Changes in the ventilation volume and the amount of oxygen uptake were examined in the Mediterranean blue mussel Mytilus galloprovincialis with feeding Chaetoceros gracilis, at a density of 20,000 cells/ml. For the blue mussels without feeding, the ventilation volumes at 15, 20 and 24 ℃ were 2 .55, 4.46 and 6.01l/min/kg WW (per wet weight of soft part of body), respectively； for those with feeding they increased to 18 .4 (7.2 times that with feeding), 18 .6 (4.2 times) and 19.04 l/min/kg WW (3.2 times), respectively. The amount of oxygen uptakes with feeding at 15, 20 and 24 ℃ were about equivalent to those without feeding (0 .506 , 0 .683 and 0 .753ml/min/kg WW). These results suggested that the Mediterranean blue mussel with feeding increased the ventilation volume without an increase in the amount of oxygen uptake.
Mediterranean blue mussel
ciliary movement
feeding
oxygen uptake
ventilation
water temperature