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Migrating silver eels return from the sea to the river of origin after a false start

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dc.contributor.authorTambets, Meelis
dc.contributor.authorKärgenberg, Einar
dc.contributor.authorJärvalt, Ain
dc.contributor.authorØkland, Finn
dc.contributor.authorKristensen, Martin Lykke
dc.contributor.authorKoed, Anders
dc.contributor.authorBernotas, Priit
dc.contributor.departmentChair of Hydrobiology and Fisheryeng
dc.date.accessioned2023-03-22T10:17:24Z
dc.date.available2023-03-22T10:17:24Z
dc.date.issued2021
dc.description.abstractThe European eel’s singular spawning migration from European waters towards the Sargasso Sea remains elusive, including the early phase of migration at sea. During spawning migration, the movement of freshwater resident eels from river to sea has been thought to be irreversible. We report the first recorded incidents of eels returning to the river of origin after spending up to a year in the marine environment. After migrating to the Baltic Sea, 21% of the silver eels, tagged with acoustic transmitters, returned to the Narva River. Half returned 11–12 months after moving to the sea, with 15 km being the long- est upstream movement. The returned eels spent up to 33 days in the river and migrated to the sea again. The fastest specimen migrated to the outlet of the Baltic Sea in 68 days after the second start—roughly 1300 km. The surprising occurrence of returning migrants has implications for sustainable management and protection of this critically endangered species.eng
dc.description.abstractThis study was financed by European Fisheries and Maritime Fund project L180152PKKH and Estonia-Russia Cross Border Cooperation Programme 2014-2020 project ER80.eng
dc.description.sponsorshipThis study was financed by European Fisheries and Maritime Fund project L180152PKKH and Estonia-Russia Cross Border Cooperation Programme 2014-2020 project ER80.eng
dc.identifier.issn1744-957X
dc.identifier.publicationBiology Letters, 2021, 17, 20210346.eng
dc.identifier.urihttp://hdl.handle.net/10492/8007
dc.identifier.urihttps://dx.doi.org/10.1098/rsbl.2021.0346
dc.publisherThe Royal Societyeng
dc.rights© 2021 The Author(s). Published by the Royal Society. All rights reserved.eng
dc.subjectbehavioural diversityeng
dc.subjectconservation strategyeng
dc.subjectEuropean eeleng
dc.subjectmanagementeng
dc.subjectspawning migrationeng
dc.subjecttelemetryeng
dc.subjectarticleseng
dc.titleMigrating silver eels return from the sea to the river of origin after a false starteng
dc.typeArticleeng

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