Journal
BIOLOGY LETTERS
Volume 4, Issue 6, Pages 700-703Publisher
ROYAL SOC
DOI: 10.1098/rsbl.2008.0286
Keywords
sex determination; sex chromosomes; tilapia
Categories
Funding
- USDA-CSREES [2004-36205-14205]
- BARD
- US Israel Binational Agricultural Research and Development Fund [IS-3561-04]
- Vaadia-BARD postdoctoral fellowship award [FI-338-2003]
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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.
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