Re: Paradoris indecora from the Adriatic

November 9, 2006
From: Cristian Magnani

Concerning message #17679:

Dear Bill
In order to confirm your suggestion about food sponge, I checked all the pictures I took on last June 24 and realized the picture I sent you was the only one where a slug was on a dark sponge. This in spite I saw several specimens in a quite a restricted area.

But then, checking the pictures taken on July 8, I found another photo of a specimen on the same sponge and a picture of eggs coils too. So I guess you were right!

Locality: Numana, 8 metres, Italy, Adriatic Sea, 08 July 2006, on rocks. Length: 40 mm. Photographer: Cristian Magnani.

Just to add some more information on this species: typically this nudibranch, in our area, is seen for a very short time ( not more than 3 weeks from the end of June to the beginning of July) and only in a couple of dive sites.
Best regards
Cristian
http://www.nudibranchi.it/Eng_main.htm

info@nudibranchi.it

Magnani, C., 2006 (Nov 9) Re: Paradoris indecora from the Adriatic. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/18250

Dear Cristian,
Thanks for the further information. It certainly seems the sponge may be worth looking out for in the future. I have added a close-up of the sponge texture, in case someone wants to identify it in the future, and a close-up showing the mantle to show the consistent patterning of patches of black specks, which certainly can be overlooked. Hopefully someone will be able to confirm this animal's identity.

If the eggs prove to belong to this dorid, then there large size would suggest the larvae hatch out either as crawling young or as non-feeding veliger larvae, which spend only a short time in the plankton.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Nov 9). Comment on Re: Paradoris indecora from the Adriatic by Cristian Magnani. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/18250

Factsheet

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