Marsan

Country:Spain
Site:Exposed. Stock reared on long-lines with trays.
Shellfish
Stock species:Oysters

Monthly spatfalls


Key to spatfall groups

Key

Algae recruited all year other than July. Hydroids recruited all year; Tubularia sp. in October. Tube-forming amphipods recruited all year other than January, barnacles recruited in June. Blue mussels recruited in May and in June. Other than in January, February and September, ascidians recruited all year.

Community development

Dominant Species

  • tube-forming amphipods and polychaetes

Changes in Wet Weight

The weight increases and decreases in the fouling did not follow a pattern - intense grazing may be the cause.