Tetramicra brevifilum, a potential threat to farmed turbot Scophthalmus maximus
9 pages, 14 figures. The development of turbot Scophthalmus maximus culture has resulted in an increase of pathological problems involving mainly bacteria1 infections. During 1990, mortalities were detected in some grow-out facilities in Galicia, Spain, and were attributed to the microsporidian Tetr...
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ftcsic:oai:digital.csic.es:10261/26135 2024-02-11T10:08:26+01:00 Tetramicra brevifilum, a potential threat to farmed turbot Scophthalmus maximus Figueras Huerta, Antonio Novoa, Beatriz Santarém, M. M. Martínez, Emili Álvarez, J. M. Toranzo, A. E. Dyková, Iva 1992-11 3226338 bytes application/pdf http://hdl.handle.net/10261/26135 en eng Inter Research http://www.int-res.com/abstracts/dao/v14/ Diseases of Aquatic Organisms 14: 127-135 (1992) 0177-5103 http://hdl.handle.net/10261/26135 open artículo http://purl.org/coar/resource_type/c_6501 1992 ftcsic 2024-01-16T09:27:37Z 9 pages, 14 figures. The development of turbot Scophthalmus maximus culture has resulted in an increase of pathological problems involving mainly bacteria1 infections. During 1990, mortalities were detected in some grow-out facilities in Galicia, Spain, and were attributed to the microsporidian Tetramicra brevifilum Matthews & Matthews, 1980. The outbreak lasted for 3 1/2 mo. The start of the outbreak was associated with a drop in temperature. Affected fish showed an erratic swimming behaviour, swelling of different parts of the body, darkening of the dorsal surface, and overproduction of mucus on the surface of the body. Fish with a high intensity of infection had jelly-like muscles. Small xenomas formed by T brevifilum were found to be associated with regressive changes of the host tissue, with agglomerations of mature spores eliciting sometimes inflammatory reaction of the host. The agglutinin titers detected in naturally infected fish were low. There was a light host response. Electrophoresis of sera from naturally infected fish showed an additional protein band (molecular weight: 128 kDa) not found in uninfected samples. Results suggest that although turbot infected with microsporidians are immunologically impaired, the immunodepression does not increase the susceptibility of fish to vibriosis. This work was supported by the Grant MAR91-1133- C02-02 from the Comisión lnterministenal de Ciencia y Tecnología (CICYT) Spain. B. Novoa acknowledges the Ministerio de Educación y Ciencia (Spain), and María Santarém the Junta Nacional de Investigaçio Científica e Tecnológica (Portugal), for research fellowships. Peer reviewed Article in Journal/Newspaper Scophthalmus maximus Turbot Digital.CSIC (Spanish National Research Council) |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
English |
description |
9 pages, 14 figures. The development of turbot Scophthalmus maximus culture has resulted in an increase of pathological problems involving mainly bacteria1 infections. During 1990, mortalities were detected in some grow-out facilities in Galicia, Spain, and were attributed to the microsporidian Tetramicra brevifilum Matthews & Matthews, 1980. The outbreak lasted for 3 1/2 mo. The start of the outbreak was associated with a drop in temperature. Affected fish showed an erratic swimming behaviour, swelling of different parts of the body, darkening of the dorsal surface, and overproduction of mucus on the surface of the body. Fish with a high intensity of infection had jelly-like muscles. Small xenomas formed by T brevifilum were found to be associated with regressive changes of the host tissue, with agglomerations of mature spores eliciting sometimes inflammatory reaction of the host. The agglutinin titers detected in naturally infected fish were low. There was a light host response. Electrophoresis of sera from naturally infected fish showed an additional protein band (molecular weight: 128 kDa) not found in uninfected samples. Results suggest that although turbot infected with microsporidians are immunologically impaired, the immunodepression does not increase the susceptibility of fish to vibriosis. This work was supported by the Grant MAR91-1133- C02-02 from the Comisión lnterministenal de Ciencia y Tecnología (CICYT) Spain. B. Novoa acknowledges the Ministerio de Educación y Ciencia (Spain), and María Santarém the Junta Nacional de Investigaçio Científica e Tecnológica (Portugal), for research fellowships. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Figueras Huerta, Antonio Novoa, Beatriz Santarém, M. M. Martínez, Emili Álvarez, J. M. Toranzo, A. E. Dyková, Iva |
spellingShingle |
Figueras Huerta, Antonio Novoa, Beatriz Santarém, M. M. Martínez, Emili Álvarez, J. M. Toranzo, A. E. Dyková, Iva Tetramicra brevifilum, a potential threat to farmed turbot Scophthalmus maximus |
author_facet |
Figueras Huerta, Antonio Novoa, Beatriz Santarém, M. M. Martínez, Emili Álvarez, J. M. Toranzo, A. E. Dyková, Iva |
author_sort |
Figueras Huerta, Antonio |
title |
Tetramicra brevifilum, a potential threat to farmed turbot Scophthalmus maximus |
title_short |
Tetramicra brevifilum, a potential threat to farmed turbot Scophthalmus maximus |
title_full |
Tetramicra brevifilum, a potential threat to farmed turbot Scophthalmus maximus |
title_fullStr |
Tetramicra brevifilum, a potential threat to farmed turbot Scophthalmus maximus |
title_full_unstemmed |
Tetramicra brevifilum, a potential threat to farmed turbot Scophthalmus maximus |
title_sort |
tetramicra brevifilum, a potential threat to farmed turbot scophthalmus maximus |
publisher |
Inter Research |
publishDate |
1992 |
url |
http://hdl.handle.net/10261/26135 |
genre |
Scophthalmus maximus Turbot |
genre_facet |
Scophthalmus maximus Turbot |
op_relation |
http://www.int-res.com/abstracts/dao/v14/ Diseases of Aquatic Organisms 14: 127-135 (1992) 0177-5103 http://hdl.handle.net/10261/26135 |
op_rights |
open |
_version_ |
1790607760806641664 |