Sex Determination and Monosex Female Production in Yellow Perch

Yellow perch display a sexual growth dimorphism, in which females grow faster and reach a larger ultimate size than males. Sex-differentiated and adult yellow perch have a fused single ovary, while having paired testes. For gonad-specifically expressed genes, several pathways associated with gonadal development and sex maintenance were found. The possibility to search and develop sex identification DNA markers on a species depends on the gender determination system. Crossing sex-reversed neomales with normal females is a preferred method to generate large-scale monosex female yellow perch production. In genetic determination models, some DNA markers have been identified in species where one sex possesses a unique chromosome or DNA sequence. It was suggested that yellow perch belong to female homogametic sex, based on the results that all-female progenies were obtained by crossing normal females with sperm from sex-reversed intersex genetic females.