Abnormalities in Chromodoris quadricolor

August 6, 2007
From: Eddy Mannak

Dear Bill,

I took this photo of Chromodoris quadricolor last June when I was on a diving holiday in Egypt.

You see a lot of these Chromodoris quadricolor here in Egypt, but this one is different. It has an extra flap of mantle in front of one of it's rhinophores. Seems to me he did not had a problem with it, because I never saw a Chromodoris quadricolor so big before. I hope you like the picture and wanted to share it with other people on your forum.

Locality: Hurghada, 25 metres, Egypt, Red Sea, 27 June 2007, El Mina (wreckdive)  Length: 60 mm. Photographer: Eddy Mannak.

Greetings from Holland,
Eddy Mannak

eddy.mannak@wanadoo.nl

Mannak, E., 2007 (Aug 6) Abnormalities in Chromodoris quadricolor. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20343

Dear Eddy,

Thanks for this interesting record. In the Abnormalities List we already have three other species of Chromodoris with this same abnormality -Chromodoris kuniei [messages #9996; #9918]; C. willani [ #20241];C. magnifica #10212]. It appears that one cell during development starts producing a piece of mantle edge. As you say, the size of your animal certainly suggests the abnormality is no problem for the animal.

I am interested in your mention of seeing many of this species. If you have photos of it on a possible food sponge I could be useful. It is usually found on a red sponge but in a recent message [#20150] Kamal el Tawil reports it feeding on a dark grey sponge. So any more feeding, or potential feeding, photos would be of value

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Aug 6). Comment on Abnormalities in Chromodoris quadricolor by Eddy Mannak. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20343

Factsheet

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