Seagrass sea fir (Laomedea angulata)
|Researched by||Emily Wilson||Refereed by||Admin|
|Other common names||-||Synonyms||-|
Recorded distribution in Britain and IrelandRecorded mainly from southern England and a few locations in Ireland.
Global distributionRecorded from the northern shores of the Mediterranean north to England and the Netherlands (Cornelius, 1995b).
HabitatRecorded only on eel grasses to about 8 m depth.
- Colonial, forming short shoots arising from straight stolon.
- Internodes almost straight.
- Hydrothecae on long, ringed pedicel.
- Gonothecae on stolon; long-ovoid; aperture terminal, narrow.
Additional informationApparently confined to the seagrass Zostera marina in southern England where it can withstand salinity at least as low as 17.7 psu (Cornelius, 1995b). Cornelius (1995b) notes that there have been few British records since the decimation of British eel-grass during the 1930's. The records from Belfast Lough and the Isle of Man are from the 19th century. Most records on the distribution map are from MNCR and BioMar surveys (JNCC, 1999). However, records from the Menai Strait and from Clovelly have not been included and are considered dubious. A record from Skomer (Crothers, 1966) is considered dubious by Cornelius (1995b).
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Bruce, J.R., Colman, J.S. & Jones, N.S., 1963. Marine fauna of the Isle of Man. Liverpool: Liverpool University Press.
Cornelius, P.F.S., 1995b. North-west European thecate hydroids and their medusae. Part 2. Sertulariidae to Campanulariidae. Shrewsbury: Field Studies Council. [Synopses of the British Fauna no. 50]
Crothers, J.H. (ed.), 1966. Dale Fort Marine Fauna. London: Field Studies Council.
Hayward, P.J. & Ryland, J.S. (ed.) 1995b. Handbook of the marine fauna of North-West Europe. Oxford: Oxford University Press.
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
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Last Updated: 17/09/2002