Abstract Carotenoids of the land-locked type (Amago) and sea-run type (Satsukimasu) of masu salmon Oncorhynchus masou ishikawae inhabiting the Nagara River, Gifu Prefecture, Japan were investigated from the perspective of the chemical ecological point of view. Yellow xanthophylls, 3′-epilutein, lutein, zeaxanthin, and diatoxanthin were major carotenoids in wild Amago. They were also present in the flesh of wild Amago. These carotenoids originated from aquatic insects, which wild Amago fed on. On the other hand, tunaxanthin, zeaxanthin, and salmoxanthin were major carotenoids in the integument of Satsukimasu, which migrated from the Ise Bay to the Nagara River. Astaxanthin was a major carotenoid in the flesh of Satsukimasu. These carotenoids accumulated from marine fish and crustaceans, which Satsukimasu fed on during migration in the sea. Carotenoids of Amago and Satukimasu well-reflect their ecological life history.

中文翻译：

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基于化学生态学研究的日本长良川内陆和海流型马苏鲑 Oncorhynchus masou ishikawae 的类胡萝卜素

摘要 从化学生态学的角度研究了生活在日本岐阜县长良川的 masu 鲑鱼 Oncorhynchus masou ishikawae 的内陆型 (Amago) 和海流型 (Satsukimasu) 类胡萝卜素。黄色叶黄素、3'-上皮叶黄素、叶黄素、玉米黄质和硅藻黄质是野生 Amago 中的主要类胡萝卜素。它们也存在于野生 Amago 的肉中。这些类胡萝卜素来源于水生昆虫，野生海鱼以它们为食。另一方面，从伊势湾迁移到长良川的小月的外皮中，金枪鱼黄质、玉米黄质和鲑鱼黄质是主要的类胡萝卜素。虾青素是 Satsukimasu 果肉中的主要类胡萝卜素。这些类胡萝卜素是从海鱼和甲壳类动物中积累起来的，Satsukimasu 在海中迁徙时以它们为食。