Colour pattern change in growth of Chromodoris tinctoria

December 14, 2006
From: Philibert Bidgrain


Dear Bill,

I found this species from October to January on a rocky coast. Here are three photos: Upper: 2-3 mm long. Middle: 15 mm long. Lower:  40 mm. long.

Locality: Etang Salé, 1m, Reunion Island, Indian Ocean, Rocky coast. Photographer: Philibert Bidgrain

I think that all of these specimens are Chromodoris tinctoria, showing the development of the colour pattern as the animal grows. What's your opinion about this hypothesis?

Philibert Bidgrain
http://vieoceane.free.fr/runseaslug/indexslug.htm.

pbidgrain@yahoo.fr

Bidgrain, P., 2006 (Dec 14) Colour pattern change in growth of Chromodoris tinctoria . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/18942

Dear Philibert,
I agree these are all C. tinctoria. Often small juveniles are difficult to identify unless you are familiar with the colour pattern of the sub adult animals. The red spots which develop into patches around the mantle edge in Indian ocean specimens are not always present in Western Pacific animals.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Dec 14). Comment on Colour pattern change in growth of Chromodoris tinctoria by Philibert Bidgrain. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/18942

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Chromodoris tinctoria

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