Azevedo C ; Matos E ;

Parasitol Res vol. 76 (2)   pp. 131-4, 1989

Department of Cell Biology, University of Oporto, Portugal.

A myxosporean Henneguya sp. was found in the gill filaments of a freshwater fish, Hoplosternum littorale, from the lower Amazon river near Belem, Brazil. Plasmodia were represented by numerous vegetative nuclei, generative cells and sporogony stages. The spore body was ellipsoidal and each valve presented a tapering tail approximately 45.2 microns in length. The spores differed from those of previously described species in their shape and size. The developmental stages are described and discussed. This histozoic species is reported to be pathogenic, inducing great mortality in the host.

Animal ;  Apicomplexa: ultrastructure ;  Fish Diseases: parasitology ;  Fishes ;  Microscopy,Electron ;  Microscopy,Electron,Scanning ;  Protozoan Infections: parasitology: veterinary ;  Support,Non-U.S.Gov't ;  6060 ;