Everything about Colpomenia Peregrina totally explained
Colpomenia peregrina (Sauvageau) Hamel is a
seaweed (
alga) not native to the
British Isles but recorded in
Ireland since 1934. It appears to have been introduced from the
Pacific and was first noticed in
Europe in 1906 on
oyster beds. It has now been recorded throughout the eastern north
Atlantic from
Norway and
Sweden to
Portugal. It was first recorded Britain in 1908 and in Ireland in 1934.
Classification
Colpomenia is a brown alga in the Phylum, or Division, (Heterokontophyta), the Class Phaeophyceae and the Order Sphacelariales.
Description
Colpomenia peregrina (syn.
Colpomenia sinuosa (Mertens ex Roth) Derbès et Solier var.
peregrina Sauvageau) is a small brown alga, bladder-like, hollow and membranous, up to 9 cms across. The surface is thin and smooth but often collapsed or torn when older. Olive brown in colour and attached by rhizoidal filaments to rock at the base.
There are two species in Europe:
C. sinuosa (Mert.) Derb. & Sol. and
C. peregrina (Sauvageau) Hamel.
C. sinuosa was present at least as far back as the 1840s in
Spain and
C.peregrina was introduced and first noticed by oyster fishermen in the
Bay of Biscay in 1906. It was first noticed in Britain in 1907 in
Cornwall and
Dorset.
The two species are superficially similar and in older texts, such as Knight and Parke (1931),
C.peregrina is referred to as
C.sinuosa.
Leathesia difformis (L.) Aresch. is similar, it's yellow brown in colour, fleshy and mucilaginous in texture. It is globose and smooth when young becoming hollow and convoluted with age and growing to 5 cms in diameter.
Ecology
Found in littoral rock pools, not exposed and in the sublittoral to 3m depth.
Donegal, It is now abundant.
Britain:
Generally around the British Isles.
It is noted as a recent addition to the flora (as
C. sinuosa in Knight and Parke (1931).Mediterranean.
America (west):
Alaska to La Jolla, California.
[Further Information]
Get more info on 'Colpomenia Peregrina'.
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