Abstract

Using the method of nuclear magnetic-resonance spectroscopy, lactic acid, alanine, and aspartate were revealed in the coelomic fluid of the black sea urchin Mesocentrotus nudus, which indicates anaerobic metabolism in echinoderms. Energy metabolism of this type is intensified in stressful situations, when the inflow of oxygen into cells becomes insufficient. This compensatory response of energy metabolism is an important mechanism for adaptation to changing environmental conditions.

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