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Larviculture of the painted river prawn Macrobrachium carcinus in different culture systems
Aquacultural Engineering ( IF 3.6 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.aquaeng.2020.102139
João Paulo V. Lima , Fabiana P. Melo , Maria Gabriela P. Ferreira , Dallas L. Flickinger , Eudes S. Correia

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:

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
更新日期:2021-02-01
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