Stunted growth of pikeperch Sander lucioperca in Lake Sahajärvi, Finland
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.
Document Type: Research Article
Affiliations: Department of Biological and Environmental Sciences/Aquatic Sciences, P. O. Box 65, FIN-00014, University of Helsinki, Finland
Publication date: 2009-03-01