Se evaluó el efecto de tres concentraciones de microalgas Chlorella sp. y Scenedesmus sp. en la densidad poblacional del cladócero, Ceriodaphnia sp. El experimento se llevó acabo en el laboratorio de cultivos auxiliares del AQUAREC – IIAP. Se utilizó 18 matraces de 1 litro (500 ml de volumen), densidad de siembra fue de 5 ind/matraz. Las muestras de zooplancton se obtuvieron del estanque 7 y 8 - IIAP, la identificación de Ceriodaphnia sp., se realizó por observación y diferenciación de los caracteres morfológicos; el aislamiento se realizó por el método del pipeteo capilar, posteriormente fueron aclimatados en vasos de 400 ml de capacidad por dos días. Para el cultivo de los Cladóceros se utilizaron dos tipos de microalgas Chlorella sp., y Scenedesmus sp., en concentraciones de (5ml), (10ml), (15ml), cada tratamiento con tres repeticiones, con una frecuencia de alimentaciÃ...

The effect of the chlorophytes Scenedesmus sp and Chlorella sp used as feed on the growth of the native cladoceran Ceriodaphnia sp were studied. Three treatments with three repetitions for each chlorophyte were used: T1 = 5 ml.L-1 (25 x 106 cells), T2 = 10 ml.L-1 (50 x 106 cells) and T3 = 15 ml.L-1 (75 x 106 cel). The physical and chemical characteristics of the water in the containers varied between 28.4 and 28.6 °C, pH between 6.57 and 7.36 and the dissolved oxygen between 6.34 and 6.66 mg/l between treatments. The results showed that Ceriodaphnia sp prefers the Chlorella sp microalgae, where diets with a concentration of 10 ml.l-1 (50 x 106 cells) were better than the other diets.

The effect of the chlorophytes Scenedesmus sp and Chlorella sp used as feed on the growth of the native cladoceran Ceriodaphnia sp were studied. Three treatments with three repetitions for each chlorophyte were used: T1 = 5 ml.L-1 (25 x 106 cells), T2 = 10 ml.L-1 (50 x 106 cells) and T3 = 15 ml.L-1 (75 x 106 cel). The physical and chemical characteristics of the water in the containers varied between 28.4 and 28.6 °C, pH between 6.57 and 7.36 and the dissolved oxygen between 6.34 and 6.66 mg/l between treatments. The results showed that Ceriodaphnia sp prefers the Chlorella sp microalgae, where diets with a concentration of 10 ml.l-1 (50 x 106 cells) were better than the other diets.