A New Species Of Henneguya, A Gill Parasite Of Astyanax Altiparanae (pisces: Characidae) From Brazil, With Comments On Histopathology And Seasonality.

dc.creatorBarassa, Bianca
dc.creatorCordeiro, Nelson S
dc.creatorArana, Sarah
dc.date2003-Sep
dc.date2015-11-27T12:52:33Z
dc.date2015-11-27T12:52:33Z
dc.date.accessioned2018-03-29T00:58:13Z
dc.date.available2018-03-29T00:58:13Z
dc.identifierMemórias Do Instituto Oswaldo Cruz. v. 98, n. 6, p. 761-5, 2003-Sep.
dc.identifier0074-0276
dc.identifier
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/14595452
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/195584
dc.identifier14595452
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1295817
dc.descriptionA new species of Myxosporea, Henneguya chydadea, is described parasitizing the gills of Astyanax altiparanae collected from a lake on Rio das Pedras farm near Campinas, state of São Paulo, Brazil. Of the fish examined, 88.3% had gills parasitized by myxosporeans. The prevalence of the parasite ranged from 80% in the spring and fall, 93% in the summer and 100% in the winter. The parasite induced the formation of white, oval-shaped cysts measuring 40-64 microm x 64-80 microm which deformed the gill lamellae, compressed the capillaries, and caused retraction of the neighboring lamellae. The mature spores were elongated and had two identical, parallel elongate polar capsules. Each capsule contained a polar filament with 9-10 turns. There was no mucous envelope or iodinophilous vacuole. Morphometric differences between this parasite and other species of the genus Henneguya indicated, that the parasite observed in A. altiparanae is a new species. This is the first report of a myxosporeanparasitizing A. altiparanae.
dc.description98
dc.description761-5
dc.languageeng
dc.relationMemórias Do Instituto Oswaldo Cruz
dc.relationMem. Inst. Oswaldo Cruz
dc.rightsaberto
dc.rights
dc.sourcePubMed
dc.subjectAnimals
dc.subjectBrazil
dc.subjectEukaryota
dc.subjectFemale
dc.subjectFish Diseases
dc.subjectFishes
dc.subjectFresh Water
dc.subjectGills
dc.subjectMale
dc.subjectMicroscopy, Electron
dc.subjectPrevalence
dc.subjectProtozoan Infections, Animal
dc.subjectSeasons
dc.titleA New Species Of Henneguya, A Gill Parasite Of Astyanax Altiparanae (pisces: Characidae) From Brazil, With Comments On Histopathology And Seasonality.
dc.typeArtículos de revistas


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