Abstract
The effects of body size and season on oxygen consumption of C. gigas were studied. During larval development, oxygen consumption increased from 0.4 nl O 2 h −1 larva −1 (larvae with mean dry tissue weight of 70 ng) to 6.1 nl O 2 h −1 larva −1 (mean dry tissue weight of 1 360 ng). Oxygen uptake of larvae (ml O 2 h −1 larva −1) as a function of body size is described by the allometric equation VO 2=0.00282W 0.96 In adult oysters (0.03−1 741 mg dry tissue weight), the relationship between oxygen consumption — expressed as ml O 2 h −1 individual −1 — and body size is described by the allometric equation VO 2=0.00316W 0.77 Comparison of different trials showed a marked seasonal effect on oxygen uptake, with greater consumption rates in summer than in winter.
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