Aldisa smaragdina from southern Portugal
June 26, 2006
From: Carlos Afonso
Dear Bill,
Here are some photos of Aldisa smaragdina collected just a few days ago between the localities of Albufiera and Armação de Pêra (Algarve, South Portugal). The specimen came from a depth of 20 meters and was found attached under rock set on platform.
Locality: Between Albufiera and Armação de Pêra , 20 meters, Algarve, Portugal, Atlantic Ocean, 20 June 2006, found attached under rock set on rock platform with sand. Photographer: Carlos Afonso (Lab. photo).
Warm regards,
Carlos Afonso
(Algarve, South Portugal)
cmlafonso@ualg.pt
Afonso, C., 2006 (Jun 26) Aldisa smaragdina from southern Portugal. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16971
Dear Carlos,
Thanks for these photos. They show how the upper half of the gills is a whitish colour, and the lower half reddish, which seems to be a character of this species. They also show the two dark patches in the dorsal midline between the gills and the rhinophores, which is a feature of many species of Aldisa. The dark patches seem to be an attempt to camouflage the nudibranch to look like a sponge, as these dark patches look quite like the large pores or oscules in sponge colonies which are part of its water circulation system.
Best wishes,
Bill Rudman
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