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dc.contributor.authorde Greef, K.
dc.contributor.authorGriffiths, C.L.
dc.contributor.authorZeeman, Z.
dc.date.accessioned2014-06-11T08:05:14Z
dc.date.available2014-06-11T08:05:14Z
dc.date.issued2013
dc.identifier.citationde Greef, K., Griffiths, C.L. and Zeeman, Z. (2013). Deja vu? A second mytilid mussel, Semimytilus algosus, invades South Africa's west coast. African Journal of Marine Science 35, 307-313.en
dc.identifier.issn1814-232Xen
dc.identifier.urihttp://hdl.handle.net/123456789/1481
dc.description.abstractA second marine mussel is shown to have invaded South Africa’s west coast. Molecular techniques, based on intraspecific gene sequence divergences, prove its identity as Semimytilus algosus, a member of the family Mytilidae, native to Chile. The identity of an older introduced population found in Namibia is also confirmed. The present geographic range of S. algosus in South Africa extends some 500 km, from Groenriviersmond in the north to Bloubergstrand in the south. Together with Mytilus galloprovincialis, another previously established invasive mussel, S. algosus has become a dominant intertidal organism on wave-exposed rocky shores across this region. Both species are now much more abundant intertidally than either of the indigenous mussels Aulacomya ater and Choromytilus meridionalis, which have become largely confined to sublittoral and sand-inundated habitats respectively. The two invasive mussels display strong spatial segregation, with M. galloprovincialis dominating the midshore and S. algosus blanketing the lower shore. Through a combination of its small size and high abundance, S. algosus is likely to greatly increase food availability for a range of intertidal predators, many of which cannot consume mussels above a threshold size.en
dc.format.extent3246918 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherNISC (Pty) Ltd and Taylor & Francisen
dc.subjectbio-invasionen
dc.subjectmtDNA COIen
dc.subjectpredationen
dc.subjectrocky shoreen
dc.titleDeja vu? A second mytilid mussel, Semimytilus algosus, invades South Africa's west coasten
dc.typeJournalArticlesen
dc.cibjournalAfrican Journal of Marine Scienceen
dc.cibprojectNAen


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