Data/hora: 05/06/2024 18:25:04

Provedor de dados: | 83
País: | Brazil
Título: | A new species of HyphessobryconDurbin(Characiformes: Characidae) from the rio Juruena basin, Central Brazil, with notes on H. loweae Costa &amp;amp; Géry
Autores: | Ingenito,Leonardo F. S.; Lima,Flávio C. T.; Buckup,Paulo A.
Data: | 2013-03-01
Ano: | 2013
Palavras-chave: | Filamentous dorsal-fin; Hyphessobrycon elachys; Hyphessobrycon heliacus; Rio Tapajós basin; Rio Tocantins basin; Sexual dimorphism.
Resumo: | A new species of Hyphessobrycon, H. peugeoti, is described from the middle portions of the rio Juruena drainage, upper rio Tapajós basin, Mato Grosso State, Brazil. It can be distinguished from all congeners, with the exception of H. loweae and H. heliacus, by a filamentous elongation of the dorsal fin and the approximately straight margin of the anal fin in adult males. It can be distinguished from both H. loweae and H. heliacus by an overall red coloration in life (vs. a golden coloration in life in the latter). Additionally, it can be distinguished from H. heliacus by the lack of chevron-like dark markings along the midline (vs. presence of chevron-like dark-markings in H. heliacus), and from H. loweae by the presence of only five horizontal scale rows between the dorsal-fin origin and the lateral line (vs. 6-7 inH. loweae), and the higher number of branched anal-fin rays (21-24, modally 22, vs. 17-21, modally 20, in H. loweae). Additional meristic, morphometric, and distributional data are provided for Hyphessobrycon loweae, including its first record in the rio Araguaia/Tocantins basin. Comments on a putative monophyletic group including H. peugeoti, H. loweae,H. heliacus, H. elachys, and H. moniliger are presented.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100033
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252013000100004
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.11 n.1 2013
Fonte: | info:eu-repo/semantics/openAccess