Detection of mitochondrial DNA heteroplasmy suggests a doubly uniparental inheritance pattern in the mussel Mytella charruana
Keywords:
DUI, COI, estuarine, Mytilidae, BivalviaAbstract
The unusual type of mitochondrial DNA (mtDNA) transmission in which females pass on their mtDNA F to both sons and daughters, and males pass on their mtDNA M to their sons, is termed Doubly Uniparental Inheritance (DUI) and has been observed in several bivalve mollusk families, including the Mytilidae. The present study found mitochondrial heteroplasmy in Mytella charruana, a tropical estuarine mytilid, which is most likely due to the occurrence of DUI. Cytochrome oxidase c subunit I (COI) sequences provide evidence for the presence of mtDNA M in the gonad and adductor muscle of male M. charruana. Intraspecific COI mtDNA F and mtDNA M mitotype divergence (p-distances) in M. charruana ranged from 20.5% to 20.8%. COI phylogenetic trees suggest that mtDNA M arose before M. charruana, Perna perna and Mytella guyanensis split, though independently of the DUI event that occurred in the genera Mytilus and Brachidontes. The comparison of COI gene products of mtDNA M among M. charruana and other bivalves, including mytilids, has shown that they all have important differences, suggesting independent evolutionary changes in their male COI lineages.Downloads
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Published
2012-06-04
How to Cite
Alves, F. A., Beasley, C. R., Hoeh, W. R., Rocha, R. M. da, Simone, L. R., & Tagliaro, C. H. (2012). Detection of mitochondrial DNA heteroplasmy suggests a doubly uniparental inheritance pattern in the mussel Mytella charruana. Revista Brasileira De Biociências, 10(2), 176. Retrieved from https://seer.ufrgs.br/index.php/rbrasbioci/article/view/115587
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