Abstract
The controversy surrounding the origin of antitropical distribution of Mytilus mussels and the taxonomic status of southern hemisphere populations remain unsolved, despite the efforts. One of the limiting factors remains the lack of the complete sequences of the representative mitochondrial genomes which would allow their proper comparison with the relatively well-represented northern hemisphere congeneric mussels. To fill this gap we sequenced the representative maternal (F) genome of a native Chilean mussel. The genome is 16,748bp long and structurally identical to the northern hemisphere M. edulis and M. galloprovincialis F genomes. However, the genetic distance from them (≈5%) is twice as high as the maximum distance between them (<2.5%). Thus, the notion that the name M. chilensis should be used for native Chilean Mytilus mussels, with the same rank as M. galloprovincialis and M. edulis is supported.
Highlights
One of the limiting factors remains the lack of the complete sequences of the representative mitochondrial genomes which would allow their proper comparison with the relatively well-represented northern hemisphere congeneric mussels
The notion that the name M. chilensis should be used for native Chilean Mytilus mussels, with the same rank as M. galloprovincialis and M. edulis is supported
The Mytilus edulis species complex consists of three wellrecognized marine mussels: M. edulis, M. trossulus, M. galloprovincialis and several populations found on the southern hemisphere (Hilbish et al 2000)
Summary
The Mytilus edulis species complex consists of three wellrecognized marine mussels: M. edulis, M. trossulus, M. galloprovincialis and several populations found on the southern hemisphere (Hilbish et al 2000). The controversy surrounding the origin of antitropical distribution of Mytilus mussels and the taxonomic status of southern hemisphere populations remain unsolved, despite the efforts. One of the limiting factors remains the lack of the complete sequences of the representative mitochondrial genomes which would allow their proper comparison with the relatively well-represented northern hemisphere congeneric mussels.
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