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首页> 外文期刊>Ocean & coastal management >Management issues regarding caligidosis treatment on salmon farms in Chile affected by infection salmon anaemia virus (ISAV), Piscirickettsia salmonis and Neoparamoeba perurans
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Management issues regarding caligidosis treatment on salmon farms in Chile affected by infection salmon anaemia virus (ISAV), Piscirickettsia salmonis and Neoparamoeba perurans

机译：智利鲑鱼养殖场受感染鲑鱼贫血病毒（ISAV），鲑鱼立克次氏体和秘鲁新寄生虫影响的处理方法

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Chile is one of the world's most prolific producers of farmed salmon, but has suffered great economic losses due to fish diseases. In this study, the interactions of treatments for the caligidosis agent Caligus rogercresseyi and major diseases in salmon aquaculture caused by Piscirickettsia salmonis, Infectious Salmon Anaemia Virus and Neoparamoeba perurans were determined. This information is essential to develop an integrated management strategy in Chile. Immunosuppression due to fish stress, increased by frequent chemical baths to treat C. rogercresseyi, was considered to be the main source of chronic caligidosis and high prevalence of other diseases. P. salmonis and pathogenic ISAV were detected using PCR analysis at all farms sampled, but N. perurans at one farm in April only. In 2011, individuals of Oncorhynchus mykiss with gill pathology not caused by N. perurans and receiving chemical baths at Farm 1 were affected by 100% prevalence of sea lice. Similar prevalence was observed on Salmo salar at Farm 2, which did not receive bath treatments. Both farms were under similar oceanographic influence. A prevalence of 80% of a pathogenic strain of ISAV, but without clinical symptoms, was detected at Farm 2, combined with low sea lice presence and almost complete absence of ovigerous females (OF) even though no treatment had been applied. S. salar sampled at Farm 3 in 2013 were also chronically infested with sea lice despite routine chemical treatment baths. P. salmonis was correlated with the increase in OF and chalimii. It was concluded that chemical baths to treat sea lice triggered fish mortality concomitantly with AGD due to prior gill damage. Fish stress conditions elicited by fish-gill disease, fish maturation and P. salmonis were related to an increase of ovigerous sea lice females. The decrease in recurrent and routine chemical baths allowed a reduction of sea lice reproduction and, most likely, of ISAV outbreaks. (C) 2016 Elsevier Ltd. All rights reserved.
机译：智利是世界上鲑鱼养殖最多产的国家之一，但由于鱼类疾病而遭受了巨大的经济损失。在这项研究中，确定了杯状ig虫病治疗剂罗格斯卡西（Calgus rogercresseyi）的处理方法与鲑鱼立克次氏体，传染性鲑鱼贫血病毒和新百草枯草引起的鲑鱼养殖主要疾病之间的相互作用。此信息对于在智利制定综合管理策略至关重要。鱼类的应激引起的免疫抑制被频繁的化学浴治疗，以治疗罗氏隐孢子虫（C. rogercresseyi）而增加，被认为是慢性腮腺炎和其他疾病高发的主要来源。使用PCR分析在所有采样农场中检测到鲑鱼假单胞菌和致病性ISAV，但仅在4月在一个农场中使用了百日咳猪笼草。 2011年，在农场1感染了非虱草猪g的非On虫的个体，并在1号农场接受化学浴。在未接受浴池处理的2号农场的Salmo撒拉族中也观察到了类似的患病率。两个农场都受到相似的海洋学影响。尽管没有采取任何治疗措施，但在2号农场中发现了80％的ISAV致病株，但没有临床症状，并伴有海虱很少，雌雄异体（OF）几乎完全消失。尽管在常规的化学处理浴中，2013年在3号农场采样的S. salar也被海虱长期感染。鲑鱼假单胞菌与OF和chalimii的增加相关。结论是，由于先前的g损坏，用于治疗海虱的化学浴与AGD一起触发了鱼的死亡。鱼-病，鱼成熟和鲑鱼假单胞菌引起的鱼应激状况与海虱雌性的增加有关。经常性和常规化学浴的减少使海虱繁殖减少，最有可能导致ISAV爆发。 （C）2016 Elsevier Ltd.保留所有权利。

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