engleski

Oxygen consumption rate and Na+/K+-ATPase activity in early developmental stages of the sea urchin Paracentrotus lividus Lam.

Changes in oxygen consumption rate and Na+/K+- ATPase activity during early development were studied in the sea urchin Paracentrotus lividus Lam. The oxygen consumption rate increased from 0.12 μmol O2 mg protein−1 h−1 in unfertilized eggs to 0.38 μmol O2 mg protein−1 h−1 25 min after fertilization. Specific activity of the Na+/K+- ATPase was significantly stimulated after fertilization, ranging up to 1.07 μmol Pi h−1 mg protein−1 in the late blastula stage and slightly lower values in the early and late pluteus stages.

sea urchins – early developmental stages – oxygen consumption – Na+/K+-ATPase

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