Mitochondrial DNA heteroplasmy in European populations of the mussel Mytilus trossulus |
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Authors: | R Wenne D O F Skibinski |
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Institution: | (1) Marine Biology Center, Polish Academy of Sciences, Sw. Wojciecha 5, 81-347 Gdynia, Poland;(2) School of Biological Sciences, University College of Swansea, Singleton Park, SA2 8PP Swansea, South Wales, UK |
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Abstract: | Mitochondrial DNA (mtDNA) of Mytilus trossulus from the Gulf of Gdansk (southern Baltic) and M. edulis from Swansea Bay, South Wales, UK, collected in 1991, was studied by restriction-enzyme analysis. These two species were more similar to each other in haplotype frequencies than either was to M. galloprovincialis from Britain. M. trossulus resembles M. edulis in having a high frequency of heteroplasmy restricted to males. However, in contrast to M. edulis where restriction-site heteroplasmy predominates, in M. trossulus heteroplasmic individuals possess two genomes which differ in length by up to 3 kilobases. |
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