Choromytilus meridionalis

Choromytilus meridionalis, the black mussel, is a species of bivalve. It is a marine mollusc in the family Mytilidae.

Black mussel
Choromytilus meridionalis, urchins and strawberry anemones
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Mytilida
Family:	Mytilidae
Genus:	Choromytilus
Species:	C. meridionalis
Binomial name
Choromytilus meridionalis Krauss, 1848[1]

Distribution

This species is found only around the southern African coast, from central Namibia to Port Elizabeth, from the low intertidal to about 10m.[2]

Description

This animal grows up to 150 mm in length. It is a shiny black mussel which grows clustered in groups on rocks and in sandy areas.[3] It is narrower and blacker than the Mediterranean mussel, Mytilus galloprovincialis, with which it is often confused.

Ecology

The black mussel is a filter feeder that eats floating scraps of algae and phytoplankton. It is threatened by the invasion of the fast-growing and hardy Mediterranean mussel, which outcompetes it for space.

References

1. https://www.biolib.cz accessed 5 January 2010
2. Branch, G.M., Branch, M.L, Griffiths, C.L. and Beckley, L.E (2005): Two Oceans: a guide to the marine life of southern Africa ISBN 0-86486-672-0
3. Day, J.H. 1969. Marine Life on South African Shores Balkema, Cape Town