Data/hora: 07/06/2024 02:27:19

Provedor de dados: | 83
País: | Brazil
Título: | Two new species of Characidium Reinhardt (Characiformes: Crenuchidae) from northeastern Brazilian coastal drainages
Autores: | Zanata,Angela M.; Camelier,Priscila.
Data: | 2015-09-01
Ano: | 2015
Palavras-chave: | Characidiinae; Neotropical region; Sexual dimorphism; Taxonomy.
Resumo: | Two new species of Characidium , onefrom the rio Pardo basin, and anotherfrom the rio Paraguaçu basin, Bahia, Brazil, are described. The first new speciesis distinguished from its congeners by having conspicuous black vertical traces on body, formed by the concentration of melanophores along posterior margin of scales. The species further differs from most congeners by the presence of a conspicuous 3-shaped black blotch on the caudal fin and isthmus not covered by scales. The other new species is distinguished from congeners by having irregular dark blotches on dorsum alternating elongation to one or the other side of body, usually not connected to lateral blotches. The species can be further characterized by the absence of conspicuous blotches or bars on fins and the presence of secondary sexual dimorphism, such as pelvic fins of mature males longer than in females and with bony hooks.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300487
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/1982-0224-20140106
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.13 n.3 2015
Fonte: | info:eu-repo/semantics/openAccess