de Azevedo Ana Manuela, Losada Ana Paula, Ferreiro Isabel, Riaza Ana, Losada Vanesa, Russo Tommaso, Boglione Clara, Vázquez Sonia, Quiroga María Isabel
Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary Science, University of Santiago de Compostela, Campus Universitario S/N, 27002 Lugo, Spain.
Biology Department, Ghent University, Ledeganckstraat 35, 9000 Ghent, Belgium.
Animals (Basel). 2020 Dec 24;11(1):22. doi: 10.3390/ani11010022.
The high incidence of skeletal anomalies in Senegalese sole () still constitutes a bottleneck constraining its production. There are diverse commercially available products for the enrichment of live preys, but few reports of their influence on skeletogenesis in Senegalese sole. This study evaluated the presence of vertebral anomalies in postlarvae and juvenile Senegalese sole fed with spp. metanauplii enriched with four commercial products (EA, EB, EC, and ED) in a fish farm. The most frequent alterations consisted of deformations of the neural/haemal arches and spines and fusions and deformations of hypurals, epural, or parhypural. The correspondence analysis ordered fish from each age in separated semiaxis, indicating the presence of different anomaly patterns for the two sampled stages. The results showed only very light changes in the frequency of vertebral abnormalities among tested enrichment products, i.e., individuals from EC and EA lots displayed less vertebral body anomalies and/or vertebral column deviations at 31 and 105 days after hatching, respectively. The existence of a large shared malformation pattern in all the experimental groups leads to impute to the rearing conditions as the main driving factor of the onset of such group of anomalies, probably masking some dietary effect.
塞内加尔鳎（）骨骼异常的高发生率仍然是限制其产量的一个瓶颈。有多种市售产品可用于强化活饵，但关于它们对塞内加尔鳎骨骼发育影响的报道很少。本研究评估了在一家养鱼场中，用四种商业产品（EA、EB、EC和ED）强化的卤虫无节幼体喂养的塞内加尔鳎仔鱼和幼鱼中椎体异常的情况。最常见的变化包括神经/血弓和棘的变形以及尾下骨、尾上骨或副尾下骨的融合和变形。对应分析将每个年龄段的鱼排列在不同的半轴上，表明两个采样阶段存在不同的异常模式。结果显示，在测试的强化产品中，椎体异常频率只有非常轻微的变化，即来自EC组和EA组的个体在孵化后31天和105天时分别表现出较少的椎体异常和/或脊柱偏差。所有实验组中存在大量共同的畸形模式，这导致将饲养条件视为这类异常发生的主要驱动因素，可能掩盖了一些饮食影响。
