| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Two Vibrio splendidus related strains collaborate to kill Crassostrea gigas: taxonomy and host alterations
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| Autores: |
Gay, Melanie
Renault, Tristan
Pons, Anne-marie
Le Roux, Frédérique
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| Data: |
2004-11
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| Ano: |
2004
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| Palavras-chave: |
Histopathology
Molecular taxonomy
Agonism
Vibriosis
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| Resumo: |
For several years, strains phenotypically related to Vibrio splendidus have been associated with mortality outbreaks of molluscs. A former study on Crassostrea gigas demonstrated the genetic diversity of V splendidus strains associated with diseased animals. Another study suggested that different strains may act in an additive/synergistic way leading to higher C. gigas mortality rates. Here, a strain pair (31+32) was characterised at taxonomic and virulence levels. Using a polyphasic approach, these strains were confirmed to be V splendidus-related, without a clear discrimination between V. kanaloae and V. pomeroyi since hybridisation rates with both these strains were above 70%. Following experimental infection of C. gigas by injection in the adductor muscle or in the pallial cavity, the host alterations induced were described. After injection of strains 31 and/or 32, bacteria were localised at the periphery of the muscle and induced extensive lesions of the translucent part of the adductor muscle. Muscle alterations were of 3 kinds: (1) presence of isolated rounded muscular fibres containing non-homogenous granular material and surrounded by a translucent halo; (2) presence of non-homogenous granular material in the cytoplasm of entire muscle bands; (3) affection of wide muscle areas with extremely condensed muscle fibres. Infiltration associated with these lesions was notably absent in the vast majority of the individuals.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2004/publication-2912.pdf
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| Editor: |
Inter-Research
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| Relação: |
http://archimer.ifremer.fr/doc/00000/2912/
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| Formato: |
application/pdf
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| Fonte: |
Diseases of aquatic organisms (0177-5103) (Inter-Research), 2004-11 , Vol. 62 , N. 1-2 , P. 65-74
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| Direitos: |
Inter-Research
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