Unexpected genetic structure of mussel populations in South Africa: indigenous Perna perna and invasive Mytilus galloprovincialis

Zardi, Gerardo I; McQuaid, Christopher D; Teske, Peter R; Barker, Nigel P

Title: Unexpected genetic structure of mussel populations in South Africa: indigenous Perna perna and invasive Mytilus galloprovincialis
Creator: Zardi, Gerardo I, McQuaid, Christopher D, Teske, Peter R, Barker, Nigel P
Subject: To be catalogued
Date: 2007
Type: text
Type: article
Identifier: http://hdl.handle.net/10962/445564
Identifier: vital:74401
Identifier: doi:10.3354/meps337135
Description: Genetic structure of sedentary marine organisms with planktonic larvae can be influenced by oceanographic transport, larval behaviour and local selection. We analysed the population genetic structure (based on mtDNA) of the invasive mussel Mytilus galloprovincialis and the indigenous mussel Perna perna along the southern African coastline. Low genetic divergence of M. galloprovincialis confirms its recent arrival in South Africa. In contrast, the genetic structure of P. perna revealed strong divergence on the south-east coast, forming a western and an eastern lineage. The distribution of the 2 lineages is extraordinary. They overlap for ca. 200 km on the south-east coast, and the western lineage includes animals occurring on either side of a 1000 km break in distribution across the Benguela upwelling system. In cluster analyses, animals on the south coast grouped with others 1000s of km to the west, rather than with those only 200 km to the east.
Format: 10 pages, pdf
Language: English
Relation: Marine Ecology Progress Series, Zardi, G.I., McQuaid, C.D., Teske, P.R. and Barker, N.P., 2007. Unexpected genetic structure of mussel populations in South Africa: indigenous Perna perna and invasive Mytilus galloprovincialis. Marine Ecology Progress Series, 337, pp.135-144, Marine Ecology Progress Series volume 337 number 1 135 144 2007 1616-1599
Rights: Publisher
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