|Researched by||Judith Oakley||Refereed by||Admin|
|Authority||(Suringar) Hariot, 1889|
|Other common names||-||Synonyms||Codium fragile tomentosoides (Suringar) Hariot, 1889, Codium fragile subsp. tomentosoides , Codium fragile capense (Suringar) Hariot, 1889|
There is extreme difficulty in distinguishing subspecies from each other. When viewed in section under a microscope, the utricles are shorter and stouter in the tomentosoides subspecies than in the Codium fragile subspecies atlanticum. Work by Provan et al. (2005) identified the species initially by the presence of numerous pointed spines on the surface of the alga, and by subsequent DNA sequencing.This non-native species is known to occur in a number of marine Special Areas of Conservation (mSACs), in the UK e.g. Pembrokeshire. The impacts or rate of dispersal are not known due to earlier morphological confusion with native species.
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Eno, N.C., Clark, R.A. & Sanderson, W.G. (ed.) 1997. Non-native marine species in British waters: a review and directory. Peterborough: Joint Nature Conservation Committee.
Gibson, R., Hextall, B. & Rogers, A., 2001. Photographic guide to the sea and seashore life of Britain and north-west Europe. Oxford: Oxford University Press.
Guiry, M.D. & Nic Dhonncha, E., 2002. AlgaeBase. World Wide Web electronic publication http://www.algaebase.org,
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
Maggs, C.A., 2005b. Green sea fingers Codium fragile subsp. tomentosoides. Marine Aliens project. [On-line] http://www.marlin.ac.uk/marine_aliens/marine_aliens.htm,
Provan, J., Murphy, S. & Maggs, C.A., 2005. Tracking the invasive history of the green alga Codium fragile ssp. tomentosoides. Molecular Ecology, 14, 189-194.
Silva, P.C., 1955. The dichotomous species of Codium in Britain. Journal of the Marine Biological Association of the United Kingdom, 34, 565-577.
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Last Updated: 13/08/2007