Re: Chromodoris annae - Strange discovery

May 7, 2002
From: Brian K. Penney

Bill-
I agree with your suggestion that the digital camera memory being overloaded, etc. is the most likely possibility. However, there is a paper that describes the blue pigments of Hypselodoris zebra [as Chromodoris zebra] changing color based on local redox potential. These experiments were in a test tube, not the animal, but the author claims that nudibranch blood pH creates an appropriate environment for such a reversible reaction. See:
• Preisler, P. W. 1930. Oxidation-reduction potentials and the possible respiratory significance of the pigment of the nudibranch Chromodoris zebra. Journal of General Physiology, 13: 349-359.

Cheers!
Brian

bpenney@ualberta.ca

Penney, B.K., 2002 (May 7) Re: Chromodoris annae - Strange discovery. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6890

Thanks Brian,
Bill Rudman

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