Growth of pikeperch in relation to lake characteristics: total phosphorus, water colour, lake area and depth

Authors

  • T. Keskinen,

    Corresponding author
    1. Department of Biological and Environmental Sciences, University of Jyväskylä, P. O. Box 35, FIN-40014 Jyväskylä, Finland
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  • T. J. Marjomäki

    1. Department of Biological and Environmental Sciences, University of Jyväskylä, P. O. Box 35, FIN-40014 Jyväskylä, Finland
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*Tel.: +358 142 602 338; fax: +358 142 602 321; email: tkeskin@cc.jyu.fi

Abstract

The growth of pikeperch Sander lucioperca was studied in 41 lakes in central Finland. The backcalculated average total length of 3 year-old pikeperch was used as an indicator of growth. The growth correlated positively with total phosphorus and water colour and negatively with lake area and depth. The reason for differences in growth may be differences in the amount of suitable food, foraging success or temperature dynamics in different lakes.

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