Abstract The aim of this research was to investigate the efficacy of seven different diets including live Acetes (LA), minced shrimp meat (MSM), locally formulated feed (LFF), a commercial feed (CF), and three combination diets of LA with MSM (LA + MSM), LFF (LA + LFF) and CF (LA + CF) on the nursery production of mud crab (Scylla paramamosain) crablets. To avoid the influence of cannibalism on the test diets, these diets were simultaneously tested under individual and communal culture conditions. For individuals, individual one-day-old megalopa was reared in 0.5 L plastic beakers. For commune, 250 megalopae were reared in earthen dugout holes. The average survival (mean ± SD) of first crablet stage was 93.6 ± 5.56 in individual culture system and 67.0 ± 14.95 in communal culture system, however, the gap survival between individual and communal culture within the different diets was similar, indicating that cannibalism didn't effect on results of evaluating test diets. The LA resulted in higher survival of crablets than MSM, LFF and CF, but not significantly different to combination diets. All megalopa fed exclusively LA or LA + CF synchronously moulted into the crablet stage one day earlier than those fed MSM, LFF, CF, LA + MSM and LA + LFF. However, none of the test diets influenced the growth of the first crablets. The present research indicates that all the test diets are appropriate to rear megalopa into crablet stage as reflected by successful moults and high survival of first crablets, in which LA is the optimal diet that resulted in increased survival, synchronous moulting, and reduced duration period required for metamorphosis.

中文翻译：

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选择当地可用的饲料，将巨蟹蟹养殖至第一阶段

摘要 本研究的目的是调查七种不同饮食的功效，包括活醋 (LA)、虾肉糜 (MSM)、本地配方饲料 (LFF)、商业饲料 (CF) 以及 LA 与 LA 的三种组合饮食。 MSM (LA + MSM)、LFF (LA + LFF) 和 CF (LA + CF) 对泥蟹 (Scylla paramamosain) 小蟹苗的育苗生产。为了避免同类相食对测试饮食的影响，这些饮食同时在个体和社区培养条件下进行测试。对于个体，在 0.5 L 塑料烧杯中饲养 1 日龄的巨蜥。对于公社，在土坑中饲养了 250 只巨蜥。在个体养殖系统中，第一个小蟹阶段的平均存活率（平均值±标准差）为 93.6±5.56，在公共养殖系统中为 67.0±14.95，然而，不同饮食中个体和社区文化之间的差距存活率相似，表明同类相食对评估测试饮食的结果没有影响。LA 导致小蟹的存活率高于 MSM、LFF 和 CF，但与组合饮食没有显着差异。所有只喂食 LA 或 LA + CF 的巨蜥比喂食 MSM、LFF、CF、LA + MSM 和 LA + LFF 的那些早一天同步蜕皮到小蟹阶段。然而，没有一种测试饮食影响第一只小蟹的生长。目前的研究表明，所有试验日粮都适合将巨蟹饲养到小蟹阶段，这体现在成功换羽和第一只小蟹的高成活率上，其中 LA 是最佳饮食，可提高成活率，同步换羽，