[Genetic study on the intersexuality of males with female genital apertures in the oniscoid Armadillidium vulgare Latr.: interpretation and modalities of hereditary transmission].

The males with female genital apertures of the Niort population of A. vulgare are genetic males that have been made intersexual by two factors which are probably epigenetic : one is feminizing, the other masculinizing. The transmission of the masculinizing factor seems to be controlled by a genetic mechanism which, in the crossing of an intersexe with a genetic female, makes half the female issue turn into neo-males and intersexes.