The growth of two strains (Coche and Boca Chica) of the microalgae Dunaliella salina was studied in laboratory with the aim of to evaluate the effect of two types of light intensity (10000 and 20000 lux) over growth parameters. The cultures were performed in bottles in water with 270 units of salinity, concentration of nutrients of 4 mM, pH between 7 and 7,5, and a light cycle of 12:12. Result indicated that higher densities and growth rates were obtained in both strains to 10000 lux, however the strain Boca Chica showed an increment higher than the strain Coche in both light intensities. The maximum cellular densities for Boca Chica and Coche were 8,06x10⁶ and 9,76x10⁵ cel/ml respectively. The analyzed strains showed significant differences (P<0,05) in the population parameters (K and TD) in a same light intensity. All the curves of growth presented its better adjusted with a polynomial logistical pattern.