An erect bryozoan (Crisularia purpurotincta)
Distribution data supplied by the Ocean Biodiversity Information System (OBIS). To interrogate UK data visit the NBN Atlas.Map Help
Researched by | Anna Neish | Refereed by | Admin |
Authority | (Norman, 1868) | ||
Other common names | - | Synonyms | Bugula purpurotincta Norman, 1868 |
Summary
Description
Recorded distribution in Britain and Ireland
A nationally scarce species recorded off Shetland, the Isle of Lewis in the Outer Hebrides and in the Firth of Lorn, West Scotland. It has also been recorded off Northumberland, North Yorkshire and Northern Ireland.Global distribution
Found northwards from the British Isles through Norway to Spitzbergen.Habitat
Crisularia purpurotincta can be found attached to shells and hydroids at low water spring tides and shallow waters down to a maximum recorded depth of 274 m.Depth range
-Identifying features
- Colony erect, branched and densely tufted.
- Colony 8 cm in height.
- Branches dividing dichotomously.
- Purplish-red in colour when dried.
- Zooids are about 0.56 x 0.17 mm.
- Avicularia have a hooked beak.
- Avicularia are attached halfway down the outer margin of the autozooid.
- Ooecia are hemispherical.
Additional information
Identification to species level may require microscopic examination. For a detailed key see Hayward & Ryland (1998).Listed by
- none -
Bibliography
Hayward, P.J. & Ryland, J.S. (ed.), 1995. The marine fauna of the British Isles and north-west Europe. Volume 2. Molluscs to Chordates. Oxford Science Publications. Oxford: Clarendon Press.
Hayward, P.J. & Ryland, J.S. 1998. Cheilostomatous Bryozoa. Part 1. Aeteoidea - Cribrilinoidea. Shrewsbury: Field Studies Council. [Synopses of the British Fauna, no. 10. (2nd edition)]
Howson, C.M. & Picton, B.E., 1997. The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]
JNCC (Joint Nature Conservation Committee), 1999. Marine Environment Resource Mapping And Information Database (MERMAID): Marine Nature Conservation Review Survey Database. [on-line] http://www.jncc.gov.uk/mermaid
Picton, B.E. & Costello, M.J., 1998. BioMar biotope viewer: a guide to marine habitats, fauna and flora of Britain and Ireland. [CD-ROM] Environmental Sciences Unit, Trinity College, Dublin.
Datasets
NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.
OBIS (Ocean Biodiversity Information System), 2024. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2024-10-08
Citation
This review can be cited as:
Last Updated: 28/01/2003