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. 1984;78(2):349-52.
doi: 10.1016/0742-8413(84)90096-3.

Copper-stimulated respiration in the unfertilized egg of the Eurasian perch, Perca fluviatilis (L)

H B Akberali, M J Earnshaw

Copper-stimulated respiration in the unfertilized egg of the Eurasian perch, Perca fluviatilis (L)

H B Akberali et al. Comp Biochem Physiol C Comp Pharmacol Toxicol. 1984.

Abstract

The addition of Cu2+ (0.1-1.0 mM) to respiring, unfertilized eggs produced a marked stimulation in the rate of respiration whereas Zn2+ had no effect over the same concentration range. In the absence of Cu2+, temperature had little effect on unfertilized egg respiration but the Cu2+ stimulated respiratory rate showed the more normal response with a Q10 of 1.86 (10-20 degrees C). It appears that perch egg respiration is rate-limited by a physical event and it is suggested that Cu2+ may act by dissipating an oxygen permeability barrier located at the chorion.

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