PDF(Pubmed)
Abstract：
Every year, ulcerative dermal necrosis (UDN) affects salmonids that spend most of their lives in the sea during their migration to the rivers of northern Poland to spawn. The clinical form of the disease manifests itself in ulcerative skin lesions, which lead to significant weakening of the fish and, in most cases, result in their death. This study was carried out on samples taken from sea trout in the Słupia River in northern Poland. In order to identify the pathogen, experiments on the transmission of the disease were carried out, and additional histopathological, microbiological and electron microscopic examinations were performed. As a result of these studies, it was possible to experimentally transfer the disease from sick to healthy fish. The results indicate a complex etiology of the disease (lack of a clearly defined pathogen), in which the change in the environment from salty to freshwater triggers the related changes in skin physiology, which are the main causes of increased susceptibility to the development of the disease.
摘要：
每年,溃疡性真皮坏死（UDN）会影响鲑鱼，这些鲑鱼在迁移到波兰北部的河流产卵时大部分时间都在海里度过。这种疾病的临床形式表现为溃疡性皮肤病变，这导致鱼类的显著弱化，在大多数情况下,导致他们的死亡。这项研究是针对波兰北部Sswupia河中的鳟鱼采集的样本进行的。为了鉴定病原体，进行了关于疾病传播的实验，和额外的组织病理学，进行了微生物学和电子显微镜检查。作为这些研究的结果,有可能通过实验将疾病从患病的鱼转移到健康的鱼。结果表明该疾病的病因复杂（缺乏明确定义的病原体），其中环境从咸到淡水的变化引发了皮肤生理的相关变化，这是对疾病发展的易感性增加的主要原因。
