Preliminary Investigation into Polymorphism of Microsatellite in Prl-1 Promotor and Growth Performance of Nile Tilapia in Saline Wate

Abstract

Tilapia are among the world's most important aquacultural fin fish. Tilapia have been farmed in both fresh- and saline aquaculture systems. Aquaculture of Tilapia in saline water has a very high potential in Vietnam. However, available strains of Tilapia differ greatly in their growth in different salinities. This paper presents preliminary investigation into association of genoptye of microsatellite in Prl-1 promoter and growth performance of the selected RIA-I strain of Nille tilapia cultured in saline water. Progeny of 7 tilapia families were grown in two different salinities of 14-15%o and 20-22%o for a period of 87 days. Growth performance and genotype of microsatellite in Prl-1 promoter of fish were compared and further research towards better understanding relationship between molecular marker and growth performance of tilapia in saline environment is briefly discussed.