Vol. 14,No. 4, October 2015
Analysis of diet of piscivorous fishes in Bovan, Gruža and Šumarice reservoir, Serbia
Description:1-University of Kragujevac, Faculty of Science, Institute of Biology and Ecology, Radoja Domanovića 12, 34000 Kragujevac, Serbia. 2-University of Belgrade, Faculty of Biology, Institute of Zoology, Studentski trg 16, 11000 Belgrade, Serbia. 3-University of Niš, Faculty of Science and Mathematics, Department of Biology and Ecology, Višegradska 33, 18000 Niš, Serbia. *Corresponding author’s email: simic@kg.ac.rs
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Abstract
Diet of adult pikeperch Sander lucioperca, Eurasian perch Perca fluviatilis, northern pike Esox lucius and European catfish Silurus glanis as top predators in aquatic ecosystems in Serbia was investigated during 2011, in order to understand their relationship to their prey and to investigate their food consumption, feeding and assimilation rate, cannibalism, and habitat segregation. Northern pike, Eurasian perch, pikeperch and European catfish were collected in three reservoirs in Serbia. Prey items that were found in all four species included fish, mollusks, insect larvae and crustaceans. A total of 11 taxonomic groups were found, but they were not all represented as a prey in all four species. Eurasian perch were present in the diet of all four predatory fish species, mollusks were recorder only in that of European catfish. Roach Rutilus rutilus and bleak Alburnus alburnus were prey to all species, except northern pike. Chub Squalius cephalus, bream Brama brama and Gammaridae were found only in stomach of pikeperch. Analysis of similarity showed that difference for diet between predatory fish species was significant for their due to significant differences existing between northern pike and pikeperch and northern pike and Eurasian perch.
Keywords: Predation, Freshwater fish, Diet, Reservoirs, Stomach content
Author:Pavlović M.1; Simonović P.2; Stojković M.3; Simić V.1*
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