Data/hora: 01/06/2024 19:03:14

Provedor de dados: | 5
País: | France
Título: | Fine-scale temporal dynamics of herpes virus and vibrios in seawater during a polymicrobial infection in the Pacific oyster Crassostrea gigas
Autores: | Petton, Bruno; De Lorgeril, Julien; Mitta, Guillaume; Daigle, Gaétan; Pernet, Fabrice; Alunno Bruscia, Marianne.
Data: | 2019
Ano: | 2019
Palavras-chave: | Aquaculture; Bivalve; Epidemiology; Health; Polymicrobial disease; OSHV-1; Pacific oyster mortality syndrome; POMS.
Resumo: | The Pacific oyster Crassostrea gigas is currently being impacted by a polymicrobial disease that involves early viral infection by ostreid herpesvirus-1 (OsHV-1) followed by a secondary bacterial infection leading to death. A widely used method of inducing infection consists of placing specific pathogen-free oysters (‘recipients’) in cohabitation in the laboratory with diseased oysters that were naturally infected in the field (‘donors’). With this method, we evaluated the temporal dynamics of pathogen release in seawater and the cohabitation time necessary for disease transmission and expression. We showed that OsHV-1 and Vibrio spp. in the seawater peaked concomitantly during the first 48 h and decreased thereafter. We found that 1.5 h of cohabitation with donors was enough time to transmit pathogens to recipients and to induce mortality later, reflecting the highly contagious nature of the disease. Finally, mortality of recipients was associated with increasing cohabitation time with donors until reaching a plateau at 20%. This reflects the cumulative effect of exposure to pathogens. The optimal cohabitation time was 5−6 d, the mortality of recipients occurring 1−2 d earlier.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00507/61870/65940.pdf

https://archimer.ifremer.fr/doc/00507/61870/65941.pdf

DOI:10.3354/dao03384

https://archimer.ifremer.fr/doc/00507/61870/

Editor: | Inter-Research
Formato: | application/pdf
Fonte: | Diseases Of Aquatic Organisms (0177-5103) (Inter-Research), 2019 , Vol. 135 , N. 2 , P. 97-106

Fonte:

info:eu-repo/semantics/openAccess

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