BIOTIC Species Information for Pomatoceros triqueter
Researched byLizzie Tyler Data supplied byUniversity of Sheffield
Refereed byThis information is not refereed.
Distribution and Habitat
Distribution in Britain & IrelandCommon and widespread on all coasts.
Global distributionOccurs from the coasts of north west Europe to the Mediterranean.
Biogeographic rangeNot researched Depth range
MigratoryNon-migratory / Resident   
Distribution Additional Information
  • Segrove (1941) studied Pomatoceros triqueter in south England and found that there are usually ten times as many males as females present.
  • The species has been noted to occur in very exposed to extremely sheltered wave action, very sheltered to exposed water flow rate, and in areas where there is little or no silt present (Price et al., 1980).
  • Pomatoceros triqueter is considered to be a primary fouling organism (Crisp, 1965), colonizing artificial commercially important structures such as buoys, ships hulls, docks and offshore oil rigs (OECD, 1967).
  • Pomatoceros triqueter is an opportunistic species, making use of available space quickly. In Bantry Bay, south-west Ireland, fouling by the tube worm caused a 65% mortality of scallops and prevented scallops from recolonizing the area after spat collection (Burnell et al., 1991). They also reported that mussel farmers considered that most inner areas of the bay would be subject to this type of fouling.
  • Rubin (1985) reported that Pomatoceros triqueter overgrew colonies of encrusting Bryozoa to become the dominant species on experimental panels. However, Bryozoa then grew on the tubes of the species, thereby avoiding exclusion.
  • Dominance of %Pomatoceros lamarckii% over Pomatoceros triqueter is dependent on climatic conditions (Castric-Fey, 1983).

  • Substratum preferencesBedrock
    Large to very large boulders
    Small boulders
    Physiographic preferencesOpen coast
    Enclosed coast / Embayment
    Biological zoneSublittoral Fringe
    Upper Infralittoral
    Lower Infralittoral
    Upper Circalittoral
    Wave exposureVery Exposed
    Moderately Exposed
    Very Sheltered
    Extremely Sheltered
    Tidal stream strength/Water flowStrong (3-6 kn)
    Moderately Strong (1-3 kn)
    Weak (<1 kn)
    Very Weak (negligible)
    SalinityFull (30-40 psu)
    Habitat Preferences Additional Information
    Distribution References Hayward & Ryland, 1995b, Hayward et al., 1996, Fish & Fish, 1996, Castric-Fey, 1983, Segrove, 1941, Bacescu, 1972, Price et al., 1980, Crisp, 1965, OECD, 1967, Burnell et al., 1991, Rubin, 1985, Hayward & Ryland, 1995b,
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