Fig. 3
Mytilus edulis (Askö). a Mean individual filtration rates (F, ml min−1) of mussels (#7, Table 4) locally adapted to 6.5 psu at Askö and initially acclimatized to 20 psu for 7 days in the laboratory and then acutely re-exposed to 6.5 psu on day 0 (vertical line) before they again were exposed to 20 psu. b Repetition of the above experiment, but with a new group of mussels (#8, Table 4). The punctured lines fitted by eye indicate the behaviour of F during the experiments. ±SD indicated