Juvenile and subadult Geitodoris planata

October 12, 2009
From: Marina Poddubetskaia Ossokine

Concerning message #15692:

Bill,

To continue my previous message [#22693], here are other growth stages of Geitodoris planata:

The upper photo shows a 23 mm long subadult. It was found under the same rock and on the same sponge as the the 22 mm long specimen in the lower photo. They represent the extreme variation in this species :
- upper photo: presence of acid glands, no spots under the mantle
- lower: no acid glands (checked with binocular), with spots under the mantle

Locality: 'Hortense', Cap Ferret, Arcachon Bay, 5 m, France, Atlantic Ocean, 10 October 2009. Length: 23 mm + 22mm. Photographer: Marina Poddubetskaia.

The middle photos show two 30 mm long subadults with the beginning of brown coloration.
Locality: 'Grand Piquey', Cap Ferret, Arcachon Bay, 2 m, France, Atlantic Ocean, 14 September 2005. Length: 30 mm. Photographer: Marina Poddubetskaia.

Best wishes,
Marina.

nembro@yahoo.fr

Poddubetskaia Ossokine, M., 2009 (Oct 12) Juvenile and subadult Geitodoris planata. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22695

Dear Marina,

Thanks for more photos showing the variability found in this common species. A range of photos like this makes it much easier to show how the colour pattern of one animal is linked to that of another. I think we can be fakry confident that Fabio's animal is a juvenile of this species.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Oct 12). Comment on Juvenile and subadult Geitodoris planata by Marina Poddubetskaia Ossokine. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22695

Factsheet

Geitodoris planata

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