Colour compounds in opisthobranchs

June 22, 2002
From: Virginie Fruh

Just wondering if anyone could send me information or post a reply concerning what types of compounds are known to be active in the colouration of nudibranch mantles. I know that symbiosis with dinoflagellates is one of the sources of the colouration, but is it for all the colours, or are there carotenoids and others which are involved?

Fruh, V., 2002 (Jun 22) Colour compounds in opisthobranchs. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Virginie,
I gave a very brief comment some time ago to a similar question. If anyone can send a more detailed reply to the Forum it would be a useful addition
Bill Rudman

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