Tambja blacki
Pola, Cervera & Gosliner, 2006
Order: NUDIBRANCHIA
Suborder: DORIDINA
Superfamily: ANADORIDOIDEA
Family: Polyceridae
Subfamily: Nembrothinae
DISTRIBUTION
Known at present from the Great Barrier Reef, Australia and Papua New Guinea.
PHOTO
Upper photo: Heron Island - No details available. Lower photos: Heron Is,Qld 25 May 1981 13m AM C128160 Photos: Bill Rudman
This species has a yellow-green or green background colouration with a symmetrical pattern of black patches. There are also a series of brownish longitudinal bands, edged in yellow or orange. On the dorsum, there is a median brown band running from between the rhinophores to the gills, and another around the edge of the mantle. There is a similar band running along each side of the body and another running along the edge of the foot.
The brown bands running along each side of the dorsum join in the posterior midline, behind the gills, on a raised rounded crest. The oral tentacles are large and flattened dorso-ventrally, and there are three large branched tripinnate gills. The reproductive system of this species is quite unusual with some features more typical of species of Nembrotha than of Tambja (i.e. vaginal gland absent, prostate spread over the bursa copulatrix and wide and elongate vagina). The animal grows to at least 130 mm in length.
Tambja blacki differs from the other species of Tambja in its large size, coloration and prominent crest behind the gill. A recently described
species from Brazil, Tambja stegosauriformis, also has prominent crests behind the gill, but its shape, colour, and geographical distribution are very different. T. blacki is reported to feed on the bryozoan Amastina rudi (Willan & Coleman, 1984; Marshall & Willan, 1999). It swims readily by strong side-to-side flexions when irritated (Willan & Coleman, 1984; Marshall & Willan, 1999).
- Marshall, J. G. and Willan, R. C. (1999) Nudibranchs of Heron Island, Great Barrier Reef. A survey of the Opisthobranchia (Sea Slugs) of Heron and Wistari Reefs. Leiden, Backhuys Publishers. 1-257.
- Pola, M., Cervera, J. L., and Gosliner, T. M. (2006) Description of two new phanerobranch nembrothid species (Nudibranchia: Polyceridae: Doridacea). Journal of the marine biological Association, U.K. 86: 403-409.
- Willan, R.C. & Coleman, N. (1984): Nudibranchs of Australasia. Australasian Marine Photographic Index, Sydney.
Rudman, W.B., 2006 (July 15) Tambja blacki Pola, Cervera & Gosliner, 2006. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/tambblac
Related messages
Two new species of Tambja
July 17, 2006
From: Bill Rudman
I have slowed down on answering identification messages so I have a chance of catching up on a backlog of new species - or fairly new species - and new fact sheets.
Here are a couple of new species of Tambja:
Tambja haidari
Tambja blacki
They are not the last of the Tambja species I have to prepare, but it makes me feel a little less guilty to get some posted. These are part of Marta Pola's continuing investigation of this group.
- Pola, M., Cervera, J. L., and Gosliner, T. M. (2006) Description of two new phanerobranch nembrothid species (Nudibranchia: Polyceridae: Doridacea). Journal of the marine biological Association, U.K. 86: 403-409.
Best wishes
Bill Rudman
