Re: Aldisa sp. 4 from Madagascar

November 27, 2009
From: Les Clear

Concerning message #22881:

Hi Bill,

No the lovely blue colour was the pigment, which is how my wife spotted it in the first place. I was just using a very simple reef master camera.
Regards
Les

ann.clear@btinternet.com

Clear, L, 2009 (Nov 27) Re: Aldisa sp. 4 from Madagascar. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22895

Thanks Les,

It's certainly a spectacular colour. Looking more closely at Valda Fraser's upper photo on the Fact Sheet I can see a few of whitish blue spots on that animal as well. Perhaps this species exudes bluish-white secretions from small glands in the skin. If so the blue patches could well be such secretions - but that's just a guess - but it would explain why some animals don't show blue 'spots' and others don't.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Nov 27). Comment on Re: Aldisa sp. 4 from Madagascar by Les Clear. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22895

Factsheet

Aldisa sp. 4

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