May 16, 2002
From: Baki Yokes
Here are some photos of a species that we encountered recently. The blue spots indicate Oxynoe viridis, is it correct? If so, I think this is an other new record for the Mediterranean. We found 2 specimens on a Caulerpa racemosa field. It seemed that one of them was eating an alga other than Caulerpa. Do these animals have a broad range of food or was it only by chance, because the specimen did not leave the alga for a long time until we took it, and it was mowing back-and-forth on the alga as if it was trying to eat it. We observed that, beside C. racemosa, this species also likes C. prolifera and they do not specially prefer one of them when both are present. This species should also be tested to for its potential in controlling the Caulerpa invasion in the Mediterranean.
Upper Right: 29 April 2002, Antalya, Turkey
Divesite: Kucuk Ada, Uc Adalar. Depth: 6m, Size: 3cm. On Caulerpa racemosa.
Lower Left: As above - On an alga other than C. racemosa
Lower Right: 29 April 2002 - Aquarium photo on Caulerpa prolifera.
Yokes, B., 2002 (May 16) Oxynoe viridis? from Turkey. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6935
Although it is unusual to find an animal in the western Pacific so gaudily spotted with blue, specimens I used to find in Dar es Salaam, Tanzania were often this yellowish colour with prominent blue spots. So yes I agree with ypou that this is another lessepsian migrant from the Red Sea.
Concerning its diet, Oxynoe viridis seems to prefer Caulerpa racemosa in the field, but that may be because it is often the dominant species of Caulerpa in many of the localities Oxynoe is found. Obviously it will eat other species of Caulerpa and in Sydney, it is usually found on Caulerpa filiformis which is an introduced species, probably from South Africa. In southern Australia, O. viridis is usually found on Caulerpa cactoides. So it is possible the unknown algae in your lower right photo is being eaten by Oxynoe. Perhaps someone will recognise it for us.
This is another very interesting find.
Re: A juvenile Oxynoe viridis ? from nthn Mariana Islands
From: Takao Urasawa, July 28, 2008
Sea slug species from Turkey
From: Tom Turk, November 26, 2007
Re: Oxynoe viridis from East Timor
From: Brian Francisco, September 11, 2006
Oxynoe viridis from East Timor
From: Brian Francisco, September 9, 2006
Oxynoe from the Red Sea
From: Dr. Jacob Dafni, February 23, 2005
Egg mass of Oxynoe viridis
From: Nishina Masayoshi, July 6, 2002
Retractile papillae in Oxynoe
From: Nishina Masayoshi, May 10, 2002
Oxynoe? from Japan
From: Nishina Masayoshi, April 30, 2002
Oxynoe viridis from Hachijo Island, Japan
From: Nishina Masayoshi, August 17, 2001
Oxynoe viridis f rom South Australia
From: Nigel Holmes, August 17, 2001
Oxynoe viridis from Heron Island
From: Julie Marshall, August 6, 2000
Is this a Juliidae?
From: Grey McNeil, July 21, 1999
Oxynoe viridis & Lobiger viridis the same?
From: Karen Gowlett-Holmes, July 13, 1999