Merella Paolo, Cherchi Santino, Garippa Giovanni, Fioravanti Maria Letizia, Gustinelli Andrea, Salati Fulvio
Division of Parasitology and Parasitological Diseases, Department of Animal Biology, Sassari University, Via Vienna 2, 07100 Sassari, Italy.
Dis Aquat Organ. 2009 Sep 23;86(2):169-73. doi: 10.3354/dao02115.
Two different batches of meagre Argyrosomus regius were stocked in the same floating cage located in north-eastern Sardinia (western Mediterranean Sea). After 4 mo, the fish started showing non-specific disease signs, such as lethargy, emaciation, gill anaemia and mortality. In total 65 specimens of meagre of both stocks were sampled for parasitological and microbiological analysis, and only 1 species of parasite, the microcotylid monogenean Sciaenacotyle panceri, was found on the gills of caged meagre. No protozoan or other metazoan parasites were found and no bacteria or viruses were isolated. After the outbreak, a total mortality rate of 5 to 10% was estimated for the older fish stock, while no noteworthy mortality was recorded in younger fish (<2%). This is the first account of S. panceri on the gills of cultured meagre as causative agent of disease and mortality. The effects of the presence of this parasite emphasise the need for disease control strategies of cultured meagre, and investigating the transfer of microcotylids from wild to caged fish.
两批不同的欧洲无须鳕被放养在位于撒丁岛东北部（地中海西部）的同一个浮动网箱中。4个月后，鱼开始出现非特异性疾病症状，如嗜睡、消瘦、鳃贫血和死亡。总共采集了两批欧洲无须鳕的65个样本进行寄生虫学和微生物学分析，在网箱养殖的欧洲无须鳕的鳃上仅发现了1种寄生虫，即微杯科单殖吸虫潘氏鳞盘虫。未发现原生动物或其他后生动物寄生虫，也未分离出细菌或病毒。疫情爆发后，估计较老鱼群的总死亡率为5%至10%，而幼鱼（<2%）未记录到明显死亡。这是首次报道潘氏鳞盘虫作为养殖欧洲无须鳕鳃部疾病和死亡的病原体。这种寄生虫的存在所产生的影响凸显了对养殖欧洲无须鳕疾病控制策略的需求，以及调查微杯科吸虫从野生鱼向网箱养殖鱼转移的必要性。
