Habitat use and growth strategies of amphidromous fish “ayu” throughout a river system

Abstract Adult spawners are key contributors to fish population dynamics, and thus understanding their life history is essential for effective population management and conservation. The radiogenic Sr isotope ratios (87Sr/86Sr) and ring numbers of adult spawners’ sagitta otoliths were measured to de...

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Bibliographic Details
Main Authors: Shigeya Nagayama, Tamihisa Ohta, Ryouji Fujii, Morihiro Harada, Tsuyoshi Iizuka
Format: Article
Language:English
Published: Nature Portfolio 2025-05-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-02988-8
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