Patterns of Growth and Smolting of Atlantic Salmon ( Salmo salar ) Parr in a Southwestern Newfoundland River

A simple model of growth and smolting of Atlantic salmon (Salmo salar) parr, which can account for distributions of ages and lengths of random samples of sea-run smolts in Western Arm Brook, in northern Newfoundland, cannot account for distributions in Little Codroy River, in southwestern Newfoundla...

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Bibliographic Details
Published in:Canadian Journal of Fisheries and Aquatic Sciences
Main Authors: Evans, Geoffrey T., Rice, Jake C., Chadwick, E. Michael P.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1985
Subjects:
Aquatic Science
Ecology, Evolution, Behavior and Systematics
Western Arm
Western Arm Brook
Atlantic salmon
Newfoundland
Salmo salar
Online Access:http://dx.doi.org/10.1139/f85-071
http://www.nrcresearchpress.com/doi/pdf/10.1139/f85-071
Description
Summary:A simple model of growth and smolting of Atlantic salmon (Salmo salar) parr, which can account for distributions of ages and lengths of random samples of sea-run smolts in Western Arm Brook, in northern Newfoundland, cannot account for distributions in Little Codroy River, in southwestern Newfoundland. Possible reasons for discrepancies include mortality dependent on growth rates, non-Gaussian growth rate distributions, and variability in individual growth rates. Smolt data do not allow us to reject any of these possibilities. Precocious maturation of male parr does not account for the discrepancies.

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