MOLLUSCA : NUDIBRANCHIA : TritoniidaeSNAILS, SLUGS, ETC.

Tritonia lineata (Alder & Hancock, 1848)


Description: The body of T. lineata is translucent white, but sometimes a pinkish hue is present. There are two white lines that run from the base of the rhinophores, down the back and unite at the base of the tail. The head bears 4 oral processes that are tipped with white pigment. There may be up to 6 pairs of arborescent gills on the back of the animal. Adults may reach 34mm in length.

Habitat: The diet of this nudibranch is unknown, however it is speculated that it feeds on small octocorals such as Sarcodictyon roseum. It is usually found in silty conditions on rocky surfaces. The spawn consists of a coiled thin ribbon of eggs.

Distribution: T. lineata has a wide distribution around the British Isles and from Norway to Brittany, but is rather localised in its occurrence. It is not uncommon around Skomer Island and Lundy, but rather scarce in Irish localities.

Key Identification Features:

Distribution Map from BioMar data for Ireland - Google Earth map:  download this placemark (not got Google Earth installed?)

Distribution Map from NBN: Grid map (fast) : Interactive map (slow, requires login to view records) : National Biodiversity Network mapping facility, data for UK.


 Picton, B.E. & Morrow, C.C., 2010. [In] Encyclopedia of Marine Life of Britain and Ireland
http://www.habitas.org.uk/marinelife/species.asp?item=W12430

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