从北海到巴伦支海的萨尔莫·特鲁塔病的病理组

IF 3.4 2区 环境科学与生态学 Q2 ECOLOGY
Robert J. Lennox, Kristina M. Miller, Abdullah Madhun, Angela D. Schulze, Sindre Håvarstein Eldøy, Trond E. Isaksen, Rune Nilsen, Dylan Shea, Kim Birnie-Gauvin, Jan Grimsrud Davidsen, Steven J. Cooke, Knut Wiik Vollset
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引用次数: 0

摘要

就其病原菌群而言,鲑鱼是研究得最好的物种之一,在北部范围的极限,随着气候变化和北部养鱼业的增加,病原体有可能扩大。我们对挪威各地的海褐鳟鱼进行了鳃组织取样,并对总共47种病原体进行了集体和单独筛选。样本于2020年和2021年春季收集。主要分类群海褐鳟的细菌、病毒和寄生虫。方法作为国家海虱监测计划的一部分,对褐鳟进行鳃活检,并使用Fluidigm系统将样本送到实验室分析,该系统筛选了广泛的不同致病物种。结果多变量方差分析显示,鳟鱼病原菌丰富度与纬度的关系大于与养殖生物量的关系。然而,非度量多维尺度揭示了个体致病组与桡足动物阶段Lepeophtheirus salmonis虱子数量之间的显著关联,这确实揭示了挪威南部/中部与北部病原体分布的分离。重要的是,在挪威南部/中部,已知许多与海虱密切相关的病原体被携带,并可能通过海虱传播。在挪威北部,通常与鳟鱼感染和疾病相关的病原体更为常见。然而,考虑到大多数病原体是从挪威南部到北部检测到的,北方养殖场的进一步扩张似乎不太可能导致病原体进一步引入挪威北部地区,尽管它可能会扩大这些病原体在野生鲑鱼上的流行程度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The Pathobiome of Salmo trutta From the North Sea to the Barents Sea

The Pathobiome of Salmo trutta From the North Sea to the Barents Sea

Aim

Salmonids are some of the best studied species with respect to their pathobiome, and at the northern range limit, there is potential for pathogens to expand with both climate change and increased fish farming in the north.

Location

We sampled sea-run brown trout from throughout Norway for gill tissue and conducted both pooled and individual screenings for a total of 47 pathogens.

Time Period

Samples were collected during spring in 2020 and 2021.

Major Taxa

Bacteria, viruses and parasites of sea-run brown trout.

Methods

Brown trout were gill biopsied as part of the national sea lice monitoring programme and samples were sent for laboratory analysis using the Fluidigm system, which screened for a broad panel of different pathogenic species.

Results

Permutated multivariate analysis of variance revealed that the pathobiome richness of trout was more related to latitude than to fish farming biomass in the region where samples were taken. However, non-metric multidimensional scaling revealed a significant association between the individual pathobiome and the number of copepodid-stage Lepeophtheirus salmonis lice, which did reveal a south/central versus northern Norway segregation in pathogen distributions. Importantly, many pathogens positively associated with sea lice in southern/central Norway are known to be carried, and potentially transmitted by sea lice.

Main conclusions

In northern Norway, pathogens normally associated with infection and disease in trout were more commonly observed. However, given that most pathogens were detected from southern to northern Norway, it appears that further expansion of farms in the north are not likely to lead to further introductions of pathogens into northern areas of Norway, although it could amplify the prevalence of these pathogens on wild salmon.

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来源期刊
Journal of Biogeography
Journal of Biogeography 环境科学-生态学
CiteScore
7.70
自引率
5.10%
发文量
203
审稿时长
2.2 months
期刊介绍: Papers dealing with all aspects of spatial, ecological and historical biogeography are considered for publication in Journal of Biogeography. The mission of the journal is to contribute to the growth and societal relevance of the discipline of biogeography through its role in the dissemination of biogeographical research.
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