Conflict between Feminizing Sex Ratio Distorters and an Autosomal Masculinizing Gene in the Terrestrial Isopod Armadillidium Vulgare Latr

摘要: Female sex determination in the pill bug Armadillidium vulgare is frequently under control of feminizing parasitic factors (PSF). One these PSF an intracytoplasmic Wolbachia-like bacterium (F), while other (f) suspected being F-bacterial DNA sequence unstably integrated into host genome. In most wild populations harboring PSF, all individuals are genetic males (ZZ), and female phenotypes occur only due to presence which overrides male determinant carried by Z chromosome (females thus ZZ +F or +f neo-females). Here we report effects conflict between a dominant autosomal masculinizing gene (M) on phenotypes. The M able override effect f factor and, consequently, may be restored. However, unable restore when competing with F bacteria. It seems that main delay expression bacteria slightly, inducing intersex Most intersexes functional females, transmit gene. frequency its ratio discussed.