First isolation of Nocardia crassostreae from Pacific oysters (Crassostrea gigas) in Europe
In summer 2006 an extensive mortality of Pacific oysters Crassostrea gigas occurred in Lake Grevelingen, the Netherlands. A sample of Pacific oysters was investigated for the presence of shellfish pathogens as potential causes of the mortality. Yellow-green lesions were observed in several oysters u...
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ftunivwagenin:oai:library.wur.nl:wurpubs/370972 2024-02-04T09:59:46+01:00 First isolation of Nocardia crassostreae from Pacific oysters (Crassostrea gigas) in Europe Engelsma, M.Y. Roozenburg, I. Joly, J.P. 2008 application/pdf https://research.wur.nl/en/publications/first-isolation-of-nocardia-crassostreae-from-pacific-oysters-cra https://doi.org/10.3354/dao01938 en eng https://edepot.wur.nl/39815 https://research.wur.nl/en/publications/first-isolation-of-nocardia-crassostreae-from-pacific-oysters-cra doi:10.3354/dao01938 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Diseases of Aquatic Organisms 80 (2008) 3 ISSN: 0177-5103 bay summer mortality thunberg info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2008 ftunivwagenin https://doi.org/10.3354/dao01938 2024-01-10T23:24:06Z In summer 2006 an extensive mortality of Pacific oysters Crassostrea gigas occurred in Lake Grevelingen, the Netherlands. A sample of Pacific oysters was investigated for the presence of shellfish pathogens as potential causes of the mortality. Yellow-green lesions were observed in several oysters upon clinical inspection. Histopathology showed that 6 out of 36 oysters had a suspected bacterial infection, including 4 Nocardia-like infections. Two bacterial species, Vibrio aestuarianus and Nocardia crassostreae, were isolated from haemolymph samples and identified using PCR and sequencing of the 16S rRNA gene. This is the first isolation of N. crassostreae from shellfish in European waters. The near full-length 16S rRNA sequence of this Dutch Nocardia sp. isolate was identical to other known N. crassostreae isolates from the west coast of North America. The primary cause of oyster mortality was thought to be the physiological stress from environmental conditions, including prolonged high water temperatures and low oxygen levels. The multiple bacterial species isolated from the diseased Pacific oysters may have been a secondary cause. Article in Journal/Newspaper Crassostrea gigas Wageningen UR (University & Research Centre): Digital Library Pacific Diseases of Aquatic Organisms 80 229 234 |
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Open Polar |
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Wageningen UR (University & Research Centre): Digital Library |
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ftunivwagenin |
language |
English |
topic |
bay summer mortality thunberg |
spellingShingle |
bay summer mortality thunberg Engelsma, M.Y. Roozenburg, I. Joly, J.P. First isolation of Nocardia crassostreae from Pacific oysters (Crassostrea gigas) in Europe |
topic_facet |
bay summer mortality thunberg |
description |
In summer 2006 an extensive mortality of Pacific oysters Crassostrea gigas occurred in Lake Grevelingen, the Netherlands. A sample of Pacific oysters was investigated for the presence of shellfish pathogens as potential causes of the mortality. Yellow-green lesions were observed in several oysters upon clinical inspection. Histopathology showed that 6 out of 36 oysters had a suspected bacterial infection, including 4 Nocardia-like infections. Two bacterial species, Vibrio aestuarianus and Nocardia crassostreae, were isolated from haemolymph samples and identified using PCR and sequencing of the 16S rRNA gene. This is the first isolation of N. crassostreae from shellfish in European waters. The near full-length 16S rRNA sequence of this Dutch Nocardia sp. isolate was identical to other known N. crassostreae isolates from the west coast of North America. The primary cause of oyster mortality was thought to be the physiological stress from environmental conditions, including prolonged high water temperatures and low oxygen levels. The multiple bacterial species isolated from the diseased Pacific oysters may have been a secondary cause. |
format |
Article in Journal/Newspaper |
author |
Engelsma, M.Y. Roozenburg, I. Joly, J.P. |
author_facet |
Engelsma, M.Y. Roozenburg, I. Joly, J.P. |
author_sort |
Engelsma, M.Y. |
title |
First isolation of Nocardia crassostreae from Pacific oysters (Crassostrea gigas) in Europe |
title_short |
First isolation of Nocardia crassostreae from Pacific oysters (Crassostrea gigas) in Europe |
title_full |
First isolation of Nocardia crassostreae from Pacific oysters (Crassostrea gigas) in Europe |
title_fullStr |
First isolation of Nocardia crassostreae from Pacific oysters (Crassostrea gigas) in Europe |
title_full_unstemmed |
First isolation of Nocardia crassostreae from Pacific oysters (Crassostrea gigas) in Europe |
title_sort |
first isolation of nocardia crassostreae from pacific oysters (crassostrea gigas) in europe |
publishDate |
2008 |
url |
https://research.wur.nl/en/publications/first-isolation-of-nocardia-crassostreae-from-pacific-oysters-cra https://doi.org/10.3354/dao01938 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
Diseases of Aquatic Organisms 80 (2008) 3 ISSN: 0177-5103 |
op_relation |
https://edepot.wur.nl/39815 https://research.wur.nl/en/publications/first-isolation-of-nocardia-crassostreae-from-pacific-oysters-cra doi:10.3354/dao01938 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.3354/dao01938 |
container_title |
Diseases of Aquatic Organisms |
container_volume |
80 |
container_start_page |
229 |
op_container_end_page |
234 |
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1789964749287456768 |