MarLIN

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

Marbled crenella (Musculus subpictus)

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

Summary

Description

Modiolarca tumida is a small bivalve up to 2 cm in length. The valves of the shell are equal in size, shape and depth and both have a swollen, plump appearance. The shell is broadly oval in outline. The shell is yellow with ribs in the anterior and posterior regions. The periostracum is light green, with blotches of brown, red-brown or purple. The margin of the shell is smooth but crenulate where it meets the ribs. The inside of the shell is bright white.

Recorded distribution in Britain and Ireland

Recorded from the Shetland Isles, Orkney, south east Scotland, the Northumberland coast, and the south west and west coasts of England and Scotland, with a few records from Ireland.

Global distribution

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Habitat

On rocky shores in the low intertidal, buried in the test of Ascidia mentula or Ascidiella aspersa, in and amongst kelp holdfasts, under rocks and stones.

Depth range

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Identifying features

  • Shell yellow with a light green periostracum.
  • Anterior end of shell with 15-18 radiating ribs, posterior end with 20-35 ribs.

Additional information

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Listed by

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Further information sources

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Bibliography

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

  2. Crothers, J.H. (ed.), 1966. Dale Fort Marine Fauna. London: Field Studies Council.

  3. 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.

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

  5. 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.]

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

  7. 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/

  8. Tebble, N., 1966. British Bivalve Seashells. A Handbook for Identification, 2nd ed. Edinburgh: British Museum (Natural History), Her Majesty's Stationary Office.

Citation

This review can be cited as:

Neal, K.J. 2004. Musculus subpictus Marbled crenella. 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/2064

Last Updated: 24/09/2004