Consequently, the two independent mitochondrial lineages exist. Under DUI all males are heteroplasmic and pass their mitochondrial DNA to male offspring whereas females pass their mitochondria to all their offspring ( Skibinski, Gallagher & Beynon, 1994 Zouros et al., 1994). The reconstructions based on M and F mitogenomes which were separated for many millions of years, and subject to differing evolutionary dynamics, are fully congruent.įreshwater mussels from the order Unionoida are known for the widespread occurrence of doubly uniparental inheritance (DUI) of mitochondria ( Walker et al., 2006). It increases the available set of mitogenomic pairs to 18 species per family, and allows unambiguous reconstruction of phylogenetic relationships among them. Here we provide, for the first time, complete sequences of the M mitogenomes sampled from Polish populations of two species: native Unio pictorum and invasive Sinanodonta woodiana. Moreover, since long branch attraction phenomenon can bias reconstructions if only a few but highly divergent taxa are considered, the shortage of the faster evolving paternally inherited mitogenome sequences is a real problem. This is a problem for phylogenetic reconstruction because it limits the use of both mitogenomic data sets. However, the number of complete sequences of the maternally inherited mitogenomes of these animals available in GenBank greatly exceeds that of the paternally inherited mitogenomes. The early divergence of these two mitogenomic lineages gives a unique opportunity to use two mitogenomic data sets in a single phylogenetic context. Complete paternally inherited mitogenomes of two freshwater mussels Unio pictorum and Sinanodonta woodiana (Bivalvia: Unionidae) PeerJ 6: e5573 įreshwater bivalves from the family Unionidae usually have two very divergent mitogenomes, inherited according to the doubly uniparental model. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. 2 University of Szczecin, Faculty of Biology, Department of Genetics, Szczecin, Poland DOI 10.7717/peerj.5573 Published Accepted Received Academic Editor Rudiger Bieler Subject Areas Biogeography, Conservation Biology, Evolutionary Studies, Genetics, Freshwater Biology Keywords DUI, mtDNA, Mitogenomics, Phylogeny, Molecular clock Copyright © 2018 Burzyński and Soroka Licence This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed.
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