Life‐history variation can contribute to the long‐term persistence of populations; however, it remains unclear which environmental factors drive life‐history variation within a population. Seasonally recurring resource subsidies are common in nature and may influence variations in recipient consumers' life‐history traits. In this study, we experimentally demonstrated that terrestrial invertebrate subsidies occurring early in t...

The Kanehira bitterling, Acheilognathus rhombeus , is a freshwater fish, discontinuously distributed in western Japan and the Korean Peninsula. Unusually among bitterling it is an autumn‐spawning species and shows developmental diapause. Consequently, the characterization of its evolutionary history is significant not only in the context of the fish assemblage of East Asia, but also for understanding life‐history evolution. Th...

We examined variations in age at seaward migration and sea age for the anadromous form of red‐spotted masu salmon ( Oncorhynchus masou ishikawae ) in two Japanese rivers. The anadromous form of red‐spotted masu salmon expressed only two sea migration patterns in the two rivers: (a) the majority of the salmon (95%, n = 81) were of age‐0, and age‐1 migrants were rare ( n = 4); and (b) all the salmon examined ( n = 22) made a ret...