MarLIN

information on the biology of species and the ecology of habitats found around the coasts and seas of the British Isles

A sea slug (Flabellina lineata)

Distribution data supplied by the Ocean Biogeographic Information System (OBIS). To interrogate UK data visit the NBN Atlas.

Summary

Description

Corphella lineata is a slender species up to 5 cm in length. Its transluscent body is white with opaque patches and bears 5-8 clusters of approximately 5 elongate cerata along either side of the mantle. The digestive glands in the cerata are reddish-brown or occasionally green and have white opaque tips. The oral tentacles and rhinophores are distinctly long and tapering.This species has numerous characteristic, longitudinal white lines on the body, oral tentacles and rhinophores. The front part of the foot (propodium) is notched and transversely grooved with moderately long tentacles.

Recorded distribution in Britain and Ireland

Common on most of Britain and Ireland, apart from the east coast of England.

Global distribution

-

Habitat

Coryphella lineata is a sublittorial species commonly found on its prefered hydroid prey Tubularia indivisa, at 20-40 m depth but reported to 400 m.

Depth range

-

Identifying features

  • Slender species up to 5 cm in length.
  • Long oral tentacles and rhinophores.
  • Characteristic longitudinal white stripes on:
    • Each side of the body which join at the the rear of the foot (metapodium).
    • A midline on the upper surface which divides and continues on to the oral tentacles.
    • Both of the rhinophores.
    • The sides of each ceras which also bear an opaque white tip.
  • Translucent white body with opaque patches.
  • 5-8 clusters of ca. 5 cerata on the upper surface.
  • Cerata are white tipped and reddish-brown or occasionally green.

Additional information

Coryphella lineata lays its eggs in a spiralling ribbon-like white or pink mass. The eggs hatch into planktonic larvae. Egg ribbons are usually laid on their prey, principally the hydroid Tubularia indivisa. This species may also feed on Corymorpha nutans, Hydrallmania falcata, Coryne spp., or Sertularia spp. The occasional green colouration of the digestive gland in the cerata may be due to starvation (Thompson, 1988).

This species is very similar to other Coryphella species epecially as it can be found with Coryphella browni in large numbers. However, it is distinguished from other species by the distinct white lines.

Listed by

- none -

Further information sources

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Bibliography

  1. Allen, J.A. 1962. The fauna of the Clyde Sea area. Mollusca. Millport: Scottish Marine Biological Association.

  2. Bruce, J.R., Colman, J.S. & Jones, N.S., 1963. Marine fauna of the Isle of Man. Liverpool: Liverpool University Press.

  3. Costello, M.J., Bouchet, P., Boxshall, G., Emblow, C. & Vanden Berghe, E., 2004. European Register of Marine Species [On-line]. http://www.marbef.org/data/erms.php,

  4. Foster-Smith, J. (ed.), 2000. The marine fauna and flora of the Cullercoats District. Marine species records for the North East Coast of England. Sunderland: Penshaw Press, for the Dove Marine Laboratory, University of Newcastle upon Tyne.

  5. Gibson, R., Hextall, B. & Rogers, A., 2001. Photographic guide to the sea and seashore life of Britain and north-west Europe. Oxford: Oxford University Press.

  6. Hayward, P., Nelson-Smith, T. & Shields, C. 1996. Collins pocket guide. Sea shore of Britain and northern Europe. London: HarperCollins.

  7. Hayward, P.J. & Ryland, J.S. (ed.) 1995b. Handbook of the marine fauna of North-West Europe. Oxford: Oxford University Press.

  8. Howson, C.M. & Picton, B.E., 1997. The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]

  9. Moen, F.E. & Svensen, E., 2004. Marine Fish & Invertebrates of Northern Europe. Southend-on-Sea: Aqua Press.

  10. National Biodiversity Network (NBN) Atlas website. Available from: http://www.nbnatlas.org.  Accessed 01 April 2017

  11. Picton, B. E. & Morrow, C.C., 1994. A Field Guide to the Nudibranchs of the British Isles. London: Immel Publishing Ltd.

  12. Picton, B.E. & Costello, M.J., 1998. BioMar biotope viewer: a guide to marine habitats, fauna and flora of Britain and Ireland. [CD-ROM] Environmental Sciences Unit, Trinity College, Dublin., http://www.itsligo.ie/biomar/

  13. Seaward, D.R., 1990. Distribution of marine molluscs of north west Europe. Peterborough: Nature Conservancy Council.

  14. Thompson, T. E. & Brown, G. H., 1976. British Opisthobranch Molluscs. London: Academic Press. [Synopses of the British Fauna, no. 8.]

  15. Thompson, T.E., 1988. Molluscs: Benthic Opisthobranchs. London: Bath Press. [Synopses of the British Fauna New Series), (ed. Doris M. Kermack & R.S.K. Barnes), no. 8 (second Edition)].

Citation

This review can be cited as:

Rowley, S.J. 2007. Flabellina lineata A sea slug. In Tyler-Walters H. and Hiscock K. (eds) Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. Available from: http://www.marlin.ac.uk/species/detail/2195

Last Updated: 15/02/2007