Janolus cristatus from Portugal

January 12, 2006
From: David Abecasis

Dear Dr. Bill,
I know that unfortunately you are not receiving any messages anyway I had just come out of the water and I was very excited with the photos I have taken of this nudibranch so I'll try my luck. I have been looking around in some books and at your site but I couldn't confirm anything. I think that it might be a Zephyrinidae.

PS: these photos were taken at the Algarve (South Portugal) at a depth of 13 meters. It was on a rocky bottom covered with a fine sand. 20 December 2005

Thanks,
David Abecasis

dabecassis@ualg.pt

Abecasis, D., 2006 (Jan 12) Janolus cristatus from Portugal. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15531

Dear David,
Sorry I couldn't answer before Christmas but the site was 'in pieces'. This nice little animal is certainly a zephyrinid and almost certainly Janolus cristatus. There are not that many zephyrinids known from that part of the world and the branching digestive gland at the tips of the cerata which I can see in the photo alongside would seem to confirm its identity.

I am not sure but the bright orange colony the Janolus is crawling on appears to be a bryozoan colony, and so I assume it is most probably a bryozoan that this Janolus feeds on.
Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Jan 12). Comment on Janolus cristatus from Portugal by David Abecasis. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15531

Factsheet

Janolus cristatus

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