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 (Palio nothus)

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

Summary

Description

Palio nothus grows up to 2 cm in length and is blackish-green in colour with pale patches. It has cone-like (conical) projections on its back and also short club shaped pimple-like projections (papillae) on either side of the gills. The eggs spawn to forms a coiled ribbon which is white or pale pink in colour. Sensory organs (rhinophores) have long shafts and few lamellae (gill like structures).

Recorded distribution in Britain and Ireland

Common throughout the British Isles.

Global distribution

Recorded all around the British Isles and north to the Arctic circle and to America.

Habitat

Palio nothus occurs under rocks on the low shore and in the shallow subtidal.

Depth range

-

Identifying features

  • Grows up to 2 cm in length.
  • Blackish-green colour with pale patches.
  • Transparent cone shaped projections on its body.

Additional information

Palio dubia has been confused with this species in the past, however Palio nothus has a more oval shape head, and club-like dorsal projections, where Palio dubia has rounded processes on its body.

Listed by

- none -

Further information sources

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Bibliography

  1. Hayward, P.J. & Ryland, J.S. (ed.) 1995a. The marine fauna of the British Isles and north-west Europe. Volume 2. Molluscs to Chordates. Oxford Science Publications. Oxford: Clarendon Press.

  2. 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.]

  3. JNCC (Joint Nature Conservation Committee), 1999. Marine Environment Resource Mapping And Information Database (MERMAID): Marine Nature Conservation Review Survey Database. [on-line] http://www.jncc.gov.uk/mermaid

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

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

  6. Picton, B.E., 2000. Nudibranchs of the British Isles. http://www.pictonb.freeserve.co.uk/nudibranchs/index.html, 2003-09-11

Citation

This review can be cited as:

Edwards, R.V. 2008. Palio nothus 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/1980

Last Updated: 24/04/2008