Observations on the infection by Kudoa sp. em peixes capturados em Rio Grande, Estado do Rio Grande do Sul, Brasil

• Published in: Acta scientiarum. Biological sciences 2016-01, Vol.38 (1), p.99
• Main Authors: Eiras, Jorge Costa, Pereira, Joaber, Jr, Saraiva, Aurelia, Cruz, Cristina Faria
• Format: Article
• Language: Spanish
• ISSN: 1679-9283
• DOI: 10.4025/actascibiolsci.v38i1.30492

It is reported the parasitization of Kudoa sp. (Myxozoa, Multivalvulida) within the somatic muscles of the fish Odontesthes bonariensis (Valenciennes, 1835), Micropogonias furnieri (Desmarest, 1823) and Mugil liza Valenciennes, 1836, captured off Rio Grande, Rio Grande do Sul State, Brazil. Other species of fish caught at the same place were not infected. The parasites formed elongated plasmodia inside the muscle fibres. Myoliquefaction or any host tissue reaction were not observed. The morphological and morphometric features of the spores are described, the parasites are compared with other Kudoa species, and the importance of the infection is discussed. Keywords: cnidaria, myxosporea, fish, muscles, myoliquefaction. Descreve-se a infeccao de Kudoa sp. (Myxozoa, Multivalvulida) nos musculos somaticos dos peixes O. bonariensis (Valenciennes, 1835), M. furnieri (Desmarest, 1823) e M. liza (Valenciennes, 1836), capturados em Rio Grande, Estado do Rio Grande do Sul, Brasil. Outras especies de peixes capturados no mesmo local nao estavam parasitadas. Os parasitas formavam plasmodios alongados no interior das fibras musculares. Nao se observou liquefacao do musculo do hospedeiro ou qualquer outra reacao dos tecidos. Descrevem-se as caracteristicas morfologicas e morfometricas dos esporos, os parasitas sao comparados com outras especies de Kudoa, e a importancia da parasitose e discutida. Palavras-chave: cnidaria, myxosporea, peixes, musculo, mioliquefaccao.