Oyster Mortality Report France 2017

 

Update from Ifremer bulletin dated 04/07/17:

Average cumulative mortality rate of 60.5% on national level for seed oysters with high regional fluctuation. Juvenile and adult oysters are reported as having much lower mortality rates (3.2% and 2.0% respectively) although higher than previous months

Update from Ifremer bulletin dated 31/05/17:
Average mortality rate of 27.9% on national level for seed oysters with high regional fluctuation (Thau 78%; Gefosse, Blainville, Cancale, Morlaix and Coupelasse < 1.4%).
Juvenile and adult oysters are reported as having much lower rates (1.2% and 0.9% respectively)

update from Ifremer bulletin 17/05:
1st seed oyster mortality rise observed by Ifremer in the South West (Arcachon – 25.6%) and in Brittany (Brest 26.1%). But the highest level of mortality in Thau at 77%. Juvenile and adults relatively spared for the moment.
Finnian O’Luasa, Bord Bia Paris

2 Replies to “Oyster Mortality Report France 2017”

    1. “Standardised dîploid Ifremer seed” so not produced by a commercial hatchery is my understanding. Ifremer produce test batches which they relay in 12 different site throughout France for their National Shelfish Observation Network.

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