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Parr dispersal between streams via a marine environment: A novel mechanism behind straying for anadromous brown trout?
Author(s) -
Taal Imre,
Rohtla Mehis,
Saks Lauri,
Kesler Martin,
Jürgens Kristiina,
Svirgsden Roland,
Matetski Lagle,
Verliin Aare,
Paiste Päärn,
Vetemaa Markus
Publication year - 2018
Publication title -
ecology of freshwater fish
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 55
eISSN - 1600-0633
pISSN - 0906-6691
DOI - 10.1111/eff.12338
Subject(s) - fish migration , brown trout , salmo , streams , biological dispersal , fishery , habitat , ecology , estuary , juvenile , trout , biology , fish <actinopterygii> , computer network , population , demography , sociology , computer science
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.