Abstract
A myxosporeanHenneguya sp. was found in the gill filaments of a freshwater fish,Hoplosternum littorale, from the lower Amazon river near Belém, 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 ∼45.2 μm 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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Abolarin MO (1971) A new species ofHenneguya (Myxosporida, Protozoa) from the West African catfish,Clarias lazera Valenciennes, with a review of the genusHenneguya Thélohan, 1892. Afr J Trop Hydrobiol Fish 1:93–105
Azevedo C, Lom J, Corral L (1989) Ultrastructural aspects ofMyxidium giardi (Myxozoa, Myxosporea), parasite of the European eelAnguilla anguilla. Dis Aquat Org 6:55–61
Current WL (1979)Henneguya adiposa Minchew (Myxosporida) in the channel catfish: ultrastructure of the plasmodium wall and sporogenesis. J Protozool 2:209–217
Current WL, Janovy J Jr (1977) Sporogenesis inHenneguya exilis infecting the channel catfish: an ultrastructural study. Protistologica 13:157–167
Kent ML, Hoffman GL (1984) Two new species of Myxozoa,Myxobolus inaequus sp. n. andHenneguya theca sp. n. from the brain of the South American knife fish,Eigemannia virescens (V.). J Protozool 31:91–94
Lom J (1984) Diseases caused by protistans. In: Kinne O (ed) Diseases of marine animals, vol IV, part 1. Biologische Anstalt Helgoland, Hamburg, pp 114–168
Lom J, De Puytorac P (1965) Studies on the myxosporidian ultrastructure and polar capsule development. Protistologica 1:53–65
Lom J, Noble ER (1984) Revised classification of the class Myxosporea Bütschli, 1881. Folia Parasitol (Praha) 31: 193–205
Lom J, Vávra J (1965) Note on the morphogenesis of the polar filament inHenneguya (Protozoa, Cnidosporidia). Acta Protozool 3:57–60
Minchew CD (1977) Five new species ofHenneguya (Protozoa: Myxosporida) from ictalurid fishes. J Protozool 24:213–220
Parker JD, Spall RD, Warner MC (1971) Two new Myxosporida,Henneguya gambusi sp. n. andMyxosoma pharyngeus sp. n. in the mosquitofish,Gambusia affinis (Baird and Girard). J Parasitol 57:1297–1301
Schubert G (1968) Elektronenmikroskopische Untersuchungen zur Sporenentwicklung vonHenneguya pinnae Schubert (Sporozoa, Myxosporidea, Myxobolidae). Z Parasitenkd 30:57–77
Shariff M (1982)Henneguya shaharini sp. nov. (Protozoa: Myxozoa), a parasite of the marble goby,Oxyeleotris marmoratus (Bleeker). J Fish Dis 5:37–45
Walliker D (1969) Myxosporidea of some Brazilian freshwater fishes. J Parasitol 55:942–948
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Azevedo, C., Matos, E. Some ultrastructural data on the spore development in aHenneguya sp. parasite of the gill of a Brazilian fish. Parasitol Res 76, 131–134 (1989). https://doi.org/10.1007/BF00930834
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00930834