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Stunted growth of pikeperch Sander lucioperca in Lake Sahajärvi, Finland

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Abstract:

Growth of pikeperch Sander lucioperca in the eutrophic and clay-turbid Lake Sahajärvi, Southern Finland, was extremely slow in comparison with other lakes at similar latitudes. The most important food item in July was phantom midge larvae Chaoborus flavicans for all sizes of S. lucioperca (239–423 mm total length LT), while later, in August and September, the diet of S. lucioperca (149–407 mm LT) consisted of small (30–100 mm LT) perch Perca fluviatilis, ruffe Gymnocephalus cernuus and roach Rutilus rutilus.

Keywords: Sander lucioperca; food composition; stunted growth

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1095-8649.2009.02181.x

Affiliations: Department of Biological and Environmental Sciences/Aquatic Sciences, P. O. Box 65, FIN-00014, University of Helsinki, Finland

Publication date: March 1, 2009

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