autotrophic picoeukaryote Picochlorum sp, was observed in 2018–2019 in the Thau lagoon.
Oyster farmers informed decision-makers and scientists about an alarming halt to growth,
loss of flesh weight and abnormal mortality in commercial size oysters, whereas mussel
farmers observed no adverse effects. Two hypotheses were tested. First, Mediterranean
mussels are capable of filtering Picochlorum spp. whereas Pacific and flat oysters are not …