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首页> 外文期刊>Parasitology >Arctic charr (Salvelinus alpinus) is a suitable host for Gyrodactylus salaris (Monogenea, Gyrodactylidae) in Norway.
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Arctic charr (Salvelinus alpinus) is a suitable host for Gyrodactylus salaris (Monogenea, Gyrodactylidae) in Norway.

机译：北极红点鲑（Salvelinus alpinus）是挪威Gyrodactylus salaris（Monogenea，Gyrodactylidae）的合适寄主。

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摘要

Gyrodactylus specimens infecting both anadromous Arctic charr (Salvelinus alpinus) from River Signaldalselva (northern Norway) and resident Arctic charr from Lake Palsbufjorden (southern Norway) were identified as G. salaris using molecular markers and morphometrics. The infection in Palsbufjorden represents the first record of a viable G. salaris population infecting a host in the wild in the absence of salmon (Salmo salar). G. salaris on charr from Signaldalselva and Palsbufjorden bear different mitochondrial haplotypes. While parasites infecting charr in Signaldalselva carry the same mitochondrial haplotype as parasites from sympatric Atlantic salmon, G. salaris from charr in Palsbufjorden bear a haplotype that has previously been found in parasites infecting rainbow trout (Oncorhynchus mykiss) and Atlantic salmon, and an IGS repeat arrangement that is very similar to those observed earlier in parasites infecting rainbow trout. Accordingly, the infection may result from 2 subsequent host-switches (from salmon via rainbow trout to charr). Morphometric analyses revealed significant differences between G. salaris infecting charr in the 2 localities, and between those on sympatric charr and salmon within Signaldalselva. These differences may reflect adaptations to a new host species, different environmental conditions, and/or inherited differences between the G. salaris strains. The discovery of G. salaris on populations of both anadromous and resident charr may have severe implications for Atlantic salmon stock-management as charr may represent a reservoir for infection of salmon.
机译：使用分子标记和形态计量学，感染了Signaldalselva河（挪威北部）的异常北极红点鲑（Salvelinus alpinus）和来自帕尔斯比峡湾湖（挪威南部）的常驻北极红点菌的陀螺菌标本被鉴定为G. salaris。在Palsbufjorden的感染代表了有生存力的G. salaris种群在没有鲑鱼的情况下在野生环境中感染寄主的第一个记录（Salmo salar）。 Signaldalselva和Palsbufjorden的char。G. salaris具有不同的线粒体单倍型。虽然Signaldalselva中感染charr的寄生虫携带的线粒体单倍体与同胞大西洋鲑的寄生虫相同，但Palsbufjorden charr的g。salaris携带的单倍体以前在感染虹鳟鱼（Oncorhynchus mykiss）和大西洋鲑鱼的寄生虫中被发现，并且重复了IGS这种安排与先前在感染虹鳟鱼的寄生虫中观察到的安排非常相似。因此，感染可能是由随后的两次宿主切换（从鲑鱼通过虹鳟到鲑鱼）引起的。形态计量学分析显示，在两个地区，盐沼沙门氏菌感染鲑鱼之间以及Signaldalselva内同胞沙雷和鲑鱼之间存在显着差异。这些差异可能反映了对新宿主物种的适应，不同的环境条件和/或Sal.Garis菌株之间的遗传差异。在枯萎和常驻鲑鱼种群上发现的G. salaris可能会对大西洋鲑鱼的种群管理产生严重影响，因为鲑鱼可能代表鲑鱼的感染源。

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