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| Registros recuperados: 15 | |
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| Menezes,Naércio A.; Ferreira,Katiane M.; Netto-Ferreira,André L.. |
| ABSTRACT A new species of the characid genus Knodus is described from the rio Aripuanã (rio Madeira basin). It can be distinguished from its congeners by its very low body depth, the presence of tri- to pentacuspid teeth on the outer premaxillary series, with the median cuspid larger than the lateral ones, the teeth of the inner premaxillary series pentacuspid, distinctly larger than those of the outer series, the maxillary teeth tri- to pentacuspid, with the median cusp slightly larger than the lateral ones, the four anteriormost dentary teeth pentacuspid, the smaller posterior teeth tri- to pentacuspid, a complete lateral line with 36-38 scales, 3 longitudinal scale series from pelvic fin origin to lateral line, and 11-12 circumpeduncular scales. The new... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bryconamericus; Distribution; Neotropical Fish; Systematics; Taxonomy. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000200208 |
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| Menezes,Naércio A.; Weitzman,Stanley H.. |
| Diapoma is reviewed and four species are recognized: (1) Diapoma thauma, new species, from streams of the rio Jacuí basin, state of Rio Grande do Sul; (2) D. pyrrhopteryx, new species collected from the rio Canoas and streams flowing into this basin in the states of Rio Grande do Sul and Santa Catarina, Brazil; (3) Diapoma terofali, from streams flowing into rio Uruguay in Uruguay and Rio Grande do Sul, Brazil and streams flowing into rio de la Plata, Argentina; and (4) Diapoma speculiferum, from lowland coastal streams in Rio Grande do Sul, Brazil and Uruguay. Diapoma pyrrhopteryx possess the posteroventral opercular elongation typical of D. speculiferum, type species of the genus, but which is absent in D. thauma and D. terofali. Nonetheless, all the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Taxonomy; New species; Characidae; Diapoma. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492011000500001 |
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| Petry,Paulo; Mautari,Kelly; Menezes,Naércio A.; Hartel,Karsten. |
| The type status of the specimens of the genus Laemolyta described by S. Garman and N. Borodin are reviewed. The species involved were described as Anostomus varius nitens Garman, 1890, A. varius Garman, 1890, A. proximus Garman, 1890, and A. garmani Borodin, 1931. Several lots were subsequently erroneously designated as types and their status are corrected. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anostomus varius nitens; Anostomus proximus; Anostomus garmani; Taxonomy; Types. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000100011 |
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| Weitzman,Stanley H.; Menezes,Naércio A.; Evers,Hans-Georg; Burns,John R.. |
| A new inseminating fish species of the family Characidae, Bryconadenos tanaothoros, from tributaries of the upper rio Xingu and upper rio Tapajós basins, Mato Grosso, Brazil is described as the type species of a new genus. This new species and the genus are characterized by a glandular organ on the anterior region of the anal fin of sexually mature males, curved lower jaw teeth, and an inseminating reproductive mode. This new genus is hypothesized as most closely related to Attonitus, a genus with three inseminating species from Peru. Bryconadenos and Attonitus are suggested as related to certain inseminating, but undescribed characid species of uncertain relationships that are similar in certain respects to species of the glandulocaudine Planaltina and to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inseminating characid phylogeny; Putative male pheromone cells; Attonitus; Bryconadenos; Knodus. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300002 |
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| Giovannetti,Victor; Toledo-Piza,Mônica; Menezes,Naércio A.. |
| ABSTRACT The taxonomy of Galeocharax, a genus of freshwater fishes distributed in most South American cis-Andean river systems, except the rio Negro, rio São Francisco and rio Xingu basins and the eastern drainages of Brazil, is herein revised. A total of 1229 specimens were examined from which 680 had meristic and morphometric data taken. Osteological and morphological features were also examined through radiographs, scanning electron microscopy and in cleared and stained specimens. Three of the four species previously considered as valid are herein recognized: Galeocharax humeralis from rio Paraguay and lower rio Paraná basins; Galeocharax goeldii, from rio Madeira basin, with records of geographical distribution expanded to the río Madre de Dios, río... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Key of identification; Ostariophysi; Systematics; Widespread species. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100201 |
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| Menezes,Naércio A.; Weitzman,Stanley H.; Quagio-Grassiotto,Irani. |
| Two new species of inseminating freshwater fishes of the genus Monotocheirodon, family Characidae, are described from Peru. Males and females of both new species have an external, visually obvious urogenital papilla that was not detected in the females in previous studies, with this longer in males, which use it as an inseminating organ. A third inseminating species from Bolivia, Monotocheirodon pearsoni, unstudied in any detail since its original description in 1924, is redescribed. This latter species lacks an inseminating organ. Monotocheirodon is redescribed, its phylogenetic relationships are briefly discussed and it is suggested that it is possibly related to the stevardiin genera Ceratobranchia, Othonocheirodus, and Odontostoechus. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inseminating characid fishes; New species and relationships of Monotocheirodon. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013001000001 |
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| Registros recuperados: 15 | |
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