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- W2024188719 endingPage "2180" @default.
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- W2024188719 abstract "Anadromous Atlantic salmon (Salmo salar) were collected during their spawning migration along the Exploits River, Newfoundland, in 1996 and analyzed for stable-isotope ratios (δ 13 C and δ 15 N) and tissue concentrations of protein and lipid. Fish became progressively more 13 C enriched during the spawning migration (about -24 to -19), and the degree of enrichment was dependent on tissue type (red muscle: +4.1, liver: +2.6, white muscle: +1.3). Only liver showed consistent changes in δ 15 N, as overwintering kelts (13.5 ± 0.8) were about +2 more enriched than upstream migrants (11.4 ± 1.5). Isotopic enrichment in migrating salmon appeared to result from mobilization, reorganization, and catabolism of stored lipid and protein reserves associated with the cessation of feeding upon entering freshwater. The most significant correlations existed between lipid content and δ 13 C in red muscle (r 2 = 0.67) and protein content and δ 15 N in liver (r 2 = 0.32). This study shows that fasting affects the stable-isotope ratios of both carbon and nitrogen in anadromous fishes and that nutritional status should be considered when inferring food web relationships from the isotopic compositions of migrating salmonids." @default.
- W2024188719 created "2016-06-24" @default.
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- W2024188719 date "1999-11-01" @default.
- W2024188719 modified "2023-10-17" @default.
- W2024188719 title "Effects of the spawning migration on the nutritional status of anadromous Atlantic salmon (<i>Salmo salar</i>): insights from stable-isotope analysis" @default.
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- W2024188719 doi "https://doi.org/10.1139/f99-147" @default.
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