BACKGROUND Long-term data from marked animals provide a wealth of opportunities for studies with high relevance to both basic ecological understanding and successful management in a changing world. The key strength of such data is that they allow us to quantify individual variation in vital rates (e.g. survival, growth, reproduction) and then link it mechanistically to dynamics at the population level. However, maintaining the collection of individual-based data over long time periods comes with large logistic efforts and costs and studies spanning over decades are therefore rare. This is the case particularly for migratory aquatic species, many of which are in decline despite their high ecological, cultural and economical value. NEW INFORMATION This paper describes two unique publicly available time series of individual-based data originating from a 51-year mark-recapture study of a land-locked population of large-sized migratory brown trout (Salmo trutta) in Norway: the Hunder trout. In the period 1966-2015, nearly 14,000 adult Hunder trout have been captured and individually marked during their spawning migration from Lake Mjøsa to the river Gubrandsdalslågen. Almost a third of those individuals were later recaptured alive during a later spawning run and/or captured by fishermen and reported dead or alive. This has resulted in the first data series: a mark-recapture-recovery dataset spanning half a century and more than 18,000 capture records. The second data series consists of additional data on juvenile and adult growth and life-history schedules from half of the marked individuals, obtained by means of scale-sample analysis. The two datasets offer a rare long-term perspective on individuals and population dynamics and provide unique opportunities to gain insights into questions surrounding management, conservation and restoration of migratory salmonid populations and freshwater ecosystems.

中文翻译：

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来自挪威 Mjøsa 湖的大型洄游褐鳟 (Salmo trutta) 的长期标记重新捕获和生长数据。

背景 来自标记动物的长期数据为与基本生态理解和不断变化的世界中的成功管理高度相关的研究提供了丰富的机会。此类数据的关键优势在于，它们使我们能够量化个体生命率的变化（例如生存、生长、繁殖），然后将其与人口水平的动态机制机械地联系起来。然而，长时间保持基于个人的数据收集需要大量的后勤工作和成本，因此跨越数十年的研究很少见。对于洄游水生物种来说尤其如此，尽管它们具有很高的生态、文化和经济价值，但其中许多正在衰退。新信息 本文描述了两个独特的公开可用的基于个体的时间序列数据，这些数据源自对挪威大型洄游褐鳟 (Salmo trutta) 的内陆种群进行的 51 年标记重新捕获研究：Hunder 鳟鱼。在 1966 年至 2015 年期间，近 14,000 条成年 Hunder 鳟鱼在从 Mjøsa 湖到 Gubrandsdalslågen 河的产卵迁移过程中被捕获并单独标记。这些个体中有近三分之一后来在后来的产卵过程中被重新捕获和/或被渔民捕获并报告死或活。这导致了第一个数据系列：一个跨越半个世纪的标记-重新捕获-恢复数据集和超过 18,000 条捕获记录。第二个数据系列包括通过规模样本分析获得的来自一半标记个体的青少年和成人生长和生活史时间表的附加数据。这两个数据集为个人和种群动态提供了难得的长期视角，并提供了独特的机会来深入了解有关洄游鲑鱼种群和淡水生态系统的管理、保护和恢复的问题。