono, Luiz Fernando Caserta Tencatt, Felipe Alonso, Pablo Lehmann A.Abstract:IBIGEO-I 452, 43.1 mm SL, Yapeyu (29°28'14.30"S 56°48'59.41"W): (A) male in lateral view; (B) female in lateral view; (C) pelvic fin and urogenital papillae of male in ventral view; (D) pelvic fin and urogenital papillae of female in ventral view.
Marcelo R. Britto - One of the best experts on this subject based on the ideXlab platform.
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Corydoras fulleri siluriformes callichthyidae a new catfish species from the rio madeira basin peru
Journal of Fish Biology, 2021Co-Authors: Luiz Fernando Caserta Tencatt, S Dos A Santos, H G Evers, Marcelo R. BrittoAbstract:A new long-snouted Corydoras species is described from two tributaries of the rio Manuripe and a tributary of the rio Madre de Dios, rio Madeira basin, Peru. Corydoras fulleri can be distinguished from its congeners by having the following features: (I) branch of the temporal sensory canal at sphenotic, which gives rise to the supraorbital canal, with two pores; (III) upper tooth plate of branchial arch with three series of teeth; (III) area at the corner of the mouth, ventral to the maxillary barbel, with a small fleshy flap; (IV) two moderate-sized dark brown or black blotches on caudal-fin base, one on its lateral portion and another one on its dorsal portion, blotches variably diffuse and/or fused with each other; (V) absence of a dark brown or black stripe transversally crossing the orbit; (VI) a longitudinal dark brown or black stripe on postdorsal region of flank midline, variably fused with the lateral peduncular blotch, some specimens with slender, longitudinally elongated, dark brown or black blotch on flank midline, forming a dash-like marking, stripe or dash-like blotch diffuse in some specimens; and (VII) region around dorsal-fin origin generally lacking dark brown or black blotch, or displaying diffuse blotch. This article is protected by copyright. All rights reserved.
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taxonomic review of the typical long snouted species of Corydoras siluriformes callichthyidae from the rio de la plata basin
Neotropical Ichthyology, 2020Co-Authors: Luiz Fernando Caserta Tencatt, Sergio Alexandre Dos Santos, Marcelo R. BrittoAbstract:Abstract The typical long-snouted species of Corydoras from the rio de La Plata basin were reviewed herein, and the previously proposed synonymy of Corydoras ellisae was corroborated. Corydoras areio and C. aurofrenatus are diagnosed from their congeners, excluding those in lineage 1, by the following features: temporal sensory canal in sphenotic with two pores; upper tooth plate of branchial arch with three or four series of teeth; fleshy flap at mouth corner. Corydoras areio differs from all lineage 1 congeners by having infraorbital 2 with relatively wider posterior laminar expansion; absence of large patches of black pigmentation on the body and absence of conspicuous concentration of dark brown or black chromatophores on anterior portion of the dorsal fin; and presence of blotches on flanks not aligned in longitudinal series. Corydoras aurofrenatus differs from all lineage 1 congeners by having ventral surface of head and trunk densely covered by small, not coalescent platelets; middle portion of flank with two or three dark brown or black patches (below the dorsal-fin, below the adipose-fin base, and on the caudal peduncle base, diffuse and variably present), patches decreasing in size posteriorly; poorly developed fleshy flap at the corner of mouth; anteroventral portion of cleithrum exposed.
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a new Corydoras ostariophysi siluriformes callichthyidae with an unusual sexual dimorphism from the rio juruena basin brazil
Zootaxa, 2020Co-Authors: Flavio C T Lima, Marcelo R. BrittoAbstract:A new Corydoras is described from the rio Juruena system, upper rio Tapajos drainage, Amazon basin, Brazil. The new Corydoras is distinguished from all congeners by presenting a combination of a conspicuous broad vertical dark bar on head, at the level of the eye (mask), an overall light background color without large blotches or stripes on body or fins, the presence of two to four small dark blotches along the midline, and pectoral spine with antrorse serrations on its posterior margin. Males of the new species possess numerous, well-developed odontodes over the lateral portions of head, pectoral girdle, and pectoral spines, an uncommon feature for the genus. The new species is hypothesized to belong, within the genus Corydoras, either to Lineage 6 or Lineage 9.
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deconstructing an octogenarian misconception reveals the true Corydoras arcuatus elwin 1938 siluriformes callichthyidae and a new Corydoras species from the amazon basin
Journal of Fish Biology, 2019Co-Authors: Luiz Fernando Caserta Tencatt, Flavio C T Lima, Marcelo R. BrittoAbstract:After 80 years of misidentifications, the analysis of the holotype of Corydoras arcuatus plus several non-type specimens attributed to this species allowed its recognition and also revealed a new species, both sharing the following diagnostic features: a long, arched, continuous black stripe that runs parallel to the dorsal profile of the body and extends at least from the anterior margin of the first dorsolateral body plate to the posterior portion of caudal peduncle; absence of transverse black bars on caudal fin; infraorbital 2 in contact with sphenotic and compound pterotic. In addition to these features, C. arcuatus can be distinguished from congeners by having the posterior margin of both dorsal and pectoral spines with laminar serrations directed towards their origins. The new species can be additionally distinguished from its congeners by presenting the following combination of features: ventral surface of trunk entirely or partially covered by relatively large and coalescent platelets; absence of spots or blotches on dorsal fin; and posterior margin of both dorsal and pectoral spines with serrations directed towards their tips. Finally, an identification key to all arc-striped species of Corydoras is provided.
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wrapped in flames Corydoras hephaestus a new remarkably colored species from the rio madeira basin teleostei callichthyidae
Zootaxa, 2016Co-Authors: Willian M Ohara, Luiz Fernando Caserta Tencatt, Marcelo R. BrittoAbstract:A new species of Corydoras is described from the upper Rio Machado, Rio Madeira basin, Rondonia State, Brazil. The new species can be distinguished from its congeners by the absence of contact between the posterior process of the parieto-supraoccipital and the nuchal plate; a ventral laminar expansion of the infraorbital 1 conspicuously developed; and the posterior margin of the pectoral-fin spine with serrations along almost of its entire length, only lacking in the distal portion. Additionally, Corydoras hephaestus possesses dorsal and pectoral spines short, and exhibits an unusual color pattern in life. The conservation status of the new species and other endemic species are briefly commented.
Pablo A Lehmann - One of the best experts on this subject based on the ideXlab platform.
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redescription of Corydoras undulatus regan 1912 siluriformes callichthyidae with comments on the identity of Corydoras latus pearson 1924
PLOS ONE, 2019Co-Authors: Alessandra Bono, Luiz Fernando Caserta Tencatt, Felipe Alonso, Pablo A LehmannAbstract:A redescription of Corydoras undulatus Regan, 1912 is presented. The original description of C. undulatus is very succinct, as is its diagnosis, which is based only on external morphology. Additional information in the scientific literature on this species is scarce. Specimens from the distribution area of this species were analyzed; Parana and Paraguay river basins in Argentina, Uruguay river basin in Argentina, Brazil and Uruguay, and the Laguna dos Patos system in Brazil. Morphological analysis, principal component analysis (PCA), meristic comparison and osteological description were performed. Corydoras undulatus can be distinguished from its congeners mainly by having the following combination of characters: mesethmoid short, with anterior tip short, smaller than 50% of the entire bone length; posterior margin of the pectoral-fin spine with nearly all serrations directed towards origin of spine; pectoral-fin spine with conical serrations; and its peculiar color pattern. The analysis of the material from the different basins did not indicate relevant morphological differences, suggesting that the species presents a wide distribution in La Plata and Laguna dos Patos drainages. The shared geographic distribution between these two systems is also present in other fish species. The current work presents data about the type locality, taxonomy, osteology, distribution and ontogenetic variation of color pattern in C. undulatus. Comments on the identity of a very similar congener, Corydoras latus, will also be provided.
Carla Simone Pavanelli - One of the best experts on this subject based on the ideXlab platform.
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revisionary study of the armored catfish Corydoras paleatus jenyns 1842 siluriformes callichthyidae over 180 years after its discovery by darwin with description of a new species
Neotropical Ichthyology, 2016Co-Authors: Luiz Fernando Caserta Tencatt, Marcelo R. Britto, Carla Simone PavanelliAbstract:The taxon known as Corydoras paleatus carries one of the most complex taxonomic histories among Corydoradinae catfishes. A comprehensive review of specimens attributed to that species from several localities was carried out, allowing the clear recognition of C. paleatus and also of a new species previously misidentified as C. paleatus , described herein. Corydoras paleatus can be distinguished from its congeners by presenting the following unique combination of features: perpendicularly directed serrations along entire posterior margin of the pectoral spine; three large black blotches along midline of flank; hyaline or black pectoral fin; and transversal black bars on caudal-fin lobes. Corydoras paleatus is known from the lower rio Parana basin, coastal rivers from Southern Brazil and Uruguay and rio Uruguai basin. The new species can be distinguished from its congeners by having the following unique combination of features: three large black blotches along midline of flank; three nasal pores; mesethmoid short; infraorbital 2 not in contact with compound pterotic; striated black spots from the snout tip to nuchal plate region; markedly rounded snout; and anterior portion of dorsal fin spotted. The new species is known from the upper rio Uruguai basin, from the rivers Canoas, do Peixe and Pelotas.
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redescription of Corydoras guapore knaack 1961 siluriformes callichthyidae a midwater corydoradinae species from the rio guapore basin
Neotropical Ichthyology, 2015Co-Authors: Luiz Fernando Caserta Tencatt, Carla Simone PavanelliAbstract:Corydoras guapore was described from the rio Guapore, Rondonia State, Brazil, based only in three specimens, two of them merely examined alive in an aquarium and apparently not preserved posteriorly. The current location of these two paratypes is uncertain. In the original description, no standard diagnosis was presented and the descriptive information available is scarce and based only in external morphology. Thus, the aim of this study is to provide a redescription of C. guapore based in several topotypes. Corydoras guapore can be distinguished from its congeners by the presence of a short mesethmoid, with the anterior tip poorly developed; posterior margin of pectoral spine with conical serrations directed towards the origin of the spine; and by the lateral portion of caudal peduncle almost entirely blackened. Information about C. guapore ecology and conservation status are also provided.
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a new species of Corydoras lacepede 1803 siluriformes callichthyidae from the upper rio parana basin brazil
Neotropical Ichthyology, 2014Co-Authors: Luiz Fernando Caserta Tencatt, Marcelo R. Britto, Carla Simone PavanelliAbstract:Uma especie nova de Corydoras e descrita de tres tributarios da drenagem do rio Ivai, bacia do alto rio Parana, estado do Parana, Brasil. A especie nova se diferencia da maioria de suas congeneres por apresentar tres poros nasais. Outras caracteristicas diagnosticas sao o menor numero de serrilhas na margem posterior dos espinhos peitoral e dorsal e presenca de quatro a seis manchas pretas pequenas ao longo da linha mediana do flanco. A possivel relacao mimetica entre a especie nova e Characidium heirmostigmata e discutida.
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a new long finned Corydoras lacepede 1803 siluriformes callichthyidae from the lower rio parana basin brazil
Neotropical Ichthyology, 2014Co-Authors: Luiz Fernando Caserta Tencatt, Marcelo R. Britto, Carla Simone PavanelliAbstract:A new species of Corydoras is described from the lower rio Parana basin, just downstream from Itaipu Dam, Brazil, close to Paraguay boundary. The new species can be distinguished from most of its congeners by the infraorbital 2 with a posterior laminar expansion conspicuously reduced, first and second dorsal-fin branched rays conspicuously elongated in males, mesethmoid entirely covered by skin, and by the presence of four to six irregular black or brownish blotches on the midline of the flank. The probable occurrence of the new species in the floodplain of the upper portion of the rio Parana drainage is discussed.
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a new Corydoras lacepede 1803 siluriformes callichthyidae from the rio sao francisco basin brazil
Neotropical Ichthyology, 2013Co-Authors: Luiz Fernando Caserta Tencatt, Marcelo R. Britto, Hector S Veraalcaraz, Carla Simone PavanelliAbstract:A new species of Corydoras is described from the rio Sao Francisco basin in northeastern Brazil, Minas Gerais and Bahia States. The new species is distinguished from most of its congeners by the anterior portion of the infraorbital 1 very large, conspicuously expanded towards the anteroventral margin of the snout and almost entirely covering its lateral margin. Other characters that distinguish the new species are the infraorbital 2 slender on its dorsal tip, contacting only sphenotic and not compound pterotic; and the presence of two laterosensory canals on trunk. A phylogenetic analysis including the new species found it sister-group of C. flaveolus, and both species sister-group of C. paleatus. An identification key to the species of the rio Sao Francisco basin is also provided. Uma especie nova de Corydoras e descrita da bacia do rio Sao Francisco no nordeste do Brasil, estados de Minas Gerais e Bahia. A especie nova se distingue da maioria de suas congeneres por apresentar a porcao anterior do infraorbital 1 muito desenvolvida, expandindo-se conspicuamente em direcao a margem anteroventral do focinho, quase cobrindo completamente sua margem lateral. Outros caracteres que distinguem a especie nova sao o infraorbital 2 estreito em sua extremidade dorsal, em contato apenas com o esfenotico e nao com o pterotico composto, e presenca de somente dois canais latero-sensoriais no tronco. Uma analise filogenetica incluindo a especie nova encontrou-a como grupo-irmao de C. flaveolus, e ambas como grupo-irmao de C. paleatus. Uma chave para identificacao das especies da bacia do rio Sao Francisco tambem e fornecida.
Felipe Alonso - One of the best experts on this subject based on the ideXlab platform.
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redescription of Corydoras undulatus regan 1912 siluriformes callichthyidae with comments on the identity of Corydoras latus pearson 1924
PLOS ONE, 2019Co-Authors: Alessandra Bono, Luiz Fernando Caserta Tencatt, Felipe Alonso, Pablo A LehmannAbstract:A redescription of Corydoras undulatus Regan, 1912 is presented. The original description of C. undulatus is very succinct, as is its diagnosis, which is based only on external morphology. Additional information in the scientific literature on this species is scarce. Specimens from the distribution area of this species were analyzed; Parana and Paraguay river basins in Argentina, Uruguay river basin in Argentina, Brazil and Uruguay, and the Laguna dos Patos system in Brazil. Morphological analysis, principal component analysis (PCA), meristic comparison and osteological description were performed. Corydoras undulatus can be distinguished from its congeners mainly by having the following combination of characters: mesethmoid short, with anterior tip short, smaller than 50% of the entire bone length; posterior margin of the pectoral-fin spine with nearly all serrations directed towards origin of spine; pectoral-fin spine with conical serrations; and its peculiar color pattern. The analysis of the material from the different basins did not indicate relevant morphological differences, suggesting that the species presents a wide distribution in La Plata and Laguna dos Patos drainages. The shared geographic distribution between these two systems is also present in other fish species. The current work presents data about the type locality, taxonomy, osteology, distribution and ontogenetic variation of color pattern in C. undulatus. Comments on the identity of a very similar congener, Corydoras latus, will also be provided.
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Photo of preserved specimens of Corydoras undulatus.
2019Co-Authors: Alessandra Bono, Luiz Fernando Caserta Tencatt, Felipe Alonso, Pablo Lehmann A.Abstract:IBIGEO-I 452, 43.1 mm SL, Yapeyu (29°28'14.30"S 56°48'59.41"W): (A) male in lateral view; (B) female in lateral view; (C) pelvic fin and urogenital papillae of male in ventral view; (D) pelvic fin and urogenital papillae of female in ventral view.
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Dissected bones.
2019Co-Authors: Alessandra Bono, Luiz Fernando Caserta Tencatt, Felipe Alonso, Pablo Lehmann A.Abstract:UNICTIO 2600, 28.3 mm SL: (A) suspensorium and operculum of Corydoras undulatus. Lateral view. Abbreviations: aa = angle-articular, d = dentary, hym = hiomandibula, iop = interoperate, mp = metapterigoid, op = opercle, pop = preopercle, q = quadrate; (B) pectoral girdle of Corydoras undulatus. Ventral view. bpr = pectoral-fin ray, cl = cleithrum, fab = fossa of the abductor muscles of pectoral fin, pecs = pectoral-fin spine, pr = pectoral radials, sco = scapulocoracoid; (C) caudal-fin skeleton of Corydoras undulatus. Lateral view. ccc = compound ural centrum, cfr = principal rays, epu = epural, has = haemal spine, hyp = hypurals and parhypural, hypu = hypurals and uroneural, nes = neural spine, pcr = procurrent rays, ph = parhypural, pu2-3 = preural centrum. Scale bars = 1.0 mm.
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Morphometric data of the holotype and 157 non-type specimens of Corydoras undulatus.
2019Co-Authors: Alessandra Bono, Luiz Fernando Caserta Tencatt, Felipe Alonso, Pablo Lehmann A.Abstract:Morphometric data of the holotype and 157 non-type specimens of Corydoras undulatus.
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Principal Component Analysis (PCA).
2019Co-Authors: Alessandra Bono, Luiz Fernando Caserta Tencatt, Felipe Alonso, Pablo Lehmann A.Abstract:Plots of factor scores of principal component analysis of three populations of Corydoras undulatus. Square from río Paraná basin; circle from Uruguay basin; cross from Laguna dos Patos basin.
