The Fraser River in British Columbia, Canada, historically supported productive Indigenous, recreational, and commercial fisheries for Eulachon Thaleichthys pacificus. Although Eulachon spend most of their lives in the marine environment, they spawn in freshwater and it is hypothesized that habitat degradation in the Fraser River has contributed to population decline. A greater understanding of Eulachon life history strategies is necessary to develop species recovery strategies. The purpose of this study was to provide insight into population demographics, migration timing, residence time, travel speed and distance, and movement patterns of Eulachon traveling in the Fraser River by conducting index netting and acoustic telemetry.

中文翻译：

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通过声学遥测揭示弗雷泽河下游的真鱼迁徙模式

加拿大不列颠哥伦比亚省的弗雷泽河历来支持太平洋真鱼的本土、休闲和商业渔业的生产。尽管Eulachon的大部分生命都在海洋环境中度过，但它们在淡水中产卵，并且假设弗雷泽河的栖息地退化导致了种群数量的下降。为了制定物种恢复策略，有必要更好地了解 Eulachon 的生活史策略。本研究的目的是通过进行指数网和声学遥测，深入了解弗雷泽河中尤拉雄的人口统计、迁徙时间、停留时间、行进速度和距离以及运动模式。