Chromodoris luteorosea from below

October 12, 2003
From: Adam Petrusek

For those who are used to seeing sea slugs only from above I include an interesting photo of Chromodoris luteorosea from below. You can see nicely the foot, the mantle and probably some food (?) in the slug...

Locality: Adriatic sea, near Sumartin, island Brac, Croatia.
Date: September 7, 2003

Photographed in the aquarium during the Mediterranean Marine Fauna excursion of the Charles University, Prague. Photo: Martin Cerny.

All the best
Adam

petrusek@cesnet.cz

Thanks Adam,
It's good to get some unorthodox views of these animals to show anatomical features not usually seen. I've included a slightly manipulated image alongside to show the oral tentacles. The mouth, although not visible, is on the 'snout' that bears these tentacles. See also the dorid head Page.

The blackish lump in your full photo is not food in the stomach but the digestive gland, sometimes called a 'liver'. It is a uniquely molluscan organ and as its name suggests produces digestive enzymes which are used in the stomach to digest the food. The broken down food is then transported into the digestive gland where specialised cells absorb the food partcles and excrete leftover waste which moves down into the intestine and out of the body.

Although we have a few photos of this species in the Forum, if you have any dorsal photos of this species from Croatia, they would be an interesting addition. As you can see there appears to be some variation in colour pattern in this species.
Best wishes
Bill Rudman

Rudman, W.B., 2003 (Oct 12). Comment on Chromodoris luteorosea from below by Adam Petrusek. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11188

Factsheet

Chromodoris luteorosea

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