Echinocardium cordatum
Sea-potato
Species recognized by The Integrated Taxonomic Information System
, T Orrell (custodian) in
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Overview
Ecology
Source and Additional Information
Ecology: benthic, inshore, continental shelf, deposit feeder. General distribution: temperate, discontinuous (west Pacific Ocean, NZ, South Africa, Gulf of California, north Atlantic Ocean), depth range 0-230? m. (Rowe & Gates, 1995). Also distributed in Australia (Rowe & Gates, 1995).
References
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Clark, A.M. and J. Courtman-Stock. (1976). The echinoderms of southern Africa. Publ. No. 766. British Museum (Nat. Hist), London. 277 pp.
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=6324
Biology
Source and Additional Information
Breeding occurs in summer. The pelagic larvae are sometimes found in enormous quantities and likewise the young can be found in large amounts on the sediment surface. The growth rate of E. cordatum varies with the environment. It grows faster in shallow, sandy than in deep, muddy areas, possibly under the influence of temperature. The species can live for 10 to 20 years (Mortensen, 1927; Wolff, 1973; Fish & Fish, 1989; Rees & Dare, 1993).
Depending on the temperature, the species digs a few centimetres to about 20 cm deep into the sediment. A respiratory channel (chimney) leads from the hole to the surface and one or two sanitary drains are located horizontally behind the echinoid. The animal is isolated from the sediment by a mucus veil, which plasters the burrow. E. cordatum plays an important role in sediment bioturbation (Mortensen, 1927; De Ridder et al., 1987; Fish & Fish, 1989; Rees & Dare, 1993). E. cordatum is a non-selective deposit feeder. lt collects particles from the s
References
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Holtmann, S.E.; Groenewold, A.; Schrader, K.H.M.; Asjes, J.; Craeymeersch, J.A.; Duineveld, G.C.A.; van Bostelen, A.J.; van der Meer, J. (1996). Atlas of the zoobenthos of the Dutch continental shelf. Ministry of Transport, Public Works and Water Management: Rijswijk, The Netherlands. ISBN 90-369-4301-9. 243 pp.
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=83
"Echinocardium cordatum". Encyclopedia of Life, available from "http://www.eol.org/pages/598133". Accessed
18 Mar 2010.

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