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Movements of brown trout, Salmo trutta L., in the River Gwyddon, South Wales
Author(s) -
Harcup M. F.,
Williams R.,
Ellis D. M.
Publication year - 1984
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1984.tb04812.x
Subject(s) - brown trout , salmo , biology , stocking , hatchery , trout , fishery , fish <actinopterygii> , population , zoology , demography , sociology
Movements of native brown trout, Salmo trutta , 1 + and older, were limited with up to 93% of recaptured marked fish occupying sites where previously caught. Movements > 50 m were rare with the majority < 15 m. Between sampling occasions, the population could be separated into a static component and a smaller mobile component but there was no evidence of a permanently mobile group. The proportion of mobile native fish increased after stocking with hatchery‐reared trout. Displaced native trout (1 + and older) showed the ability to home from 75 m upstream to 111 m downstream of a release site.