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首页> 外文期刊>Estuarine Coastal and Shelf Science >Definition of sanitary boundaries to prevent ISAv spread between salmon farms in southern Chile based on numerical simulations of currents
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Definition of sanitary boundaries to prevent ISAv spread between salmon farms in southern Chile based on numerical simulations of currents

机译：根据水流的数值模拟，确定防止ISAv在智利南部鲑鱼养殖场之间传播的卫生界限

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摘要

The infectious Salmon Anemia virus (ISAv) is a pathogen that mainly affects the Atlantic Salmon (Salmo salar). It was detected in Norway in 1984 and in June 2007 appeared in Chile, producing a drop of more than 30% in the country's production level. It is expected that with certain regularity, outbreaks will continue to appear in Chile without the need of reintroducing the virus from foreign countries. We present a numerical study of the influence of winds and tides in the dispersion of lagrangian particles to simulate the transport of ISAv in the Aysen region, in southern Chile. This study combines the use of numerical models of the ocean and atmosphere, lagrangian tracking and biological aspects of ISAv infections. As in previous results, a wider dispersion of ISAv was observed during spring tides. Temporal changes in wind significantly modified the transport of viral particles from an infected center. Under similar forcing conditions, the areas of risk associated to culture sites separated by a few kilometers could be very different. Our main results remark the importance of the use of a detailed knowledge of hydrographic and atmospheric circulation in the definition of boundaries for sanitary management areas. We suggest that a methodology similar to the one presented in this study should be considered to define sanitary strategies to minimize the occurrence of native outbreaks of ISAv. (C) 2015 Elsevier Ltd. All rights reserved.
机译：传染性鲑鱼贫血病毒（ISAv）是主要影响大西洋鲑鱼（Salmo salar）的病原体。它于1984年在挪威被发现，2007年6月在智利出现，使该国的生产水平下降了30％以上。预计在一定的规律下，智利将继续出现暴发，而无需从国外重新引入该病毒。我们对拉格朗日粒子的分散中风和潮汐的影响进行了数值研究，以模拟ISAv在智利南部艾森地区的运输。这项研究结合了海洋和大气层数值模型的使用，拉格朗日跟踪和ISAv感染的生物学方面。与以前的结果一样，在春季潮汐期间观测到了ISAv的更广泛分散。风的时间变化极大地改变了病毒从受感染中心的转运。在相似的强迫条件下，相距几公里的文化场所相关的风险区域可能会非常不同。我们的主要结果表明，在确定卫生管理区域的边界时，必须使用详细的水文和大气环流知识。我们建议应考虑采用一种与本研究相似的方法来定义卫生策略，以最大程度地减少ISAv的自然爆发。 （C）2015 Elsevier Ltd.保留所有权利。

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