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Erschienen in: Journal of Parasitic Diseases 1/2020

03.12.2019 | Original Article

Henneguyosis in gills of Metynnis hypsauchen: an Amazon freshwater fish

verfasst von: Rayline Thaimenne Alves Figueredo, Jhonata Eduard Farias de Oliveira, Maria do Perpétuo Socorro Progene Vilhena, José Berredo, Weverton John Pinheiro dos Santos, Edilson Matos, Michele Velasco

Erschienen in: Journal of Parasitic Diseases | Ausgabe 1/2020

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Abstract

This study describes aspects of infection caused by Myxozoa of the genus Henneguya sp. in gills of fish belonging to the species Metynnis hypsauchen. Two sampling were made in the Capim river, close to the Ribeira community, in the municipality of Ipixuna do Pará, State of Pará, Brazil, during the months of August 2018 and March 2019. The animals were captured and transported live to the Laboratório de Pesquisa Carlos Azevedo, at the Universidade Federal Rural da Amazônia (UFRA), in Belém, Pará, Brazil. The animals were examined, and after parasitism was confirmed, Differential Interference Contrast Microscopes were used, to evaluate the parasite spores. Ziehl–Neelsen stain techniques were used in histology. Necroscopic analyses of Metynnis hypsauchen specimens found parasites in 80% of the hosts (16/20), with whitish-colored cysts in the branchial filaments, containing mature spores of the genus Henneguya. The histopathological analysis indicated large areas with cystic lesions with associated ischemic necrosis. The descriptions from this study indicate that the parasite drastically compromises the host’s respiratory system. Additionally, it is worth noting that parasite fauna studies of fishes in the Capim river are still a vast topic for research; this is the first record of infection by Henneguya sp. in Metynnis hypsauchen, captured in the Capim river in Ipixuna do Pará.
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Metadaten
Titel
Henneguyosis in gills of Metynnis hypsauchen: an Amazon freshwater fish
verfasst von
Rayline Thaimenne Alves Figueredo
Jhonata Eduard Farias de Oliveira
Maria do Perpétuo Socorro Progene Vilhena
José Berredo
Weverton John Pinheiro dos Santos
Edilson Matos
Michele Velasco
Publikationsdatum
03.12.2019
Verlag
Springer India
Erschienen in
Journal of Parasitic Diseases / Ausgabe 1/2020
Print ISSN: 0971-7196
Elektronische ISSN: 0975-0703
DOI
https://doi.org/10.1007/s12639-019-01183-7

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