Differences in feeding between 1+ and 2+ hatchery brown trout exposed to low water temperature |
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| Authors: | J. Pirhonen,J. Koskela, M. Jobling,&dagger &dagger |
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| Affiliation: | Finnish Game and Fisheries Research Institute, Laukaa Fisheries Research and Aquaculture, FIN-41360 Valkola, Finland;Norwegian College of Fishery Science, University of Tromsø, N-9037 Tromsø, Norway |
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| Abstract: | Both 1 + and 2+ brown trout fed during the day and at night when held in hatchery tanks at low temperatures (2·7–3° C). Over 60% of the daily ration was consumed during daylight hours, but there were differences in feeding behaviour between fish of the two age groups: the 1 + trout had greater feeding activity at night than the 2+ fish. |
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| Keywords: | brown trout Salmo trutta feeding behaviour activity patterns |
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