Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA.

ABSTRACT: Doubly uniparental inheritance (DUI) of mitochondrial DNA is a rare phenomenon occurring in some freshwater and marine bivalves and is usually characterized by the mitochondrial heteroplasmy of male individuals. Previous research on freshwater Unionida mussels showed that hermaphroditic species do not have DUI even if their closest gonochoristic counterparts do. No records showing DUI in a hermaphrodite have ever been reported. Here we show for the first time that the hermaphroditic mussel Semimytilus algosus (Mytilida), very likely has DUI, based on the complete sequences of both mitochondrial DNAs and the distribution of mtDNA types between male and female gonads. The two mitogenomes show considerable divergence (34.7%). The presumably paternal M type mitogenome dominated the male gonads

SUBMITTER: Lubosny M 

PROVIDER: S-EPMC7347871 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature