Deep-water shrimps remain some of the less understood decapod crustacean taxa, despite the high commercial and ecological importance. The lack of knowledge on adults and larval stages of many species results in an incomplete view of the biology, distribution, dispersal and connectivity, essential knowledge for conservation and stock management. In zooplankton samples, larvae of deep-water shrimps are usually found in low abundances. Here, we address the insufficiently studied topics of distribution and transport of deep-water shrimp larvae, providing information on potential pathways and mechanisms of dispersal. The work focuses on southern Portuguese waters, giving important indications for deep-water shrimp species worldwide. Physical-ecological modelling was used to examine the dispersal of larvae of the deep-water rose shrimp, Parapenaeus longirostris, that were found distributed over shelf waters in the study region. In situ spatial abundances were examined, and ontogenetic vertical distributions and sites of larval release were included in the models. The circulation in the vicinity of submarine canyons and deep moats promoted relatively shallower positions of simulated particles. Passive drifts were insufficient for larvae to reach the uppermost water layers, while the vertical distribution adopted, in the upper or lower water layers, was highly important, dictating the direction of the transport and the retention over shelf waters. Slope or shelf larval releases influenced the dispersal patterns and the concentration of particles over productive waters, suggesting that the onshore movement of females during spawning may benefit the larval retention over shelf waters.

尽管具有很高的商业和生态重要性，但深水虾仍然是一些鲜为人知的十足甲壳纲类群。对许多物种的成年和幼虫阶段缺乏知识导致对生物学，分布，传播和连通性，保护和种群管理的基本知识的看法不完整。在浮游动物样本中，通常以低丰度发现深水虾的幼体。在这里，我们解决了对深水虾幼虫的分布和运输研究不足的问题，提供了有关潜在传播途径和传播机理的信息。该工作着重于葡萄牙南部水域，为全世界深水虾种类提供了重要指示。利用物理生态学模型研究了深水玫瑰虾幼虫的扩散，长对虾（Parapenaeus longirostris）被发现分布在研究区域的架子水上。原位检查了空间丰度，并在模型中包括了个体发育的垂直分布和幼虫释放的部位。海底峡谷和深at沟附近的环流促进了模拟颗粒相对较浅的位置。被动漂移不足以使幼虫到达最上层水层，而在上层或下层水层中采用的垂直分布非常重要，这决定了运输的方向和对架子水的保留。斜坡或架子上的幼体释放影响了生产水域的扩散模式和颗粒浓度，这表明产卵期间雌性的陆上运动可能有利于幼虫在架子上的滞留。