Pasteurellosis in cultured gilthead seabream (Sparus aurata): first report in Spain
15 pages, 3 figures, 3 tables The first documented epizootic of pasteurellosis in juvenile gilthead seabream (Sparus aurata) cultured in Spain is described. The affected fish showed no apparent surface lesions and only some of them displayed slight haemorrhagic areas in the head and gills. However,...
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ftcsic:oai:digital.csic.es:10261/295949 2024-02-11T10:08:27+01:00 Pasteurellosis in cultured gilthead seabream (Sparus aurata): first report in Spain Toranzo, A. E. Barreiro, Senén Fernández Casal, Jacobo Figueras Huerta, Antonio Magariños, Beatriz Barja, J. L. Xunta de Galicia 1991 http://hdl.handle.net/10261/295949 https://doi.org/10.1016/0044-8486(91)90284-E en eng Sí Aquaculture 99 (1-2) : 1-15 (1991) 0044-8486 http://hdl.handle.net/10261/295949 doi:10.1016/0044-8486(91)90284-E 1873-5622 none artículo 1991 ftcsic https://doi.org/10.1016/0044-8486(91)90284-E 2024-01-16T11:37:51Z 15 pages, 3 figures, 3 tables The first documented epizootic of pasteurellosis in juvenile gilthead seabream (Sparus aurata) cultured in Spain is described. The affected fish showed no apparent surface lesions and only some of them displayed slight haemorrhagic areas in the head and gills. However, fish often exhibited enlarged spleen with typical whitish tubercles. Losses of approximately 26 000 fingerlings (40% of the stock) occurred over a 4-week period (August–September 1990). Microbiological analysis of moribund fish revealed the presence in pure culture in all the organs examined of a bacterium which was characterized biochemically and serologically asPasteurella piscicida. The isolate was sensitive to most antimicrobial agents tested, and the epizootic was effectively controlled by oral administration of chloramphenicol and oxytetracycline. The virulence assays revealed that theP. piscicida isolate was pathogenic for gilthead seabream with a LD50 ranging from 1.6 × 105 to 9.5 × 105 (depending on the fish size), and also for turbot (Scophthalmus maximus) with LD50 ≤ 1.6 × 104. The failure to recover the inoculated strain from the survivor gilthead seabream indicates that the carrier state ofP. piscicida in the infected population cannot be demonstrated. The histopathological changes observed in the internal organs of diseased fish are typical of a bacterial septicaemia showing extensive, acute multifocal necrosis in spleen and kidney with large masses of bacterial cells This study was supported by grants PB-87-1027 and MAR 9 l- 1133~CO2-01 from the Dirección General de Investigación Científica y Técnica (DGICYT), and XUGA 8030389 from the Xunta de Galicia, Spain Peer reviewed Article in Journal/Newspaper Scophthalmus maximus Turbot Digital.CSIC (Spanish National Research Council) Aquaculture 99 1-2 1 15 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
description |
15 pages, 3 figures, 3 tables The first documented epizootic of pasteurellosis in juvenile gilthead seabream (Sparus aurata) cultured in Spain is described. The affected fish showed no apparent surface lesions and only some of them displayed slight haemorrhagic areas in the head and gills. However, fish often exhibited enlarged spleen with typical whitish tubercles. Losses of approximately 26 000 fingerlings (40% of the stock) occurred over a 4-week period (August–September 1990). Microbiological analysis of moribund fish revealed the presence in pure culture in all the organs examined of a bacterium which was characterized biochemically and serologically asPasteurella piscicida. The isolate was sensitive to most antimicrobial agents tested, and the epizootic was effectively controlled by oral administration of chloramphenicol and oxytetracycline. The virulence assays revealed that theP. piscicida isolate was pathogenic for gilthead seabream with a LD50 ranging from 1.6 × 105 to 9.5 × 105 (depending on the fish size), and also for turbot (Scophthalmus maximus) with LD50 ≤ 1.6 × 104. The failure to recover the inoculated strain from the survivor gilthead seabream indicates that the carrier state ofP. piscicida in the infected population cannot be demonstrated. The histopathological changes observed in the internal organs of diseased fish are typical of a bacterial septicaemia showing extensive, acute multifocal necrosis in spleen and kidney with large masses of bacterial cells This study was supported by grants PB-87-1027 and MAR 9 l- 1133~CO2-01 from the Dirección General de Investigación Científica y Técnica (DGICYT), and XUGA 8030389 from the Xunta de Galicia, Spain Peer reviewed |
author2 |
Xunta de Galicia |
format |
Article in Journal/Newspaper |
author |
Toranzo, A. E. Barreiro, Senén Fernández Casal, Jacobo Figueras Huerta, Antonio Magariños, Beatriz Barja, J. L. |
spellingShingle |
Toranzo, A. E. Barreiro, Senén Fernández Casal, Jacobo Figueras Huerta, Antonio Magariños, Beatriz Barja, J. L. Pasteurellosis in cultured gilthead seabream (Sparus aurata): first report in Spain |
author_facet |
Toranzo, A. E. Barreiro, Senén Fernández Casal, Jacobo Figueras Huerta, Antonio Magariños, Beatriz Barja, J. L. |
author_sort |
Toranzo, A. E. |
title |
Pasteurellosis in cultured gilthead seabream (Sparus aurata): first report in Spain |
title_short |
Pasteurellosis in cultured gilthead seabream (Sparus aurata): first report in Spain |
title_full |
Pasteurellosis in cultured gilthead seabream (Sparus aurata): first report in Spain |
title_fullStr |
Pasteurellosis in cultured gilthead seabream (Sparus aurata): first report in Spain |
title_full_unstemmed |
Pasteurellosis in cultured gilthead seabream (Sparus aurata): first report in Spain |
title_sort |
pasteurellosis in cultured gilthead seabream (sparus aurata): first report in spain |
publishDate |
1991 |
url |
http://hdl.handle.net/10261/295949 https://doi.org/10.1016/0044-8486(91)90284-E |
genre |
Scophthalmus maximus Turbot |
genre_facet |
Scophthalmus maximus Turbot |
op_relation |
Sí Aquaculture 99 (1-2) : 1-15 (1991) 0044-8486 http://hdl.handle.net/10261/295949 doi:10.1016/0044-8486(91)90284-E 1873-5622 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/0044-8486(91)90284-E |
container_title |
Aquaculture |
container_volume |
99 |
container_issue |
1-2 |
container_start_page |
1 |
op_container_end_page |
15 |
_version_ |
1790607794062229504 |