Abstract The objective of this study was to evaluate different hatchery systems used for the larviculture of the Macrobrachium carcinus based on survival, larval development and production of post-larvae. The experimental culture was carried out in three phases designated as Phase I (Zoea VI to VIII – ZVI – VIII), Phase II (Zoea VIII to X – ZVIII – X), and Phase III (Zoea X to PL – ZX – PL), with densities of 30, 27.5 and 25 larvae / L, respectively. The M. carcinus larvae (ZVI) were reared in four culture systems, two being open (Greenwater – GW and Clearwater – CW) and two being closed (Biofloc – BFT and Bio-filter – RAS), distributed in twelve 10 L plastic containers, filled with 20 ppt brackish water, equipped with constant aeration, and water circulated by air lift and heated with thermostat (∼30 °C). The GW treatment was maintained with Chlorophyceae algae in the density of 3 to 5 × 105 cells/mL. In the CW, the water was previously filtered through a 5 µm mesh screen, sterilized with 10 ppm active chlorine and, dechlorinated with vitamin C and subjected to aeration for 24 h. The BFT received water rich in bioflocs that was matured prior to the experiment and used molasses as a source of organic carbon. In the RAS, the culture water circulated through an external “Dry-Wet” biological filter. The feeding was carried out ad libitum four times daily, alternating a wet diet formula with a commercial diet, which was supplemented with newly hatched Artemia nauplii at a rate of 40 to 50 per larvae/day. Temperature, dissolved oxygen and pH were monitored daily and the salinity two times per week. Total ammonia, nitrite, nitrate, orthophosphate, alkalinity, total suspended solids, chlorophyll-a, COD and BOD were also analyzed. The best water quality (P

中文翻译：

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不同养殖系统中彩绘河虾 Macrobrachium carcinus 的幼虫养殖

摘要 本研究的目的是根据存活、幼虫发育和后期幼虫的生产，评估用于巨蟹鱼幼虫养殖的不同孵化系统。实验培养分三个阶段进行，指定为阶段 I（Zoea VI 至 VIII – ZVI – VIII）、阶段 II（Zoea VIII 至 X – ZVIII – X）和阶段 III（Zoea X 至 PL – ZX – PL） ，密度分别为 30、27.5 和 25 条幼虫/L。M. carcinus 幼虫 (ZVI) 在四个培养系统中饲养，两个是开放的（Greenwater – GW 和 Clearwater – CW），两个是封闭的（Biofloc – BFT 和 Bio-filter – RAS），分布在 12 个 10 L 塑料容器中, 充满 20 ppt 微咸水, 配备恒定曝气, 水通过空气提升循环并用恒温器加热 (~30 °C)。GW 处理以 3 至 5 × 105 个细胞/mL 的密度维持叶绿科藻类。在 CW 中，水预先通过 5 µm 筛网过滤，用 10 ppm 活性氯消毒，用维生素 C 脱氯，然后曝气 24 小时。BFT 接收富含生物絮凝物的水，该水在实验前成熟并使用糖蜜作为有机碳来源。在 RAS 中，培养水通过外部“干湿”生物过滤器循环。每天随意喂食四次，交替使用湿饲料配方和商业饲料，以每只幼虫 40 至 50 只/天的速度补充新孵化的卤虫无节幼体。每天监测温度、溶解氧和 pH 值，每周监测盐度两次。总氨、亚硝酸盐、硝酸盐、正磷酸盐、还分析了碱度、总悬浮固体、叶绿素-a、COD 和 BOD。最佳水质（P