Original scientific paper

FOOD COMPOSITION OF GRAYLING Thymallus thymallus L., FROM THE RIVER KRUŠNICA

Azra Bećiraj Bakrač ; Biotehnycal faculty, University of Bihać
Aleksandar Ivanc ; Faculty of Science, University of Banja Luka, Mladena Stojanovića 2, 78 000 Banja luka
Marina Piria ; Faculty of Agriculture, University of Zagreb, Svetosimunska 25, Zagreb
Radoslav Dekić ; Faculty of Science, University of Banja Luka, Mladena Stojanovića 2, 78 000 Banja luka

Abstract

Total of 118 specimens of grayling (Thymallus thymallus) is caught with sport fishing techniques in the river Krušnica. The objectives of this research was to obtain data about the diet composition of these species in natural biotopes.
Dominant food of grayling from the river Krušnica were Amphipoda and Ephemeroptera, while the most abundant number belonging to the group of Diptera. Secondary diet consists of Trichoptera with Hydropsyche sp. as dominant species, then Gastropoda with Valvata sp., Coleoptera and Formicidae.
Grayling occasionally consume Isopoda, Hirudinea, Plecoptera, Oligochaeta, Heteroptera, Aranea, Lepidoptera, Hydracarina and Hymenoptera, as well as plant detritus.

Keywords

grayling; Thymallus; Krušnica; natural nutrition

Hrčak ID:

30533

URI

https://hrcak.srce.hr/30533

Publication date:

1.10.2008.

Article data in other languages: croatian

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