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The diet of juvenile lake trout Salmo trutta L. in rivers of the Onega basin in autumn

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Abstract

The diet of juvenile trout and the state of their food resources in autumn (September–November) were studied in two typical small rivers tributary to Lake Onega (Karelia) in 2003. The relationship between the composition of food objects among benthic and drifting invertebrates and the food spectrum of trout was analyzed. The results show that before freeze-up, despite the disappearance of aerial and terrestrial insects, juveniles trout continue active feeding. However, their feeding priorities change: they begin to take food objects directly from the bottom, as well as from the water surface and within the water column.

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Authors and Affiliations

  1. Institute of Biology, Kola Research Center, Russian Academy of Sciences, ul. Pushkinskaya 11, Petrozavodsk, 185910, Russia

    Yu. A. Shustov, A. E. Veselov & I. A. Baryshev

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  1. Yu. A. Shustov
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  2. A. E. Veselov
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  3. I. A. Baryshev
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Correspondence to I. A. Baryshev.

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Original Russian Text © Yu.A. Shustov, A.E. Veselov, I.A. Baryshev, 2008, published in Ekologiya, 2008, No. 2, pp. 130–133.

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Shustov, Y.A., Veselov, A.E. & Baryshev, I.A. The diet of juvenile lake trout Salmo trutta L. in rivers of the Onega basin in autumn. Russ J Ecol 39, 119–122 (2008). https://doi.org/10.1134/S1067413608020070

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  • DOI: https://doi.org/10.1134/S1067413608020070

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