BIOTIC Species Information for Electra pilosa
Researched byDr Harvey Tyler-Walters Data supplied byMarLIN
Refereed byDr Peter J. Hayward
Distribution and Habitat
Distribution in Britain & IrelandCommon on all coasts of the British Isles, although under recorded on parts of the east coast.
Global distributionCommon in all temperate seas.
Biogeographic rangeNot researched Depth rangeIntertidal to at least 50m
MigratoryNon-migratory / Resident   
Distribution Additional InformationElectra pilosa may be found on most substrata, and is part of the epiphytic fauna of macroalgae such as %Fucus serratus% in the intertidal and the stipes or holdfasts of laminarians in the subtidal. Electra pilosa may also be found encrusting the shells of shellfish such as mussels. It is also a common member of the fouling community (Ryland, 1967). The abundance of bryozoans is positively correlated with supply of hard substrata and hence with current strength (Eggleston, 1972b; Ryland, 1976). Similarly, the abundance of Electra pilosa increased with increasing fucoid density and surface area (O'Connor et al., 1979).

Substratum preferencesBedrock
Large to very large boulders
Small boulders
Other species (see additional information)
Artificial (e.g. metal/wood/concrete)
Under boulders
Physiographic preferencesOpen coast
Strait / sound
Ria / Voe
Enclosed coast / Embayment
Biological zoneMid Eulittoral
Lower Eulittoral
Sublittoral Fringe
Upper Infralittoral
Lower Infralittoral
Wave exposureModerately Exposed
Tidal stream strength/Water flowStrong (3-6 kn)
Moderately Strong (1-3 kn)
Weak (<1 kn)
SalinityFull (30-40 psu)
Habitat Preferences Additional Information
Distribution References Hayward & Ryland, 1995b, Hayward & Ryland, 1998, Bruce et al., 1963, Ryland, 1967, Ryland, 1976, Ryland, 1977, Moore, 1973c, Ryland, 1970, O'Connor et al., 1979, Gontar & Denisenko, 1989,
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