Re: Phyllidiella meandrina from Mayotte Island

November 27, 2009
From: Matthias Deuss

Concerning message #22766:

Dear Bill,

about the colours of Phyllidiella species, I totally agree and I would like to add that the two specimens of my earlier message, although appearing pink on the pictures, were in fact green-turquoise ! It is perhaps a defect of my cheap underwater camera, but I tried several manipulations including natural daylight and all the pictures were green.

Is it real pigments or some kind of light distorsion that colours those animals ?

Thanks,
Matthias Deuss

matthias976@hotmail.fr

Deuss, M., 2009 (Nov 27) Re: Phyllidiella meandrina from Mayotte Island. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22889

Dear Matthias,

That's interesting. If your eyes thought they were green and the camera recorded them as green it could suggest a flash effect or some other physical factor but I have seen them in dish in the lab going from one to the other so I dont think its a simple light distortion affect. The other possibility is that it is something to do with their skin secretions but if so I have no idea how. I don't think anyone has researched this so it might be an interesting project for someone - certainly Phyllidiella can be extremely common so there would be no shortage of material to work on

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Nov 27). Comment on Re: Phyllidiella meandrina from Mayotte Island by Matthias Deuss. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22889

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