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| Registros recuperados: 1.204 | |
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| Malanski,Evandro; Sarmento-Soares,Luisa Maria; Silva-Malanski,Ana Cecilia Gomes; Lopes,Maridiesse Morais; Ingenito,Leonardo Ferreira da Silva; Buckup,Paulo Andreas. |
| ABSTRACT A new species of Characidium from southeastern Brazil is described based on morphological and molecular evidence from specimens collected between the rio Jucuruçu and rio Doce basins. The new species belongs to a group of species within Characidium with an unscaled area in the isthmus and is distinguished from these species, except C. alipioi, C. fasciatum, C. hasemani, and C. kamakan, by the greater distance (greater than 10% SL) and presence of 5-7 scales between the anus and the anal fin, and presence of 14 series of scales around the caudal peduncle. The species is distinguished from C. alipioi by having 4 series of scales above the lateral line (vs. 5 series) and greater distance between the anus and the anal fin; from C. fasciatum and C.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bahia; DNA barcode; Espírito Santo; Rapids; South American darter. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200212 |
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| Zanata,Angela M.; Camelier,Priscila. |
| Characidium samurai, a species of the family Crenuchidae apparently endemic to rio das Almas and rio Vermelho basins, Bahia, Brazil, is described. The new species is readily distinguishable from its congeners, except C. lanei, by having a dark lateral band along the head and body that is particularly broad from the rear of the head to the end of the caudal peduncle (1.5 or 2 scales wide) and by the absence of dark bars or blotches on the ventral half of the body. Characidium samurai differs from C. laneiby having the lateral band with straight borders overall (vs.lateral band with somewhat irregular borders due to blotches extending dorsally or ventrally), anal fin ii,7-8 (vs. ii,6), and 4 horizontal scale rows above the lateral line and 4 below (vs. 5/3).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Characidiinae; Characidium bahiense; Freshwater fish; Neotropical region; Taxonomy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200333 |
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| Melo,Marcelo R. S.; Buckup,Paulo A.; Oyakawa,Osvaldo T.. |
| ABSTRACT A new species of Characidium is described based on specimens obtained from the highland streams of the Serra do Mar, Atlantic Forest Biome, in Paraná State, Southern Brazil. The new species is possibly a member member of the C. lauroi group, which is diagnosed by having the isthmus unscaled, bars poorly marked, and spots on sides of body, and is composed by four additional species: C. japuhybense ; C. lauroi ; C. oiticicai ; and C. schubarti . The new species differs from its congeners with naked isthmus, except C. helmeri , by having 15-18 principal caudal-fin rays; and 10-12 pectoral-fin rays; and from C. helmeri , by having a slender body, tip of pectoral fin not reaching origin of pelvic fin, tip of pelvic fin not reaching beyond anus,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Characidium lauroi group; Mata Atlântica; Rio Iguaçu; Rio Ribeira de Iguape; South American Darters. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000300210 |
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| Pinna,Mario de; Abrahão,Vitor; Reis,Vinicius; Zanata,Angela. |
| ABSTRACT A new species of the Copionodontinae genus Copionodon is described from the riacho do Mosquito, tributary to rio Santo Antônio, rio Paraguaçu basin in the Diamantina Plateau, Bahia State, northeastern Brazil. This species represents the northernmost occurrence of the subfamily yet known and is a relictual population, apparently restricted to an underground sector of the stream and its immediate downstream exit. The new species can be readily recognized by the combination of the presence of opercular odontodes, the mostly uniform coloration of the body, and the lack of a free orbital rim. Despite several troglomorphic traits shared between the new species and Glaphyropoma spinosum, the two species are not closest relatives and all such similarities... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chapada Diamantina; Endemism; Rio Paraguaçu; Systematics; Taxonomy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400214 |
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| Terán,Guillermo E.; Ballen,Gustavo A.; Alonso,Felipe; Aguilera,Gastón; Mirande,J. Marcos. |
| ABSTRACT A new species of Farlowella is described from the Bermejo River basin, in Salta and Jujuy provinces, northwestern Argentina. The new species belongs to the Farlowella nattereri species group. The new species is diagnosed by the following combination of characters: marbled rostrum, five rows of lateral plates series, relatively short snout (snout-mouth length less than 50.0% of head length), complete half-moon shaped spot on caudal fin, and short predorsal distance (37.8-41.8% of standard length). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armored catfish; Chaco Ecoregion; Endemic species; Loricariinae; Taxonomy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200206 |
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| Ballen,Gustavo A.; Pastana,Murilo N. L.; Peixoto,Luiz A. W.. |
| ABSTRACT A new species of Farlowella is described from eighteen specimens collected in the upper rio Xingu basin, Mato Grosso State, Brazil. The new species is a member of the Farlowella nattereri species-group and can be distinguished from other members of the group, with exception of Farlowella jauruensis , by exhibiting a proportionally shorter snout. The new species is distinguished from F. jauruensis by differences on the cleithrum and plate morphology, by counts of pelvic and caudal-fin rays, and by the color pattern of the snout. The discovery of new lots of F. jauruensis , a species so far known only from the holotype, is also herein reported. This discovery represents a considerable expansion of the geographic distribution and of the number of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Brazilian shield; Loricariinae; Neotropical fishes; Ostariophysi. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000300215 |
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| Rocha,Marcelo Salles; Oliveira,Renildo Ribeiro de; Py-Daniel,Lúcia H. Rapp. |
| A new species of Gladioglanis is described from a single locality on rio Aripuanã, rio Madeira basin, and can be distinguished from its congeners by the following characters: dorsal-fin spine and spinelet absent, first dorsal-fin ray flexible, unbranched, followed by five branched dorsal-fin rays, pectoral-fin spine short and with few (5 anterior-side, 4 posterior-side) dentations, 22-25 anal-fin rays, round profile of the head in dorsal view, first dorsal-fin pterygiophore in contact with the neural spine of eighth vertebrae, 13 caudal-fin rays in both upper and lower lobes, and 60 total vertebrae. Some of its characters are discussed below and compared among the species of a small clade within Heptapteridae proposed by Bockmann (1998). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Catfish; Taxonomy; Gladioglanis conquistador; Gladioglanis machadoi. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300017 |
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| Bichuette,Maria Elina; Pinna,Mario César Cardoso de; Trajano,Eleonora. |
| A new species of the rare copionodontine genus Glaphyropoma is described from subterranean waters in the Diamantina Plateau, Bahia State, central northeastern Brazil. This is the first troglomorphic species in the subfamily Copionodontinae. It is distinguished from all other copionodontines by the presence of opercular odontodes, and further distinguished from its only congener, G. rodriguesi, by the reduction of dark integumentary pigmentation. The new species shares the single synapomorphy previously proposed for Glaphyropoma, the marked narrowing of the first hypobranchial and indirect character evidence also supports its inclusion in the genus. The presence of opercular odontodes in the new species, in combination with a reviewed hypothesis of sister... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Cave fishes; Systematics; Neotropics; Taxonomy. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300002 |
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| González-Bergonzoni,Iván; Loureiro,Marcelo; Oviedo,Sebastián. |
| The new cichlid species Gymnogeophagus tiraparae is described from the río Negro and río Tacuarí basins (Uruguay). The new species is distinguished from other Gymnogeophagus species by the unique presence of the following characters: adipose hump on head deeper than the dorsal-fin upper border, adipose hump with anterior profile vertical, extending from the upper lip to the dorsal-fin origin, absence of transversal bands on body; two horizontal series of moderately elongated light blue dots between dorsal fin spines, and a series of light blue stripes between soft rays, sometimes merged with the second series of elongated dots, always with a red ground color between series of dots, and caudal fin with dots vertically aligned on its distal border. According... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichlidae; Systematics; Neotropical. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100003 |
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| Loureiro,Marcelo; Zarucki,Matías; Malabarba,Luiz R.; González-Bergonzoni,Iván. |
| ABSTRACT We describe a new species of a substrate-brooding Gymnogeophagus , based on coloration characters. The new species can be distinguished from the remaining substrate-brooding species in the genus by the unique pigmentation of the dorsal fin which consists of light blue, diagonal stripes over a red background in the spiny section and a combination of round, elliptic, and elongated bright blue spots over a red background in the soft section. It can be further distinguished from all other species of Gymnogeophagus by the following combination of characters: a discontinuous bright blue band above the upper lateral line in the humeral area, light blue roundish spots over a red to orange background on the anal fin, and conspicuous bright blue horizontal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichlidae; Gymnogeophagus meridionalis; Gymnogeophagus rhabdotus; Substrate brooding; Systematics. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100215 |
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| Maxime,Emmanuel L.; Albert,James S.. |
| Herein Gymnotus chaviro is described from the Alto Yuruá (upper rio Juruá) of southeastern Peru, where it is locally abundant in terra firme streams and floodplain oxbow lakes, and occurs sympatrically and syntopically with the type species of the genus G. carapo. The new species is diagnosed by a unique combination of morphometric, meristic, and osteological traits, and a characteristic color pattern in which the dark band-pairs are unbranched and incompletely separated, and the pale inter-bands rarely reach to the dorsal mid-line on the anterior half of the body, being crescent-shaped in abdominal area. Gymnotus chaviro is a member of the G. carapo species group, with which it shares the presence of two pores in the dorsolateral portion of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Biodiversity; Electric fish; Neotropical fish. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400004 |
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| Souza,Lesley S. de; Melo,Marcelo R. S.; Chamon,Carine C.; Armbruster,Jonathan W.. |
| Hemiancistrus cerrado is described from the tributaries of rio Araguaia, rio Tocantins basin. Hemiancistrus cerrado has external similarities with H. megalopteryx and H. punctulatus from coastal streams of southern Brazil, and can be distinguished by having a larger internarial width, 15.9-21.1% of head length (vs. 11.2-14.0% in H. megalopteryx and 11.2-13.9% in H. punctulatus) and, with little overlap, by the larger adipose-fin spine length, 9.4-13.6% of standard length (vs. 7.1-8.7% in H. megalopteryx and 7.4-10.0% in H. punctulatus). Hemiancistrus cerrado further differs from H. megalopteryx by having the pectoral-fin spine reaching maximally to the middle of the pelvic-fin spine when adpressed in adult males (vs. reaching tip). Hemiancistrus cerrado... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropics; Catfish; Ancistrini; Cerrado; Taxonomy. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300015 |
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| Bertaco,Vinicius A.; Malabarba,Luiz R.; Hidalgo,Max; Ortega,Hernán. |
| A new characid species, Hemibrycon divisorensis, is described from the río Ucayali drainage, Loreto, Peru. The new species is distinguished from all Hemibrycon species by the presence of a wide black asymmetrical spot covering base of caudal-fin rays and extending along entire length of caudal-fin rays 9 to 12-13 (except from H. surinamensis), and a black band in the lower half of the caudal peduncle extending from the region above the last anal-fin rays to the caudal-fin base. Furthermore, it is distinguished from most species of the genus by the number of scale rows below the lateral line (4-5 vs 5-9), except H. jabonero, H. microformaa, H. orcesi, and H. surinamensis. It differs from these species by scale and fin ray counts and color pattern. The lack... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical; Amazon basin; Taxonomy; Supraorbital; Fin hooks; Carlastyanax. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300003 |
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| Ota,Rafaela P.; Lima,Flávio C. T.; Pavanelli,Carla S.. |
| A new Hemigrammusis described from the rio Paraguai and rio Madeira basins, Mato Grosso and Rondônia States, Brazil. The new species is characterized by possessing a wide dark horizontal stripe across the eye, a vertically elongated humeral blotch, and 4-5 gill-rakers on upper branch and 9-10 on lower. The new species can be easily diagnosed from H. lunatus, the sympatric and morphologically most similar congener, by the shape of humeral blotch and the number of gill rakers. Data of the type material of both Hemigrammus lunatus and H. maxillaris, as well as extensive examination of specimens, allowed us to conclude that H. maxillarisis a junior subjective synonym of H. lunatus. A redescription of H. lunatus, as well as a formal restriction of its type... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogeography; Characidae incertae sedis; Hemigrammus maxillaris; Hemigrammus ulreyi; Type locality. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200265 |
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| Registros recuperados: 1.204 | |
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