Movements of brown trout Salmo trutta L. in a chalk stream |
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| Authors: | D. J. Solomon R. G. Templeton |
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| Affiliation: | Salmon and Freshwater Fisheries Laboratory, Ministry of Agriculture, Fisheries and Food, 10 Whitehall Place, London SW1, England;Directorate of Resource Planning, Southern Water Authority, Eastleigh House, Market Street, Eastleigh, Hants SOS 4FD |
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| Abstract: | Observations on spawning and movements of trout over 7.5 km of chalkstream indicate five discrete stages of the life history with respect to migrations. (1) Downstream movements from area of hatching to nursery areas, to 6 months of age. (2) Downstream again from the nursery areas to areas of adult growth between 6 months and 15 months of age. (3) A stage of very limited movements by adults between 15 months old and spawning. (4) Upstream spawning migration. (5) Downstream movements following spawning. These movements are similar in principle to those in upland systems though are relatively more local, reflecting the juxtaposition of areas suitable for all stages. |
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