The salmon louse (Lepeophtheirus salmonis) is an ecologically and economically important parasite of salmonid fish. Temperature is a strong influencer of biological processes in salmon lice, with development rate increased at higher temperatures. The successful attachment of lice onto a host is also predicted to be influenced by temperature; however, the correlation of temperature with parasite survival is unknown. This study describes the effects of temperature on infection success, and survival on the host during development to the adult stage. To accurately describe infection dynamics with varying temperatures, infection success was recorded on Atlantic salmon (Salmo salar) between 2 and 10°C. Infection success ranged from 20% to 50% and was strongly correlated with temperature, with the highest success at 10°C. Parasite loss was monitored during development at eight temperatures with high loss of lice at 3 and 24°C, whilst no loss was recorded in the temperature range from 6 to 21°C. Sea temperatures thus have large effects on the outcome of salmon louse infections and should be taken into account in the management and risk assessment of this parasite. Improving understanding of the infection dynamics of salmon lice will facilitate epidemiological modelling efforts and efficiency of pest management strategies.

中文翻译：

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温度对鲑鱼Leophophtheirus感染并在大西洋鲑鱼上持续存在的能力的影响。

鲑鱼虱（Lepeophtheirus鲑鱼）是鲑鱼的一种在生态和经济上重要的寄生虫。温度是鲑鱼虱子生物学过程的重要影响因素，在较高温度下发育速度会加快。预计虱子成功附着在宿主上也会受到温度的影响。然而，温度与寄生虫生存的相关性尚不清楚。这项研究描述了温度对感染成功的影响以及在发育到成年阶段宿主的存活率。为了准确描述不同温度下的感染动态，在大西洋鲑鱼（Salmo salar）上记录了感染成功）在2至10°C之间。感染成功率在20％至50％之间，并且与温度密切相关，在10°C时感染率最高。在8个温度下的发育过程中监测了寄生虫的损失，在3和24°C下虱子的损失很高，而在6至21°C的温度范围内没有记录到损失。因此，海水温度对鲑鱼虱感染的影响很大，因此在管理和评估该寄生虫的风险时应予以考虑。增进对鲑鱼虱子感染动态的了解将有助于流行病学建模工作和有害生物管理策略的效率。