Optimizing the growth and survival of marine fish larvae, while reducing the cost of production, is important for the development of viable hatcheries on an industrial scale. This study was aimed to determine whether Artemia sp. use could be minimized while maintaining high growth and survival, and low skeleton anomalies occurrence in greater amberjack (Seriola dumerili) during the weaning period. Five co-feeding protocols, named as 1% A, 25% A, 50% A, 75% A and 100% A, according to different initial Artemia sp. densities provided (0.02, 0.5, 1, 1.5 and 2 Artemia sp. ml⁻¹ day⁻¹, respectively) were tested from 32 to 48 days post-hatching (dph). Growth of larvae fed with protocols 1% A, 25% A and 50% A were significantly higher than larvae fed with protocols 75% A and 100% A. Survival increased as the effect of Artemia sp. increased. The incidence of total skeletal severe anomalies was high in larvae fed protocols 1% A and 25% A. Besides, the expression of growth and stress-related genes were higher at 40 dph and then decreased significantly at 48 dph in all the co-feeding protocols. The results obtained from this study suggest that the amount of Artemia sp. utilized can be significantly reduced during the weaning phase for this species.

中文翻译：

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不同共同喂养方案对大鰤 (Seriola dumerili, Risso 1810) 幼虫的影响

优化海水鱼幼体的生长和存活，同时降低生产成本，对于在工业规模上发展可行的孵化场很重要。这项研究的目的是确定卤虫是否。在断奶期间，大鰤 ( Seriola dumerili ) 在保持高生长和存活率的同时，可以最大限度地减少使用，并且骨骼异常发生率较低。五共进料协议，命名为1％A，25％A，50％A，75％A，100％A，根据不同的初始卤虫属 提供的密度（0.02、0.5、1、1.5 和 2 Artemia sp. ml ^-1天^-1, 分别) 在孵化后 (dph) 32 至 48 天进行测试。用 1% A、25% A 和 50% A 方案喂养的幼虫的生长显着高于用 75% A 和 100% A 方案喂养的幼虫。随着卤虫的影响，存活率增加。增加。在 1% A 和 25% A 的幼虫喂养方案中，总骨骼严重异常的发生率很高。此外，生长和应激相关基因的表达在 40 dph 时较高，然后在 48 dph 时在所有共同喂养中显着下降协议。从这项研究中获得的结果表明，卤虫的数量。在该物种的断奶阶段，利用可以显着减少。