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New species of Cetopsidium (Siluriformes: Cetopsidae: Cetopsinae) from the upper rio Branco system in Guyana
Vari, Richard P; Ferraris Júnior, Carl J.
  • Vari, Richard P; National Museum of Natural History. Department of Vertebrate Zoology. Division of Fishes. Washington. US
  • Ferraris Júnior, Carl J; National Museum of Natural History. Department of Vertebrate Zoology. Washington. US
Neotrop. ichthyol ; 7(3): 289-293, Sept. 2009. ilus
Article in English | LILACS, VETINDEX | ID: lil-530300
ABSTRACT
Cetopsidium soniae, new species, is described from the Takutu River basin of southwestern Guyana, within the upper portions of the rio Branco of the Amazon basin. The new species differs from its congeners in details of pigmentation, the length of the pelvic fin, the form of the first rays of the dorsal and pectoral fins in mature males, the relative alignment of the dorsal and ventral profiles of the postdorsal portion of the body, the position of the anus, and the depth of the body. DNA barcodes were generated for the holotype and paratype. An examination of other samples of Cetopsidium from the rio Branco system extends the range of C. pemon into the Ireng River system of Guyana.(AU)
RESUMO
Cetopsidium soniae, espécie nova, é descrita da bacia do rio Takutu, sudoeste da Guiana, na porção superior do rio Branco, bacia Amazônica. A nova espécie difere das demais espécies do gênero em detalhes de pigmentação, pelo comprimento da nadadeira pélvica, na forma dos primeiros raios das nadadeiras dorsal e peitoral em machos maduros, no relativo alinhamento dos perfis dorsal e ventral da região pós-dorsal do corpo, na posição do ânus, e na altura do corpo. Códigos de barra de DNA foram gerados para o holótipo e parátipo. O exame de outras amostras de Cetopsidium do sistema do rio Branco estende a distribuição de C. pemon até o sistema do rio Ireng na Guiana.(AU)
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Full text: Available Index: LILACS (Americas) Main subject: Body Composition / Catfishes Country/Region as subject: South America / English Caribbean / Guyana Language: English Journal: Neotrop. ichthyol Year: 2009 Type: Article Institution/Affiliation country: National Museum of Natural History/US

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Full text: Available Index: LILACS (Americas) Main subject: Body Composition / Catfishes Country/Region as subject: South America / English Caribbean / Guyana Language: English Journal: Neotrop. ichthyol Year: 2009 Type: Article Institution/Affiliation country: National Museum of Natural History/US