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Lake Ontario salmon (Salmo salar) were not migratory: A long-standing historical debate solved through stable isotope analysis
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posted on 2020-08-12, 11:09 authored by EJ Guiry, S Needs-Howarth, KD Friedland, AL Hawkins, P Szpak, R Macdonald, M Courtemanche, E Holm, MP RichardsLake Ontario once supported a large complex of Atlantic Salmon (Salmo salar) populations that became extinct prior to scientific study. Since the 1860s, research efforts to conserve and reintroduce a sustainable population of Atlantic Salmon have focused on determining whether Lake Ontario's original salmon populations had migrated to the Atlantic Ocean as part of their lifecycle (anadromy), stayed in the lake year-round (potamodromy), or both. We used stable carbon, nitrogen, and sulfur isotope analyses of archaeological bones and historical museum-archived salmon scales to show that the original salmon populations from Lake Ontario completed their entire lifecycle without migrating to the Atlantic Ocean. With a time depth of more than 500 years, our findings provide a unique baseline with significant potential for informing modern restocking and conservation efforts.
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Guiry, E., Needs-Howarth, S., Friedland, K. et al. Lake Ontario salmon (Salmo salar) were not migratory: A long-standing historical debate solved through stable isotope analysis. Sci Rep 6, 36249 (2016). https://doi.org/10.1038/srep36249Version
- VoR (Version of Record)
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Scientific ReportsVolume
6Issue
1Pagination
36249Publisher
Nature Researchissn
2045-2322eissn
2045-2322Acceptance date
2016-10-12Copyright date
2016Available date
2020-08-12Publisher DOI
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EnglandLanguage
engPublisher version
https://www.nature.com/articles/srep36249Usage metrics
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