Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae)
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional do INPA |
Texto Completo: | https://repositorio.inpa.gov.br/handle/1/16445 |
Resumo: | Piscinoodinium sp. (Protozoa, Dinoflagellida) was commonly found on routine smears of samples of Brochis splendens and Corydoras spp. imported into Britain from South America, and on samples of the same group of fish examined at the exporters' holding facilities in Brazil. Infected fish had trophonts of different sizes on the gills and skin. In histological sections of the skin, the trophonts were found to be attached within depressions of different depths or enclosed by hyperplastic epithelial cells. Such enclosed trophonts have not previously been reported. Since some of the enclosed trophonts were dead, it was thought that enclosure was a result of the deep penetration of the trophont and the host defence mechanism. On the gills the Piscinoodinium infection was commonly associated with epithelial hypertrophy, focal and diffuse hyperplasia, oedema of the respiratory epithelium and lamellar fusion. The presence of this protozoan on different species of fish from the same shipment suggests that the infection was acquired before export. The source of infection and the stages of the export process which expose the fish to the highest risk of infection are discussed. |
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Ferraz, E.SOMMERVILLE, CHRISTINA2020-06-05T18:34:33Z2020-06-05T18:34:33Z1998https://repositorio.inpa.gov.br/handle/1/1644510.3354/dao033043Piscinoodinium sp. (Protozoa, Dinoflagellida) was commonly found on routine smears of samples of Brochis splendens and Corydoras spp. imported into Britain from South America, and on samples of the same group of fish examined at the exporters' holding facilities in Brazil. Infected fish had trophonts of different sizes on the gills and skin. In histological sections of the skin, the trophonts were found to be attached within depressions of different depths or enclosed by hyperplastic epithelial cells. Such enclosed trophonts have not previously been reported. Since some of the enclosed trophonts were dead, it was thought that enclosure was a result of the deep penetration of the trophont and the host defence mechanism. On the gills the Piscinoodinium infection was commonly associated with epithelial hypertrophy, focal and diffuse hyperplasia, oedema of the respiratory epithelium and lamellar fusion. The presence of this protozoan on different species of fish from the same shipment suggests that the infection was acquired before export. The source of infection and the stages of the export process which expose the fish to the highest risk of infection are discussed.Volume 33, Número 1, Pags. 43-49Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessBacterial InfectionBrochis SplendensCorydorasDiffuse HyperplasiaEdemaEpithelium HypertrophyFocal HyperplasiaHost ResistancePathogenicityPiscinoodiniumSouth AmericaBacteria (microorganisms)Brochis SplendensCallichthyidaeCorydorasDinophyceaePiscesPiscinoodiniumProtozoaSiluridaePathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae)info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleDiseases of Aquatic Organismsengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfartigo-inpa.pdfapplication/pdf1758712https://repositorio.inpa.gov.br/bitstream/1/16445/1/artigo-inpa.pdfeb132abb80434c3b60a49524dc30e80aMD511/164452020-06-05 15:26:04.395oai:repositorio:1/16445Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-06-05T19:26:04Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false |
dc.title.en.fl_str_mv |
Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae) |
title |
Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae) |
spellingShingle |
Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae) Ferraz, E. Bacterial Infection Brochis Splendens Corydoras Diffuse Hyperplasia Edema Epithelium Hypertrophy Focal Hyperplasia Host Resistance Pathogenicity Piscinoodinium South America Bacteria (microorganisms) Brochis Splendens Callichthyidae Corydoras Dinophyceae Pisces Piscinoodinium Protozoa Siluridae |
title_short |
Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae) |
title_full |
Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae) |
title_fullStr |
Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae) |
title_full_unstemmed |
Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae) |
title_sort |
Pathology of Piscinoodinium sp. (Protozoa: Dinoflagellida), parasites of the ornamental freshwater catfishes Corydoras spp. and Brochis splendens (Pisces: Callichthyidae) |
author |
Ferraz, E. |
author_facet |
Ferraz, E. SOMMERVILLE, CHRISTINA |
author_role |
author |
author2 |
SOMMERVILLE, CHRISTINA |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Ferraz, E. SOMMERVILLE, CHRISTINA |
dc.subject.eng.fl_str_mv |
Bacterial Infection Brochis Splendens Corydoras Diffuse Hyperplasia Edema Epithelium Hypertrophy Focal Hyperplasia Host Resistance Pathogenicity Piscinoodinium South America Bacteria (microorganisms) Brochis Splendens Callichthyidae Corydoras Dinophyceae Pisces Piscinoodinium Protozoa Siluridae |
topic |
Bacterial Infection Brochis Splendens Corydoras Diffuse Hyperplasia Edema Epithelium Hypertrophy Focal Hyperplasia Host Resistance Pathogenicity Piscinoodinium South America Bacteria (microorganisms) Brochis Splendens Callichthyidae Corydoras Dinophyceae Pisces Piscinoodinium Protozoa Siluridae |
description |
Piscinoodinium sp. (Protozoa, Dinoflagellida) was commonly found on routine smears of samples of Brochis splendens and Corydoras spp. imported into Britain from South America, and on samples of the same group of fish examined at the exporters' holding facilities in Brazil. Infected fish had trophonts of different sizes on the gills and skin. In histological sections of the skin, the trophonts were found to be attached within depressions of different depths or enclosed by hyperplastic epithelial cells. Such enclosed trophonts have not previously been reported. Since some of the enclosed trophonts were dead, it was thought that enclosure was a result of the deep penetration of the trophont and the host defence mechanism. On the gills the Piscinoodinium infection was commonly associated with epithelial hypertrophy, focal and diffuse hyperplasia, oedema of the respiratory epithelium and lamellar fusion. The presence of this protozoan on different species of fish from the same shipment suggests that the infection was acquired before export. The source of infection and the stages of the export process which expose the fish to the highest risk of infection are discussed. |
publishDate |
1998 |
dc.date.issued.fl_str_mv |
1998 |
dc.date.accessioned.fl_str_mv |
2020-06-05T18:34:33Z |
dc.date.available.fl_str_mv |
2020-06-05T18:34:33Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://repositorio.inpa.gov.br/handle/1/16445 |
dc.identifier.doi.none.fl_str_mv |
10.3354/dao033043 |
url |
https://repositorio.inpa.gov.br/handle/1/16445 |
identifier_str_mv |
10.3354/dao033043 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Volume 33, Número 1, Pags. 43-49 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Diseases of Aquatic Organisms |
publisher.none.fl_str_mv |
Diseases of Aquatic Organisms |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional do INPA instname:Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA |
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Instituto Nacional de Pesquisas da Amazônia (INPA) |
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INPA |
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INPA |
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Repositório Institucional do INPA |
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Repositório Institucional do INPA |
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https://repositorio.inpa.gov.br/bitstream/1/16445/1/artigo-inpa.pdf |
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