Parr dispersal between streams via a marine environment: A novel mechanism behind straying for anadromous brown trout? |
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| Authors: | Imre Taal Mehis Rohtla Lauri Saks Martin Kesler Kristiina Jürgens Roland Svirgsden Lagle Matetski Aare Verliin Päärn Paiste Markus Vetemaa |
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| Affiliation: | 1. Estonian Marine Institute, University of Tartu, Tartu, Estonia;2. Department of Geology, University of Tartu, Tartu, Estonia |
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| Abstract: | Otolith Sr:Ca profiles demonstrated that juvenile anadromous brown trout (ABT) Salmo trutta may descend to the brackish waters of the Baltic Sea from their natal streams as parr or fry and then migrate into non‐natal streams before transforming into smolt. To our knowledge, no such published documentation exists for ABT. The ecological significance of this life‐history strategy is presently not clear. However, stream shifting through the marine environment should to be considered with regard to stock management and the assessment and restoration of salmonid populations and their potential habitats. |
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| Keywords: | life history otolith microchemistry parr migration salmonids |
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