Table 2.
Sites for in situ sampling of oysters and clams in 2018 and 2019, including location, bivalve species and number of samples collected each year.
| Location | Year | Dates | Bivalve Species | Number of Samples |
|---|---|---|---|---|
| Antifer * (Bay of Seine) |
2018 | From 12 July to 9 October (bi-weekly) | Oyster (C. gigas) |
7 |
| Géfosse (Bay of Veys) |
2018 2019 |
From 13 June to 24 October (bi-weekly) From 20 May to 26 September (bi-weekly) |
Oyster (C. gigas) |
10 9 |
| Pointe du Puits (Rance estuary) |
2018 2019 |
From 11 June to 6 August (weekly) From 3 June to 26 August (weekly) |
Oyster (C. gigas) |
9 13 |
| Ville Ger (Rance estuary) |
2018 2019 |
From 11 June to 6 August (weekly) From 3 June to 26 August (weekly) |
Clam (R. philippinarum) |
9 13 |
| Kersanton ** (Bay of Brest) |
2019 | From 16 May to 30 August (weekly) | Oyster (C. gigas) |
14 |
| Bouzigues (Thau lagoon) |
2019 | From 27 May to 28 August (weekly) | Oyster (C. gigas) |
14 |
* oysters were transferred from Géfosse and allowed to acclimate for one month before sampling as this is not a shellfish farming area but it matched the observations of Turner et al. [30]. ** oysters were sourced from the bay of Brest and acclimated for 14 days before starting the sampling. A second batch of oysters was used after an unexplained mortality event and collected after 18 days of acclimation.