Artemia franciscana metanauplii widely is being used in cultured marine species. The aim of this study was to evaluate the effect of feeding with two marine and two freshwater microalgae as feed alone or in combination on survival, growth, and fatty acid composition of A. franciscana metanauplii and on predominant bacterial species of the rearing water. Five microalgae diets were used for feeding: Amphora viridis (AV), Chlamydomonas reinhardtii (CR), Chlorella vulgaris (CV), and Dunaliella salina (DS) and a combination of four microalgae (MX diet). Artemia franciscana fed AV, DS, and MX diets showed higher survival than that fed CR and CV diets. MX group showed higher total length among groups (P < 0.05). Total n-3 fatty acid content was higher in the Artemia franciscana fed MX group, whereas total n-3 HUFA levels were found significantly higher in Artemia franciscana fed DS and AV diet (P < 0.05). The bacterial load of the rearing water was significantly decreased with the use of CV; therefore, the CV diet might be suggested to be used in Artemia franciscana grow-out for reducing bacterial proliferation. According to 16S rRNA gene sequencing results, four different bacterial species including Carnobacterium maltaromaticum, Pseudomonas stutzeri, Pseudoalteromonas sp., and Vibrio sp. species were found predominantly in the rearing water of Artemia franciscana.

Artemia franciscana metauplii 被广泛用于养殖的海洋物种。本研究的目的是评估单独或组合饲喂两种海洋和两种淡水微藻对A. franciscana metanauplii 的存活、生长和脂肪酸组成以及养殖水中主要细菌种类的影响。五种微藻饮食用于饲养：绿色双耳藻(AV) 、莱茵衣藻(CR) 、普通小球藻(CV) 和盐藻(DS) 以及四种微藻的组合（MX 饮食）。卤虫喂食 AV、DS 和 MX 饮食的存活率高于喂食 CR 和 CV 饮食的存活率。MX 组显示出较高的组间总长度（P < 0.05）。在卤虫喂养 MX 组中总 n-3 脂肪酸含量较高，而在卤虫喂养 DS 和 AV 饮食中发现总 n-3 HUFA 水平显着较高（P < 0.05）。使用CV显着降低了养殖水的细菌负荷；因此，CV 饮食可能被建议用于卤虫养成中，以减少细菌增殖。根据 16S rRNA 基因测序结果，包括Carnobacterium maltaromaticum、施氏假单胞菌、假交替单胞菌属和弧菌属。物种主要存在于Artemia franciscana的养殖水中。