There are often stark differences in our understanding, hence management, of anadromous and migratory freshwater fishes. Many of these migrators are compelled to navigate among distinct rearing, feeding, and spawning habitats, yet now require artificial propagation to maintain populations in compromised waterbodies. Besides migratory behavior and population declines, these fishes share olfactory physiology—whether semelparous or iteroparous (Hasler 1966).

中文翻译：

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嗅觉激活：作为保护非鲑鱼洄游鱼类的新兴前沿的印记

我们对溯河和洄游淡水鱼的理解和管理常常存在明显差异。许多这些迁徙者被迫在不同的饲养、觅食和产卵栖息地之间导航，但现在需要人工繁殖以维持受损水体中的种群。除了洄游行为和种群数量下降之外，这些鱼还有共同的嗅觉生理——无论是半产还是单产（Hasler 1966）。