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| Deprá,Gabriel de Carvalho; Ota,Renata Rúbia; Vitorino Júnior,Oscar Barroso; Ferreira,Katiane Mara. |
| ABSTRACT Two new species from the upper rio Tocantins basin are described in Knodus based on the traditional definition of the genus. The new species are distinguished from other congeners by meristic and morphometric characters, such as the number of cusps in the premaxillary and dentary teeth, the number of scale series between dorsal-fin origin and lateral line, the orbital diameter and the body depth. With the two new species, the number of endemic species in the upper rio Tocantins basin upstream of the mouth of the rio Paranã, rises to 53 (89 to the confluence with rio Araguaia). The existence of a meristic character that changes through ontogeny (allomery), viz. the number of scale series between dorsal-fin origin and lateral line, was detected in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allochromy; Allomery; Endemism; Knodus breviceps; Secondary sexual characters. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000100208 |
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| Ota,Renata Rúbia; Deprá,Gabriel de Carvalho; Graça,Weferson Júnio da; Pavanelli,Carla Simone. |
| ABSTRACT The book “Peixes da planície de inundação do alto rio Paraná e áreas adjacentes” represents the most cohesive data compilation for the rio Paraná floodplain. However, considering the dynamicity of the taxonomy of freshwater fishes, several new records and taxonomic changes occurred along the past years. Therefore, the results of that publication were revisited, providing an update of the species list, their taxonomic status, records and geographic distribution, and also new keys for genera and species. The species included were those recorded in the rio Paraná basin, from the mouth of the rio Paranapanema to the Itaipu Reservoir, following the general methodology presented in the book. A total of 10 orders, 41 families, 126 genera, and 211 species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geographical distribution; Ichthyological diversity; Key of identification; Non-native species; Taxonomy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000200202 |
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| Frota,Augusto; Ota,Renata Rúbia; Deprá,Gabriel de Carvalho; Ganassin,Maria Julia Mileo; Graça,Weferson Júnio da. |
| Abstract: The rio das Cinzas and rio Itararé basins are important tributaries of the rio Paranapanema, a major left-bank tributary of the upper rio Paraná basin. The upper reaches of both drainages intersect the northern portion of the APA Escarpa Devoniana (Devonian Escarpment Environment Protection Area, EPA), an area considered crucial for the preservation of biodiversity. This study aimed to provide an ichthyofaunistic inventory for headwater streams of the rio das Cinzas and rio Itararé basins, both within and off of the borders of the EPA, increasing the knowledge about the species already known from streams in the rio Paranapanema system. We found 32 fish species, representing five orders and 12 families. Siluriformes was the richest order followed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitudinal gradient; Devonian Escarpment; Faunal exchange; Upper rio Paraná. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100303 |
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