Date: Cerbere, France (Mediterranean coast), July 02, 2002, 15-20mm long. Photo: Marina Poddubetskaia
Body translucent white usually with a noticeable tinge of brown, (which is absent in the accompanying photo), with a pattern of thin opaque white longitudinally or diagonally arranged lines. Oral tentacles and tentacular foor corners, orange-yellow, and tips of dorso-lateral processes, rhinophores, gills, and 'tail' are similarly coloured. Reported to feed on Entoprocts (Cattaneo-Vietti et al., 1990. Atlas of Mediterranean Nudibranchs).
• Haefelfinger, H-R. (1960) Neue und wenig bekannte Opisthobranchier der Gattungen Trapania und Caloria aus der Bucht von Villefranche-sur-mer (A.-M.). Revue Suisse de Zoologie, 67(2): 226-238.
Rudman, W.B., 2002 (August 4) Trapania lineata Haefelfinger, 1960. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/trapline
June 14, 2007
From: Dominique Horst
Concerning message #17030:
When I saw three Trapania lineata, I was surprised about their black colour. Usually they are transparent or light yellow... After looking at the picture, I've realized it's because they were eating the small black animals and this reminded me of your reply to my previous message about Trapania lineata [#17030 ].
I guess you will confirm, that these Trapania were feasting and stuffing themselves with Entoprocts.
Locality: Lerins Island, 25m, France, Mediterranean sea, 17 May 2007. Length: 3 mm. Photographer: Dominique HORST
firstname.lastname@example.orgHorst, D., 2007 (Jun 14) Feeding record - Trapania lineata from Antibes, France. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20000
Thanks for this nice observation of its feeding behaviour and of how they can change colour. When you are transparent like this, its a bit hard to hide what you have been eating.
By coincidence, Lucas Cervera has kindly sent me a copy of a paper of work that Luis Sanchez Tocino and he have published on the diet of Trapania maculata and T. hispalensis. They report that both species feed on a kamptozoan [= entoproct] of the genus Loxosomella, which is a nice addition to David Abecasis's photos of T. hispalensis [#14717] apparently feeding on kamptozoans.
Tocino, L.S. & Cervera, J.L. (2006) Preliminary data on the diet of Trapania maculata Haefelfinger, 1960 and Trapania hispalensis Cervera and Garcia-Gomez, 1989 (Mollusca: Nudibranchia). Zool. baetica, 17: 85-89.
August 10, 2006
From: Dominique Horst
Another slug on my way today. It should be Trapania lineata. It was feeding the sponge Reniera fulva may be? Would you have any information about their food ? Could it be this sponge ?
Locality: Cap d'Antibes, 13m, France, Mediterranean sea, 29 June 2006, vertical rock. Length: 3mm. Photographer: Dominique Horst.
It is so small that I've found it by chance. If this sponge is possibly their food, then I will watch them with more attention.
Many thanks in advance,
email@example.comHorst, D., 2006 (Aug 10) Trapania lineata from Antibes, France. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17030
Thanks for the photos. We thought for a long time that species of Trapania fed on the sponges they were so often associated with, but thanks to a lot of input from Forum participants, we now know better.
They feed on small stalked animals called Entoprocts [or Kamptozoa] which seem to live in association with some sponges. See good photos of this can be seen in Bernard Picton's earlier message [#3767].
October 5, 2003
From: Anne DuPont
While I was attending the "Sea Slug Training Course" in Cerbere, France, in July, I photographed this pair of Trapania lineata mating. They were about one-half inch long, and I photographed them in about 30 feet of water. I thought you would be interested in seeing this.
Delray Beach, Fl., USA
DuPont, A., 2003 (Oct 5) Mating Trapania lineata. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11127
I'm always interested in photos of these animals 'doing things' - feeding, breeding etc etc
October 11, 2002
From: Baki Yokes
Here is a photo of Trapania lineata from Turkey, pictured by Adnan Buyuk. This species is rarely observed around Turkish coasts.
Photo: Adnan Buyuk firstname.lastname@example.org
Date:15 July 2002
Place: Antalya, Turkey
Divesite: Uc Adalar
Size: around 1,5cm
Yokes, B., 2002 (Oct 11) Trapania lineata from Turkey. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8149
Thanks for this record. As is usual for species of Trapania I see this animal was photographed on a sponge - no doubt because the entoprocts it feeds on are often found in association with sponges
August 5, 2002
From: Marina Poddubetskaia
email@example.comPoddubetskaia, M., 2002 (Aug 5) Trapania lineata from French Mediterranean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7592
Nice to be able to add one of the few Trapania species missing from the Forum.