ABSTRACT: The causes of cetacean stranding and death along the Catalan coast between 2012 and 2019 were systematically investigated. Necropsies and detailed pathological investigations were performed on 89 well-preserved stranded cetaceans, including 72 striped dolphins Stenella coeruleoalba, 9 Risso’s dolphins Grampus griseus, 5 bottlenose dolphins Tursiops truncatus, 1 common dolphin Delphinus delphis, 1 Cuvier’s beaked whale Ziphius cavirostris and 1 fin whale Balaenoptera physalus. The cause of death was determined for 89.9% of the stranded cetaceans. Fisheries interaction was the most frequent cause of death in striped dolphins (27.8%) and bottlenose dolphins (60%). Cetacean morbillivirus (CeMV) was detected on the Catalan coast from 2016 to 2017, causing systemic disease and death in 8 of the 72 (11.1%) striped dolphins. Chronic CeMV infection of the central nervous system was observed from 2018-2019 in a further 5 striped dolphins. Thus, acute and chronic CeMV disease caused mortality in 18% of striped dolphins and 14.6% of all 89 cetaceans. Brucella ceti was isolated in 6 striped dolphins and 1 bottlenose dolphin with typical brucellosis lesions and in 1 striped dolphin with systemic CeMV. Sinusitis due to severe infestation by the nematode parasite Crassicauda grampicola caused the death of 4 out of 6 adult Risso’s dolphins. Maternal separation, in some cases complicated with septicemia, was a frequent cause of death in 13 of 14 calves. Other less common causes of death were encephalomalacia of unknown origin, septicemia, peritonitis due to gastric perforation by parasites and hepatitis caused by Sarcocystis spp.

中文翻译：

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2012-2019年加泰罗尼亚海岸（西地中海）鲸类搁浅和死亡的原因

摘要：系统地调查了2012年至2019年之间加泰罗尼亚海岸鲸类搁浅和死亡的原因。尸体剖检和详述病理调查是在89保存良好链鲸类进行，包括72只条纹海豚原海豚coeruleoalba，9只Risso海豚鲸灰色链霉菌，5海豚宽吻海豚，1个共同海豚海豚DELPHIS，1柯氏喙鲸Ziphius cavirostris和1长须鲸鳞翅目。确定了89.9％的搁浅鲸类的死亡原因。渔业相互作用是条纹海豚（27.8％）和宽吻海豚（60％）中最常见的死亡原因。从2016年到2017年，在加泰罗尼亚海岸发现了鲸蜡状麻疹小病毒（CeMV），在72只条纹海豚中有8只（11.1％）引起全身性疾病并死亡。从2018年至2019年，在另外5只条纹海豚中观察到中枢神经系统的慢性CeMV感染。因此，急慢性CeMV疾病导致条纹海豚的死亡率为18％，而所有89只鲸鱼的死亡率为14.6％。布鲁氏菌ceti分离于6例典型的布鲁氏菌病病斑斑海豚和1瓶宽吻海豚中，以及全身性CeMV分离于1例斑纹海豚中。由于线虫寄生虫引起的严重侵袭引起的鼻窦炎Crassicauda grampicola导致6头成年Risso的海豚中有4头死亡。产妇分离，在某些情况下并发败血病，是导致14头小牛中13头死亡的常见原因。其他较不常见的死亡原因包括来历不明的脑软化症，败血症，由寄生虫引起的胃穿孔引起的腹膜炎和由肉囊菌属引起的肝炎。