Several studies have shown that the school type at release can significantly influence the amplitude of the movements of a tagged fish. In particular, it has been shown that seamounts can have a retention effect on tuna, suggesting that their migration patterns may differ significantly depending on the school type at release. However, many tuna releases near well-recognised mid-Atlantic seamounts have not been well coded in the ICCAT-AOTTP database. In addition, the 'Free School' type modality was often assigned to individuals tagged or recaptured near a seamount. This paper explored different criteria for identifying seamounts in the tagging database with the aim to correct the questionable coding of certain school types. To do this, we first investigated how to identify "attractive" seamounts based on their morphology and the distribution of catch data from the European purse seine fleet. This conceptual approach led to several problems discussed in this paper and from which we proposed a simple recoding method using the literature results. The correction criteria made it possible to correct the school type of 4.9% of several records of tagged tuna during the ICCAT AOTTP programme.

几项研究表明，放生时的鱼群类型可以显着影响标记鱼的运动幅度。特别是，已经表明海山可以对金枪鱼产生滞留效应，这表明它们的迁移模式可能因放生时的学校类型而有很大差异。然而，在公认的大西洋中部海山附近的许多金枪鱼释放并未在 ICCAT-AOTTP 数据库中得到很好的编码。此外，“免费学校”类型的模式通常分配给在海山附近被标记或重新捕获的个人。本文探讨了在标记数据库中识别海山的不同标准，旨在纠正某些学校类型的可疑编码。为此，我们首先研究了如何识别“有吸引力” 海山的形态和来自欧洲围网船队的渔获数据分布。这种概念方法导致了本文讨论的几个问题，我们从中提出了一种使用文献结果的简单重新编码方法。更正标准使得在 ICCAT AOTTP 计划期间更正几条标记金枪鱼记录中 4.9% 的学校类型成为可能。