Risk factors for escalating saprolegniosis outbreaks in salmon farms (RIFE-SOS)

鲑鱼养殖场水霉病爆发升级的危险因素 (RIFE-SOS)

基本信息

批准号：
BB/P020224/1
负责人：
Pieter Van West
金额：
$ 44.07万
依托单位：
University of Aberdeen
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=BB%2FP020224%2F1
关键词：
Risk factors escalating saprolegniosis outbreaks

项目摘要

Fish diseases are a huge threat for the aquaculture industry and for global food security. Some of the most important disease-causing organisms in aquaculture are part of the oomycetes or watermoulds, in particular Saprolegnia parasitica, Saprolegnia diclina and Saprolegnia australis are causing serious fish losses. Collectively, these fungal-like organisms are responsible for at least 10% annual mortalities in most salmon hatcheries and freshwater sites. Consequently, Saprolegnia ranks among the most important pathogens of Atlantic salmon.Unfortunately, over the last few years the incidences of saprolegniosis outbreaks in Scottish farms have significantly increased. Indeed, some sites have had very high losses due to saprolegniosis. Whereas other farms have remained largely disease free. The reasons as to why some farms are badly affected and others seem to avoid disease outbreaks, with apparent identical welfare standards and husbandry management practises, are at present completely unclear and form the main rational for the current application.Our hypothesis is that several risk factors (pertaining to fish, pathogens and the environment) are playing a synergistic role in suppressing immunity in fish towards Saprolegnia, which lead to outbreaks of saprolegniosis. Therefore, we propose a concerted industry-wide, industry-led and industry-supported research programme to discover, map, model and understand the main drivers, risk factors, that allow saprolegniosis outbreaks. A "big data" resource will be created that will be scrutinised with statistical methods to identify the main risk factors and conditions for outbreaks of saprolegniosis. Undoubtedly, identifying the main, or a combination of, risk factors will greatly aid the salmon aquaculture industry to pre-empt any future outbreaks and would lead to an integrated approach to saprolegniosis management, which would result in increased welfare standards, improved fish health, fewer losses and a reduction in production and treatment costs.

鱼类疾病对水产养殖业和全球粮食安全是巨大的威胁。水产养殖中一些最重要的引起疾病的生物是卵菌或水甲的一部分，尤其是saprolegnia寄生虫，saprolegnia diclina和saprolegnia australis正在造成严重的鱼类流失。总的来说，这些真菌样生物在大多数鲑鱼孵化场和淡水地点中至少造成至少10％的年死亡。因此，萨普洛尼亚（Saprolegnia）是大西洋鲑鱼最重要的病原体之一。实际上，由于腐生性，某些地点损失很高。而其他农场基本上仍然没有疾病。 The reasons as to why some farms are badly affected and others seem to avoid disease outbreaks, with apparent identical welfare standards and husbandry management practises, are at present completely unclear and form the main rational for the current application.Our hypothesis is that several risk factors (pertaining to fish, pathogens and the environment) are playing a synergistic role in suppressing immunity in fish towards Saprolegnia, which lead to outbreaks of腐生。因此，我们提出了一个跨越行业，行业主导和行业支持的研究计划，以发现，绘制，建模和理解主要驱动因素，风险因素，以允许腐烂性暴发。将创建一个“大数据”资源，并将使用统计方法进行审查，以识别腐生爆发的主要风险因素和条件。毫无疑问，确定危险因素的主要或组合将极大地有助于鲑鱼水产养殖行业预先抢发任何未来的爆发，并导致对腐生性管理的综合方法，从而提高福利标准，改善鱼类健康，更少的损失，生产和治疗成本的损失和减少。