Abstract
The practice of artificial rearing of salmonids for stocking has been carried out for over 100 years, with the first commercial hatchery having been developed on the Rhine in 1852 (Harris, 1978). Hatcheries proliferated in the present century, fuelled by the belief that increases in the numbers of juveniles produced must result in increases in the abundance of adult stocks. Hatchery propagation was considered to be an improvement over the natural condition, where high juvenile mortalities were seen as wasteful of resources. Certainly hatchery techniques improved rapidly, and large numbers of juvenile salmonids became available for stocking. However, doubts about the efficiency of artificial propagation for increasing adult numbers began to grow, and various pieces of scientific evidence from the 1930s onwards confirmed that little benefit had accrued from the stocking practices then in vogue (e.g. Foerster, 1936, 1938; Hobbs, 1948).
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Kennedy, G.J.A. (1988). Stock Enhancement of Atlantic Salmon (Salmo Salar L.). In: Mills, D., Piggins, D. (eds) Atlantic Salmon. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1235-9_18
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