Common limpet (Patella vulgata)

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Common limpet fact file

Common limpet description

KingdomAnimalia
PhylumMollusca
ClassGastropoda
OrderArchaeogastropoda
FamilyPatellidae
GenusPatella (1)

The common limpet is a well-known seashore species (2). It has a conical shell, the outer surface of which is greyish-white. Shells situated higher up on the shore tend to have taller shells than those on the lower shore (3). The underside of the muscular 'foot' on which the limpet moves around is yellow, orange or brown and often has a green or greyish tint (3).

Size
Shell length: up to 60 mm (2)
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Common limpet biology

Although they may seem to be fixed to the rock, common limpets actually move around to graze on algae during moist conditions or when they are submerged by the tide. They return to the same spot by following the mucus trail that they deposit. This spot becomes worn by the edges of the shell, and eventually an obvious 'scar' in the rock is created. This helps the limpet to attach even more tenaciously to the rock, a strategy that protects it from desiccation (2).

Common limpets begin their life as males, becoming sexually mature at around 9 months of age. Most individuals undergo a sex change, typically becoming female at 2 or 3 years of age, although some remain as males (3). Spawning takes place once a year, usually from October to December, although the timing varies around the British Isles (2). Fertilisation occurs externally; the larvae spend their first few days of life in the water column, after which time they settle on the shore (2). Life-span varies, but is between 10 and 20 years (3).

In many areas, limpets have been collected as a food source for many centuries (3).

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Common limpet range

Found on all coasts of Britain and Ireland. Its distribution extends from the Arctic Circle in the north to Portugal in the south (3).

You can view distribution information for this species at the National Biodiversity Network Gateway.
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Common limpet habitat

Attaches to firm substrates including rocks and stones from the high shore down to the edge of the sublittoral zone, a marine zone which reaches depths of around 200m (3).

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Common limpet status

Common and widespread.

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Common limpet threats

Not currently threatened.

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Common limpet conservation

Conservation action has not been targeted at this species.

There may be further information about this species available via the National Biodiversity Network Gateway.
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Find out more

For more on this species see the Marine Life Information Network (MarLIN) species account, available from:
http://www.marlin.ac.uk/species/Patellavulgata.htm

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Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact: arkive@wildscreen.org.uk
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Glossary

Larvae
Stage in an animal's lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
Sublittoral
A marine zone between the littoral zone (the shallow zone where light reaches the bed, subject to submersion and exposure by tides) and depths of around 200m.
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References

  1. National Biodiversity Network Species Dictionary (January 2003): http://www.nhm.ac.uk/nbn/
  2. Fish, J. D. & Fish, S. (1996) A student's guide to the seashore. Second Edition. Cambridge University Press, Cambridge.
  3. Hill, J.M., 2000. Patella vulgata. Common limpet. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 06/08/02]. http://www.marlin.ac.uk/species/Patellavulgata.htm
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Image credit

Common limpets underwater  
Common limpets underwater

© Simon Colmer / naturepl.com

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