February 23, 2004
From: Marina Poddubetskaia
When we snorkelled with Anne DuPont in Exuma, we've found many sacoglossan including this Elysia subornata. Please, could you confirm this ID ?
It's strange, but I found this guy on a 'brush alga' (sorry, I don't know its scientific name) which is the main food of Elysia papillosa in this area (if my ID is right). In fact, I took a look at many of this algae and most of the time I saw Elysia papillosa on it. So, it was a surprise to see this specimen here too. Maybe, it's just a coincidence ?
Date: February 05, 2004
Location: Great Exuma, Bahamas, Western Atlantic
Site: Stocking Island, Hole n°0
Photos: Marina Poddubetskaia - Nembro website
email@example.comPoddubetskaia, M. , 2004 (Feb 23) Elysia subornata from Southern Bahamas. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12267
Your 'brush algae' is a species of Penicillus,most probably Penicillus dumetosus. Hopefully an expert on Caribbean algae can help with a species identification. I think I will build up a few pages on common sacoglossan food algae as a guide to those looking for these animals.
Checking the literature, Elysia papillosa is the only species considered to prefer Penicillus as food (Clark, 1987), while E. subornatus is reported to feed on a number of species of Caulerpa, [C. racemosa, C. verticillata, C. paspaloides] (Clark, 1987, Redfern, 2001). So it's possible your animal just took a wrong turn and ended on the Penicillus.
Concerning your identification of this animal. I am sure you are right, although we can wait for confirmation from those with local knowledge. This species is said to be quite variable in colour, the yellow form, which predoinates on the Forum at present, is considered a juvenile stage.
• Clark, K.B., DeFreese, D. (1987) Population ecology of Caribbean ascoglossa (Mollusca: Opisthobranchia): a study of specialized algal herbivores. American Malacological Bulletin, 5(2): 259-280.
• Redfern. C., 2001. Bahamian Seashells: a Thousand Species from Abaco, Bahamas.
Re: Elysia subornata and egg masses
From: Kathe R. Jensen, June 14, 2003
Elysia subornata and egg masses
From: Christian Glardon, June 13, 2003
Re: Elysia subornata from Florida
From: Kathe R. Jensen, May 24, 2003
Elysia subornata from Florida
From: Linda Ianniello, May 23, 2003
Distribution of Elysia subornata
From: Thierry Thibaut, February 9, 2003
Elysia papillosa from Belize
From: David Behrens, October 21, 2002
Elysia subornata from Belize
From: Dave Behrens, October 21, 2002