Crepidula fornicata L.

Common slipper shell, common Atlantic slippersnail
Crepidula_fornicata_01 Crepidula_fornicata_02

Description 1

Oval shell that is up to 50 mm long and 25 mm high with a very reduced loop. It opens with a septum which runs for half of its length. A smooth shell with irregular growth lines. It is white, cream, yellow or pink in colour and has red or brown stripes or marks. The septum is white and the rest of the internal surface is a cinnamon colour.

Biology 1

A proterandry hermaphrodite which starts off as a male and then later becomes a female. Females can produce 200,000 eggs in 2-4 laying seasons a year, depending on the temperature. Laying season runs from February to October with a peak in May to June. They feed on phytoplankton and suspended organic matter, developing large populations, unlike limpets which feed on grazing.

Habitat 1

They prefer areas that are protected from the tide, in shallow bays and inter-tidal areas, where they are exposed to quick fluctuations in temperature and salinity. The populations in Europe are mainly found in sub-tidal regions, between 0-20 m although they can reach depths of up to 60 m. In a great variety of substrates, more abundant in muddy areas of those with a mixed composition.

Sources 1

Spanish Catalogue of Exotic Invasive Species.

Spanish Catalogue of Exotic Invasive Species - Non-arthropod invertebrates 1

http://www.mapama.gob.es/es/biodiversidad/temas/conservacion-de-especies/especies-exoticas-invasoras/ce_eei_invertebrados_na.aspx

Fuentes y Créditos

  1. Adaptado por INVASORES - administrador de un trabajo de (c) cartotragsatec, algunos derechos reservados (CC BY-SA), http://natusfera.gbif.es/guide_taxa/1969

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