Doto varaderoensis
Ortea, 2001
Order: NUDIBRANCHIA
Suborder: DENDRONOTINA
Family: Dotidae
DISTRIBUTION
Caribbean [Cuba, Puerto Rica, Florida].
PHOTO
Locality: Lake Worth Lagoon, 20 feet, Florida, USA, Atlantic, Tidal, intracoastal. Length: 0.75 inch. Photographer: Linda Ianniello.
The body is transparent or translucent with savttered white spots and patches. The internal viscera gives the body a pinkish-orange colouration. The cerata are similarly coloured with a pinkish orange core and whitish patches all over the ceratal wall. The inflated rounded ceratal tubercles are translucent, without pigmented spots or patches. The rhinophores and rhinophore sheaths are pinkish orange with small white spots all over. The edge of the sheath has an anterior triangular extension and what appears to be a V-shaped notch posteriorly. Has been reported to approx 15 mm in length.
Ortea reports this to feed on the hydroid Thyroscyphus.
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Ortea, J. (2001). The genus Doto Oken, 1815 (Mollusca: Nudibranchia) in the Caribbean sea: Natural History and new species description (in Spanish). Avicennia Supplement 3: 1-46.
Rudman, W.B., 2009 (June 3) Doto varaderoensis Ortea, 2001. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/dotovara
Related messages
Doto varaderoensis from Florida
June 3, 2009
From: Linda Ianniello
Dr. Bill,
I just sent you three images of what I believe are Doto uva [#22477]. Here are two images of another Doto from the same area, that I think is Doto varaderoensis which you don't have listed on the forum. Hope these images help.
Locality: Lake Worth Lagoon, 20 feet, Florida, USA, Atlantic, Tidal, intracoastal. Length: 0.75 inch. Photographer: Linda Ianniello.
Regards,
Linda
lindai1@bellsouth.net
Dear Linda,
This is a good example of the value of 'biological' information. As I discussed in your other message [#22477] I am having a lot of difficulty identifying the Caribbean species of Doto. Your animals look quite like the photo identified as D. varaderoensis in Caribbean Sea Slugs, but I was less confident when I checked Ortea's review because there were a number of species which seemed to partially fit. Luckily, Ortea reports it feeding on a species of hydroid in the genus Thyroscyphus, and includes a photo showing the animal on a branch of the hydroid where there are two large brown inflated cup-like thecae - the large case which protects each polyp in these hydroids.
I had already included some close-ups of the hydroid your animal was on, because I thought the large cup-shaped theca might be useful. I didn't realise I would be using it myself to confirm your species is D. varaderoensis. I am not a hydroid expert, but hydroids with such large theca are not that common, so adding the similarity of the hydroid to what we know of the shape and colour of the Doto, I am more confident than I usually am with this genus, to identify it as D. varaderoensis.
Best wishes,
Bill Rudman
