Identification of Gender-associated Mitochondrial Haplotypes in Anodonta Anatina (bivalvia: Unionidae)
نویسنده
چکیده
Doubly uniparental inheritance (DUI) of mitochondrial DNA, different from maternal inheritance, is known to occur in five bivalve families (Mytilidae, Veneridae, Unionidae, Margaritiferidae, Hyriidae). DUI involves two types of mitochondrial DNA: F type, inherited from the mother and M type, inherited from the father. Females have only F type mtDNA, males have both types, M type being located in their gonads, F type in their somatic tissues. Among freshwater bivalves known to show DUI, only Anodonta woodiana occurs in Poland. The aim of this study was to ascertain if DUI occurred in another native bivalve, Anodonta anatina, based on DNA sequence of mitochondrial gene of cytochrome oxidase subunit I (cox1). M haplotype was found in male gonads, and F haplotype in somatic tissues of both sexes. Seven sequences were obtained for each F and M haplotypes, 625–709 base pairs long. Variation of 0.2 and 0.3% was found within F and M cox1 sequences, respectively, and 29–32% variation between them.
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