Recently, the use of microalgal bioproducts in aquaculture research has gotten consideration. The current study aims to screen the biochemical components of three microalgae: Nannochloropsis salina, Chlorella salina and Tetraselmis chuii for using in the feeding of Cyclops abyssorum divergens copepods that are suitable prey for the mouth gape of the cultured fish larvae. The effect of different initial densities of these algal cells used for copepods feeding was determined by estimation of proximate composition, polyunsaturated fatty acids (PUFAs), amino acids (AAs) and enzyme activities of copepods. N. salina showed high protein and lipid contents, while C. salina presented high carbohydrate content. C. salina and T. chuii presented high PUFAs, with proportions of 22.35 and 22.67%, respectively, and are considered as the source of n-3 fatty acids. Also, they had higher concentrations of total AAs (21.46 and 24.14 mg. g⁻¹ dry wt., respectively). The experiment study showed that the C. salina diet at an initial concentration of 1 × 10⁶ cells ml⁻¹ resulted in a maximum increase of copepods population density (503.3%) and high protease and trypsin activities (42.65 and 31.80 U. mg⁻¹ protein, respectively) in copepods. T. chuii diet at an initial concentration of 1 × 10⁶ cells ml⁻¹ resulted in a maximum protein, lipid, PUFAs and AAs contents of copepods. Therefore, C. abyssorum divergens copepods after 18 days feeding with an initial concentration of 1 × 10⁶ C. salina or T. chuii cells ml⁻¹ are the suitable candidate diets in larviculture because they achieved higher productivity and attained better nutritional composition of the copepods.

最近，微藻生物产品在水产养殖研究中的应用得到了考虑。目前研究的目的是筛选3种微藻的生化成分：微拟球藻，小球藻藻和四爿chuii用于使用的馈送水蚤abyssorum divergens桡足类是用于养殖鱼幼体的嘴口裂合适猎物。通过估计桡足类的近似组成、多不饱和脂肪酸 (PUFA)、氨基酸 (AA) 和酶活性，确定了这些用于桡足类喂养的藻类细胞的不同初始密度的影响。N. salina蛋白质和脂质含量较高，而C. salina呈现高碳水化合物含量。C. salina和T. chuii呈现高 PUFA，比例分别为 22.35 和 22.67%，被认为是n -3 脂肪酸的来源。此外，它们的总 AA 浓度更高（分别为 21.46 和 24.14 mg.g ^-1干重）。实验研究表明，初始浓度为 1 × 10 ^{6 个}细胞 ml ^-1的C. salina饮食导致桡足类种群密度的最大增加（503.3%）和高蛋白酶和胰蛋白酶活性（42.65 和 31.80 U. mg ^{- 1 种}蛋白质）在桡足类动物中。T. chuii饮食初始浓度为 1 × 10^{6 个}细胞 ml ^-1导致桡足类的蛋白质、脂质、PUFA 和 AA 含量最高。因此，在用初始浓度为 1 × 10 ⁶ C. salina或T. chuii细胞 ml ^-1喂养 18 天后，C. abyssorum divergens桡足类是幼虫培养中合适的候选饮食，因为它们获得了更高的生产力并获得了桡足类。