A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil
A new species of Xenurobrycon isdescribed from tributaries of the rio Tapajós, Pará, Brazil. It is diagnosed from all congeners by the dark color of the posterior half of both caudal-fin lobes, the presence of infraorbitals one, two, and three, the presence of a set of lamellar processes on eighth p...
| Autor principal: | MENDONÇA, Marina Barreira |
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| Outros Autores: | PEIXOTO, Luiz Antônio Wanderley, DUTRA, Guilherme Moreira, NETTO-FERREIRA, André Luiz |
| Grau: | Artigo |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Pará
2017
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| Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/8914 |
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ir-2011-8914 |
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ir-2011-89142018-10-06T13:28:20Z A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil MENDONÇA, Marina Barreira PEIXOTO, Luiz Antônio Wanderley DUTRA, Guilherme Moreira NETTO-FERREIRA, André Luiz Characiformes Characidae Peixe Rio Tapajós - PA Taxonomia animal A new species of Xenurobrycon isdescribed from tributaries of the rio Tapajós, Pará, Brazil. It is diagnosed from all congeners by the dark color of the posterior half of both caudal-fin lobes, the presence of infraorbitals one, two, and three, the presence of a set of lamellar processes on eighth principal caudal-fin ray of mature males, the presence of bony hooks similar in size or decreasing posteriorly on last unbranched and first 9-12 branched anal-fin rays of mature males, the presence of only conical teeth on both jaws, the lack of the adipose fin and the presence of 15-18 predorsal scales. The description of the new species increases the number of species in Xenurobrycon to six. An updated key to the species of the genus is provided. Uma espécie nova de Xenurobrycon édescrita de tributários do rio Tapajós, Pará, Brasil. Esta é diagnosticada de todas as congêneres pela coloração escura da metade posterior de ambos os lobos da nadadeira caudal, pela presença dos infraorbitais um, dois e três, pela presença de um conjunto de processos laminares no oitavo raio principal do lobo inferior da nadadeira caudal em machos maduros, pela presença de ganchos no último raio indiviso e primeiros 9-12 raios ramificados da nadadeira anal em machos maduros, estes com tamanho similar ou diminuindo de tamanho posteriormente, pela presença de apenas dentes cônicos nas maxilas, pela ausência de nadadeira adiposa e pela presença de 15-18 escamas pré-dorsais. A descrição da espécie novaaumenta o número de espécies em Xenurobrycon para seis. Uma chave atualizada para as espécies do gênero é fornecida. 2017-07-25T18:52:33Z 2017-07-25T18:52:33Z 2016 Artigo de Periódico MENDONCA, Marina Barreira et al. A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil. Neotropical Ichthyology, Maringá, v. 14, n. 1, e150057, 2016. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100004&lng=pt&nrm=iso>. Acesso em: 25 jul. 2017. Epub 30-Mar-2016. <http://dx.doi.org/10.1590/1982-0224-20150057>. 1982-0224 http://repositorio.ufpa.br/jspui/handle/2011/8914 por Neotropical Ichthyology Acesso Aberto application/pdf Universidade Federal do Pará Brasil UFPA |
| institution |
Repositório Institucional - Universidade Federal do Pará |
| collection |
RI-UFPA |
| language |
por |
| topic |
Characiformes Characidae Peixe Rio Tapajós - PA Taxonomia animal |
| spellingShingle |
Characiformes Characidae Peixe Rio Tapajós - PA Taxonomia animal MENDONÇA, Marina Barreira A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil |
| topic_facet |
Characiformes Characidae Peixe Rio Tapajós - PA Taxonomia animal |
| description |
A new species of Xenurobrycon isdescribed from tributaries of the rio Tapajós, Pará, Brazil. It is diagnosed from all congeners by the dark color of the posterior half of both caudal-fin lobes, the presence of infraorbitals one, two, and three, the presence of a set of lamellar processes on eighth principal caudal-fin ray of mature males, the presence of bony hooks similar in size or decreasing posteriorly on last unbranched and first 9-12 branched anal-fin rays of mature males, the presence of only conical teeth on both jaws, the lack of the adipose fin and the presence of 15-18 predorsal scales. The description of the new species increases the number of species in Xenurobrycon to six. An updated key to the species of the genus is provided. |
| format |
Artigo |
| author |
MENDONÇA, Marina Barreira |
| author2 |
PEIXOTO, Luiz Antônio Wanderley DUTRA, Guilherme Moreira NETTO-FERREIRA, André Luiz |
| author2Str |
PEIXOTO, Luiz Antônio Wanderley DUTRA, Guilherme Moreira NETTO-FERREIRA, André Luiz |
| title |
A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil |
| title_short |
A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil |
| title_full |
A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil |
| title_fullStr |
A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil |
| title_full_unstemmed |
A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil |
| title_sort |
new miniature of xenurobryconini (characiformes: characidae) from the rio tapajós basin, brazil |
| publisher |
Universidade Federal do Pará |
| publishDate |
2017 |
| url |
http://repositorio.ufpa.br/jspui/handle/2011/8914 |
| _version_ |
1832602291067158528 |
| score |
11.755432 |