Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)

SILVA, Michele Velasco Oliveira da; VIDEIRA, Marcela Nunes; SINDEAUX NETO, José Ledamir; SANTOS, Patricia dos; SANCHES, Osimar de Carvalho; MATOS, Patrícia Santos

Artigo

Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)

This study describes aspects of the infection caused by the myxosporean genus Henneguya, which forms cysts in the bony portion of the gill filaments of Hypophthalmusmarginatus. Specimens of this catfish were acquired dead from artisanal fishermen near the town of Cametá, state of Pará, northern Braz...

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Autor principal:	SILVA, Michele Velasco Oliveira da
Outros Autores:	VIDEIRA, Marcela Nunes, SINDEAUX NETO, José Ledamir, SANTOS, Patricia dos, SANCHES, Osimar de Carvalho, MATOS, Patrícia Santos
Grau:	Artigo
Idioma:	por
Publicado em:	Universidade Federal do Pará 2017
Assuntos:	Myxozoa Infecção parasitária Peixe Bagre Hypophthalmus marginatus Histologia Parasita Pará - Estado Cametá - PA
Acesso em linha:	http://repositorio.ufpa.br/jspui/handle/2011/7605

id	ir-2011-7605
recordtype	dspace
spelling	ir-2011-76052017-12-20T15:30:54Z Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes) Infecção por Henneguya sp. (Myxozoa) em tecido ósseo do filamento branquial do bagre amazônico Hypophthalmus marginatus (Siluriformes) SILVA, Michele Velasco Oliveira da VIDEIRA, Marcela Nunes SINDEAUX NETO, José Ledamir SANTOS, Patricia dos SANCHES, Osimar de Carvalho MATOS, Patrícia Santos Myxozoa Infecção parasitária Peixe Bagre Hypophthalmus marginatus Histologia Parasita Pará - Estado Cametá - PA This study describes aspects of the infection caused by the myxosporean genus Henneguya, which forms cysts in the bony portion of the gill filaments of Hypophthalmusmarginatus. Specimens of this catfish were acquired dead from artisanal fishermen near the town of Cametá, state of Pará, northern Brazil, between July 2011 and May 2012. They were transported in refrigerated containers to the Carlos Azevedo Research Laboratory at the Federal Rural University of Amazonia, in Belém, where analyses were performed. After confirmation of parasitism by the genus Henneguya, observation were made using optical and differential interference contrast (DIC) microscopy. The histological technique of embedment in paraffin was used. Ziehl-Neelsen staining was applied to the histological sections. Necropsy analyses on specimens of H. marginatus showed that 80% of them (40/50) had cysts of whitish coloration inside the bony portion of the gill filaments, filled with Henneguya spores. The present study found inflammatory infiltrate in the vicinity of the cysts. Furthermore, the special Ziehl-Neelsen staining technique made it possible to mark the Henneguya sp. cysts in the bone tissue and in spore isolates in the gill tissue structure. The descriptions of these histopathological findings show that this parasite is very invasive and causes damage to its host tissues. O presente estudo descreve os aspectos da infecção causada por mixosporídio do gênero Henneguya, formando cistos na porção óssea dos filamentos branquiais de Hypophthalmus marginatus. Espécimes desse bagre foram adquiridos mortos de pescadores artesanais perto da cidade de Cametá, Estado do Pará, Brasil, entre julho de 2011 e maio de 2012. Os animais foram transportados em contêineres refrigerados até o Laboratório de Pesquisa Carlos Azevedo, na Universidade Federal Rural da Amazônia, em Belém, onde se procederam as análises. Após a constatação do parasitismo pelo gênero Henneguya, foi realizada a observação em microscópio óptico e em microscópio de contraste de interferência diferencial (DIC). Foi realizada técnica histológica de impregnação em parafina e coloração dos cortes histológicos em Ziehl-Neelsen. As análises necroscópicas dos espécimes de H. marginatus revelaram que 80% (40/50) destes apresentavam cistos esbranquiçados na porção óssea dos filamentos branquiais, repletos de esporos do gênero Henneguya. O presente estudo revelou infiltrado inflamatório nas imediações dos cistos. Além disso, a técnica especial de coloração em Ziehl-Neelsen possibilitou marcar os cistos de Henneguya sp. no tecido ósseo e de esporos isolados na estrutura de tecido branquial. As descrições desses achados histopatológicos mostram que esse parasita é muito invasivo e produz danos aos seus tecidos do hospedeiro. 2017-02-07T16:44:23Z 2017-04-10T16:24:14Z 2017-02-07T16:44:23Z 2017-04-10T16:24:14Z 2015-09 Artigo de Periódico VELASCO, Michele et al. Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes). Revista Brasileira de Parasitologia Veterinária, Jaboticabal, v. 24, n. 3, p. 365-369, jul./set. 2015. Disponível em: <http://www.scielo.br/pdf/rbpv/v24n3/1984-2961-rbpv-S1984-29612015021.pdf>. Acesso em: 07 fev. 2017. <http://dx.doi.org/10.1590/S1984-29612015021>. 1984-2961 http://repositorio.ufpa.br/jspui/handle/2011/7605 por Revista Brasileira de Parasitologia Veterinária Acesso Aberto application/pdf Universidade Federal do Pará Brasil UFPA
institution	Repositório Institucional - Universidade Federal do Pará
collection	RI-UFPA
language	por
topic	Myxozoa Infecção parasitária Peixe Bagre Hypophthalmus marginatus Histologia Parasita Pará - Estado Cametá - PA
spellingShingle	Myxozoa Infecção parasitária Peixe Bagre Hypophthalmus marginatus Histologia Parasita Pará - Estado Cametá - PA SILVA, Michele Velasco Oliveira da Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)
topic_facet	Myxozoa Infecção parasitária Peixe Bagre Hypophthalmus marginatus Histologia Parasita Pará - Estado Cametá - PA
description	This study describes aspects of the infection caused by the myxosporean genus Henneguya, which forms cysts in the bony portion of the gill filaments of Hypophthalmusmarginatus. Specimens of this catfish were acquired dead from artisanal fishermen near the town of Cametá, state of Pará, northern Brazil, between July 2011 and May 2012. They were transported in refrigerated containers to the Carlos Azevedo Research Laboratory at the Federal Rural University of Amazonia, in Belém, where analyses were performed. After confirmation of parasitism by the genus Henneguya, observation were made using optical and differential interference contrast (DIC) microscopy. The histological technique of embedment in paraffin was used. Ziehl-Neelsen staining was applied to the histological sections. Necropsy analyses on specimens of H. marginatus showed that 80% of them (40/50) had cysts of whitish coloration inside the bony portion of the gill filaments, filled with Henneguya spores. The present study found inflammatory infiltrate in the vicinity of the cysts. Furthermore, the special Ziehl-Neelsen staining technique made it possible to mark the Henneguya sp. cysts in the bone tissue and in spore isolates in the gill tissue structure. The descriptions of these histopathological findings show that this parasite is very invasive and causes damage to its host tissues.
format	Artigo
author	SILVA, Michele Velasco Oliveira da
author2	VIDEIRA, Marcela Nunes SINDEAUX NETO, José Ledamir SANTOS, Patricia dos SANCHES, Osimar de Carvalho MATOS, Patrícia Santos
author2Str	VIDEIRA, Marcela Nunes SINDEAUX NETO, José Ledamir SANTOS, Patricia dos SANCHES, Osimar de Carvalho MATOS, Patrícia Santos
title	Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)
title_short	Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)
title_full	Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)
title_fullStr	Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)
title_full_unstemmed	Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)
title_sort	infection by henneguya sp. (myxozoa) in the bone tissue of the gill filaments of the amazonian catfish hypophthalmus marginatus (siluriformes)
publisher	Universidade Federal do Pará
publishDate	2017
url	http://repositorio.ufpa.br/jspui/handle/2011/7605
_version_	1787149341609164800
score	11.653393

Infection by Henneguya sp. (Myxozoa) in the bone tissue of the gill filaments of the Amazonian catfish Hypophthalmus marginatus (Siluriformes)

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