Re: Discodoris rosi from the french Mediterranean

March 2, 2009
From: Dominique Horst

Concerning message #13989:

Hi Bill,

I suppose this is a colour variation of Discodoris rosi without the white rings around the darker patches. The base of the rhinophores are quite transparent.

The egg-mass was on the sponge where they usually feed, with no other slug, so I've supposed that it is their egg ribbon.

Locality: Cagnes, 23 m, France, Mediterranean sea, 28 February 2009. Length: 30 mm. Photographer: Dominique Horst.

Kind regards,
Dom.

dominique.horst@wanadoo.fr

Horst, D., 2009 (Mar 2) Re: Discodoris rosi from the french Mediterranean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22302

Dear Dom,

This animal certainly looks as though it could be Discodoris rosi. I have included a close-up which shows the dark patches. I agree that is missing is the white ring that normally outlines these dark patches.

Interestingly your animal seems to be the same as the one in Sandrine Bielecki's recent message [#22174] which I tentatively identifed as Carminodoris boucheti. Both here animal and yours seem to be on the same sponge, which in both cases seems to have tall cylindrical outgrowths. Perhaps this sponge is an encrusting sponge and the tall outgrowths are just tubes or branches of another animal or plant that the sponge has overgrown? If so, it could possibly be a Microciona, like the one identified by Bernard Picton in Mark Warren's message [#21943 ]. I would be grateful for any feedback from local experts.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Mar 2). Comment on Re: Discodoris rosi from the french Mediterranean by Dominique Horst. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22302

Factsheet

Discodoris rosi

Related messages

  1. Re: First record of Discodoris rosi from the UK
    From: David Kipling, October 1, 2009
  2. Re: Discodoris rosi from French Mediterranean
    From: M. Poddubetskaia Ossokine, April 2, 2009
  3. Re: Discodoris rosi laying egg mass ribbon
    From: Dominique Horst, March 10, 2009
  4. Baptodoris cinnabarina ? from French Mediterranean
    From: Sandrine Bielecki, February 13, 2009
  5. First record of Discodoris rosi from the UK
    From: Mark Warren, October 15, 2008
  6. Discodoris rosi from Slovenia
    From: Tom Turk, June 13, 2005
  7. Re: Discodoris rosi from nthn Spain
    From: Alma Sanchez, March 1, 2004
  8. Discodoris rosi from nthn Spain
    From: Ricardo Roberto Fernández, February 27, 2004
  9. Discodoris rosi from French Brittany
    From: Marina Poddubetskaia, September 27, 2002

Show factsheet and all related messages