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Relative production of Atlantic salmon from fluvial and lacustrine habitats estimated from analyses of scale characteristics
Author(s) -
Dempson J. B.,
O'Connell M. F.,
Shears M.
Publication year - 1996
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.1095-8649.1996.tb01431.x
Subject(s) - fluvial , habitat , biology , fishery , fish <actinopterygii> , ecology , scale (ratio) , life history , geography , cartography , structural basin , paleontology
Empirical and back‐calculated growth of Atlantic salmon parr were compared between fish reared in fluvial and lacustrine habitats of Conne River, Newfoundland. Length at age was significantly higher for lacustrine parr. Various classification and maximum likelihood estimators indicated that 75% or more of the fish used lakes for rearing. Lacustrine use is another aspect of the inherent variability and plasticity of Atlantic salmon life‐history traits. As most Newfoundland river systems include lakes, estimates of regional spawning targets and potential smolt production will need to take lake habitat into account.