Morphological and hematological studies ofTrypanosoma spp. infecting ornamental armored catfish from Guamá River-PA, Brazil

• Autor(a) principal: Fujimoto,Rodrigo Y.
• Data de Publicação: 2013
• Outros Autores: Neves,Mikaelle S., Santos,Rudã F.B., Souza,Natalino C., Couto,Márcia V.S. do, Lopes,Josiane N.S., Diniz,Daniel G., Eiras,Jorge C.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Anais da Academia Brasileira de Ciências (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301149
• topic: freshwater fish; hematological parameters; infection; Trypanosoma spp

A total of 281 specimens of freshwater armored ornamental fish species (Leporacanthicus galaxias, Lasiancistrus saetiger,Cochliodonsp., Hypostomussp.,Pseudacanthicus spinosus, Ancistrussp. andRineloricariacf. lanceolata) were captured at the hydrological basin of Guamá River, Pará, Brazil. The infection by Trypanosoma spp. was inspected. The morphological and morphometric characterization of the parasites and the hematological parameters were determined. Leporacanthicus galaxias andPseudacanthicus spinosus presented 100% infection prevalence, and the other species showed a variable prevalence of infection. The parasites showed clearly different morphotypes and dimensions, and probably belong to different species. The hematological response to the infection varied with the host. Cochliodon sp. showed no differences between infected and not infected fish. In other species several modifications on some hematological parameters were found, but apparently without causing disease. It is emphasized the possibility of introduction of the parasites in new environments due to the artificial movements of these ornamental fish.