Data/hora: 11/06/2024 15:59:03

Provedor de dados: | 83
País: | Brazil
Título: | Redescription of Astyanax goyacensis Eigenmann, 1908 (Ostariophysi: Characiformes: Characidae)
Autores: | Garutti,Valdener; Langeani,Francisco.
Data: | 2009-09-01
Ano: | 2009
Palavras-chave: | Astyanax bimaculatus species complex; Astyanax asuncionensis; Rio Vermelho; Rio Araguaia basin; Color pattern.
Resumo: | Astyanax goyacensis Eigenmann, 1908 is redescribed based on the holotype and 25 topotypes. The species belongs to the A. bimaculatus species complex, sharing with those species a black, horizontally ovate, humeral spot (the most conspicuous feature of this complex), two diffuse vertical brown bars in the humeral area (the first through humeral spot and the second 2-3 scales behind), and black medium caudal-fin rays. Furthermore, A. goyacensis possesses a black stripe extending along midlateral body portion, more conspicuous in alcohol preserved specimens. These characteristics allow its inclusion in the putative "black lateral stripe" sub-group of A. bimaculatus species complex. From the species of this complex it differs by the black lateral stripe shape, pattern of chromatophores on the flank, coloration of the caudal fin, scales on the lateral line, branched rays on anal fin, eye diameter, and caudal peduncle depth. Comments about the color pattern in Astyanax bimaculatus species complex are added.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300003
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252009000300003
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.7 n.3 2009
Fonte: | info:eu-repo/semantics/openAccess