Data/hora: 11/06/2024 10:48:48

Provedor de dados: 	5	
País: 	France	
Título: 	Temperature modulate disease susceptibility of the Pacific oyster Crassostrea gigas and virulence of the Ostreid herpesvirus type 1	
Autores: 	Delisle, Lizenn; Petton, Bruno; Burguin, Jean Francois; Morga, Benjamin; Corporeau, Charlotte; Pernet, Fabrice.	
Data: 	2018-09	
Ano: 	2018	
Palavras-chave: 	Bivalve; Health; Marine disease; Mortality risk; Temperature; Virulence.	
Resumo: 	Temperature triggers marine diseases by changing host susceptibility and pathogen virulence. Oyster mortalities associated with the Ostreid herpesvirus type 1 (OsHV-1) have occurred seasonally in Europe when the seawater temperature range reaches 16–24 °C. Here we assess how temperature modulates oyster susceptibility to OsHV-1 and pathogen virulence. Oysters were injected with OsHV-1 suspension incubated at 21 °C, 26 °C and 29 °C and were placed in cohabitation with healthy oysters (recipients) at these three temperatures according to a fractional factorial design. Survival was followed for 14 d and recipients were sampled for OsHV-1 DNA quantification and viral gene expression. The oysters were all subsequently placed at 21 °C to evaluate the potential for virus reactivation, before being transferred to oyster farms to evaluate their long-term susceptibility to the disease. Survival of recipients at 29 °C (86%) was higher than at 21 °C (52%) and 26 °C (43%). High temperature (29 °C) decreased the susceptibility of oysters to OsHV-1 without altering virus infectivity and virulence. At 26 °C, the virulence of OsHV-1 was enhanced. Differences in survival persisted when the recipients were all placed at 21 °C, suggesting that OsHV-1 did not reactivate. Additional oyster mortality followed the field transfer, but the overall survival of oysters infected at 29 °C remained higher.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00442/55337/56847.pdf

DOI:10.1016/j.fsi.2018.05.056

https://archimer.ifremer.fr/doc/00442/55337/	
Editor: 	Academic Press Ltd- Elsevier Science Ltd	
Relação: 	info:eu-repo/grantAgreement/EC/FP7/678589/EU//VIVALDI	
Formato: 	application/pdf	
Fonte: 	Fish &amp; Shellfish Immunology (1050-4648) (Academic Press Ltd- Elsevier Science Ltd), 2018-09 , Vol. 80 , P. 71-79	
Fonte: 	2018 Elsevier Ltd. All rights reserved.

info:eu-repo/semantics/openAccess

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