Rapid, efficient growth reduces mercury concentrations in stream-dwelling Atlantic salmonAuthor(s): Darren M. Ward; Keith H. Nislow; Celia Y. Chen; Carol L. Folt
Source: Transactions of the American Fisheries Society. 139: 1-10.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
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Mercury (Hg) is a potent toxin that biomagnifies in aquatic food webs. Large fish generally have higher Hg concentrations than small fish of the same species. However, models predict that fish that grow large faster will have lower Hg concentrations than small, slow-growing fish owing to somatic growth dilution (SGD). We examined the relationship between Hg concentration and growth rate in fish by means of a large-scale field experiment. Atlantic salmon Salmo salar fry hatched under uniform initial conditions were released at 18 sites in natural streams, collected after one growing season, and measured with respect to Hg concentration and growth.
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CitationWard, Darren M.; Nislow, Keith H.; Chen, Celia Y.; Folt, Carol L. 2010. Rapid, efficient growth reduces mercury concentrations in stream-dwelling Atlantic salmon
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