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The effect of six diets including Scenedesmus quadricauda), manure (cattle+poultry, 1:1 ratio), vegetable (spinach+parsely+coriander, 1:1:1 ratio), algae+soil, vegetable+soil, and manure+soil were examined on culture of freshwater copepod, Acanthocyclopsrobustus, under the experimental conditions of 23±1ºC, 12 hours dark: 12 hours light photoperiod, and light intensity of 60 µmol photons/m²/s. The maximum population density (1282.6±163.7 individuals/L), maximum specific growth rate (SGR) (0.17±0.0 /day) and minimum doubling time (Dt) (4.0±0.1 days) were obtained when A. robustus fed on algae+soil. The nauplii production was 727.3±42.4 (±SE),  272.0±23.5, 267.6±17.7, 147.0±18.2, 33.6±3.8 and 25.0±7.1 ind./L and copepodit production was 311.3±26.8, 124.3±11.1, 183.0±13.0, 59.0±7.1, 14.3±8.1, and 17.6±3.6 ind./L in algae, algae+soil, vegetable, vegetable+soil, manure+soil, and manure, respectively. Correspondingly, the adult production was 208.5±26.8, 51.6±16.5, 192.7±23.7, 91.7±28.4, 8.7±5.4 and 8.7±3.6 ind./L, respectively. The maximum body length (663.8±29.1 µm) and width (526.2±23.7 µm) of A. robustus were recorded when fed with vegetable+soil and vegetable, respectively. The number of nauplii, copepodit, adults, length and width were significantly correlated with EC, BOD and COD. According to results, the A. robustus has suitable potential culture on algal and non-algal diets based on production, growth, body size, BOD and COD, but the better performance obtain on algae+soil and vegetable.

Keywords: robustus Acanthocyclops, Scenedesmus quadricauda, A. robustus, Scenedesmus quadricauda, Soil, Vegetable, Manure

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