title: Sex-linked markers and microsatellite locus duplication in the cichlid species Oreochromis tanganicae.
abstract: Cichlid species of the genus Oreochromis vary in their genetic sex-determination systems. In this study, we used microsatellite DNA markers to characterize the sex-determination system in Oreochromis tanganicae. Markers on linkage group 3 were associated with phenotypic sex, with an inheritance pattern typical of a female heterogametic species (WZ-ZZ). Further, locus duplication was observed for two separate microsatellite markers on the sex chromosome. These results further advance our understanding of the rapidly evolving sex-determination systems among these closely related tilapia species.
authors.affiliation: Department of Poultry and Aquaculture, Institute of Animal Science, Agricultural Research Organization, Bet-Dagan 50250, Israel. avnerc@volcani.agri.gov.il
authors.forename: Avner
authors.initials: A
authors.lastname: Cnaani
authors.forename: Thomas D
authors.initials: TD
authors.lastname: Kocher
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005260:Female; D005819:Genetic Markers; D040582:Inheritance Patterns; D008297:Male; D018895:Microsatellite Repeats; D012730:Sex Chromosomes; D019849:Sex Determination Processes; D017210:Tilapia / Q000235:genetics*
chemical_list: D005819:Genetic Markers