DOI:10.1051/alr:2004049 www.edpsciences.org/alr Aquatic Living Resources Viruses infecting bivalve molluscs

• Main Authors: Tristan Renault, Beatriz Novoa
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Pacific; Pacific oyster
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.618.7290; http://archimer.ifremer.fr/doc/2004/publication-2910.pdf

Abstract – Bivalve molluscs are filter feeders and as a consequence they may bioaccumulate in their tissues viruses that infect humans and higher vertebrates. However, there have also been described mortalities of bivalve molluscs asso-ciated with viruses belonging to different families. Mass mortalities of adult Portuguese oysters, Crassostrea angulata, among French livestocks (between 1967 and 1973) were associated with irido-like virus infections. Herpesviruses were reported in the eastern oyster, Pacific oyster and European flat oyster and lately in scallops and clams. Disseminated neoplasia, a proliferative cell disorder of the circulatory system of bivalves, although of uncertain aetiology, has been suggested to be caused by retroviral infections. Other viruses described in bivalves are interpreted as members of the Papovaviridae, Togaviridae, Reoviridae, Birnaviridae and Picornaviridae. However, the lack of bivalve cell lines renders difficult virus isolation from molluscs although some viruses can be isolated in fish cell lines. Key words: Bivalves /Molluscs / Virus / Infection Résumé – Infections virales affectant les coquillages. Les mollusques bivalves sont des filteurs et de ce fait peuvent accumuler dans leurs tissus des virus d’origine anthropique. Par ailleurs, des mortalités ont été constatées chez des bivalves en association à la détection de virus apparentés à différentes familles. Ainsi, les mortalités massives d’huîtres portugaises, Crassostrea angulata, observées en France, de 1967 à 1973, ont été associées à la présence de virus apparentés aux Iridoviridae. Des virus de type herpès ont été détectés chez l’huître américaine, l’huître creuse