Abnormal mortality events of Crassostrea gigas adults are reported in most French oyster production areas
In 2012, some abnormal mortality events of adults Crassostrea gigas occurred in several oyster producing areas in France. These mortality outbreaks were associated with the detection of Vibrio aestuarianus.
Since July this year, similar events have been observed in adults and to a lesser extent in juveniles (#18months old) in all the main French producing areas.
High amount of Vibrio aestuarianus is usually detected in moribund oysters (direct detection by real time TaqMan PCR assay described in the SOPs page).