The striped dolphin, Stenella coeruleoalba, is one of the most abundant cetacean species off the Western Iberian coast, however, studies on the species regarding biology, ecology, threats or conservation efforts are lacking. This study investigates stranding patterns (years 1981–2014) and diet (2002–2014) of striped dolphins (Stenella coeruleoalba) off the Portuguese mainland coast. Stranded animals were sampled along the whole coast (n = 252). Most stranded striped dolphins were recorded in the first half of the year and strandings increased over time. Analysis of stomach contents (n = 36) showed that striped dolphins in the area are mostly piscivorous (80% by number and weight of the diet), taking pelagic, meso-pelagic and demersal species. In terms of reconstructed biomass prey, sardine (Sardina pilchardus) and blue whiting (Micromesistius poutassou) were the most important. Prey items revealed that both sexes forage at a range of depths (pelagic and demersal systems) in both neritic and oceanic habitats, although females feed more often in coastal waters. Moreover, diet results also indicate that striped dolphins may co-occur with other neritic cetacean species, such as the common dolphin, Delphinus delphis, thus sharing some preferred prey species. The study revealed that striped dolphins on the Iberian coast interact with coastal fisheries sharing the same target species. Management measures for fisheries will need to be consistent with an ecosystem-based approach.

条纹海豚，Stenella coeruleoalba，是伊比利亚西部沿海最丰富的鲸类物种之一，但是，关于该物种的生物学，生态，威胁或保护工作尚缺乏研究。这项研究调查了葡萄牙大陆沿岸海豚（Stenella coeruleoalba）的搁浅模式（1981年至2014年）和饮食（2002年至2014年）。在整个海岸上对被困动物进行了采样（n  = 252）。在该年上半年记录了大多数搁浅的条纹海豚，随着时间的流逝，搁浅的数量增加了。胃内容物分析（n = 36）表明该地区的条纹海豚大多数是食鱼性的（按饮食的数量和重量计为80％），它们是浮游性，中游浮游性和深海鱼类。就重建的生物量猎物而言，沙丁鱼（Sardina pilchardus）和蓝鳕（Micromesistius poutassou）是最重要的。猎物显示，在雌性和海洋生境中，两性都在一定深度（上层和下层系统）觅食，尽管雌性在沿海水域觅食的频率更高。此外，饮食结果还表明，带条纹的海豚可能与其他象鲸海豚，德尔福海豚，从而分享一些偏爱的猎物。该研究表明，伊比利亚海岸上的条纹海豚与共享相同目标物种的沿海渔业相互作用。渔业管理措施必须与基于生态系统的方法保持一致。