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FOOD COMPOSITION OF GRAYLING Thymallus thymallus L., FROM THE RIVER KRUŠNICA
Azra Bećiraj Bakrač
; Biotehnički fakultet, Univerzitet u Bihaću, Kulina bana 2, 77 000 Bihać
Aleksandar Ivanc
; Prirodno–matematički fakultet, Mladena Stojanovića 2, Univerzitet u Banjoj Luci, 78 000 Banja Luka
Marina Piria
; Agronomski fakultet, Sveučilišta u Zagrebu, Svetošimunska 25, Zagreb
Radoslav Dekić
; Prirodno–matematički fakultet, Mladena Stojanovića 2, Univerzitet u Banjoj Luci, 78 000 Banja Luka
Sažetak
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.
Ključne riječi
grayling; Thymallus; Krušnica; natural nutrition
Hrčak ID:
30533
URI
Datum izdavanja:
1.10.2008.
Posjeta: 2.121 *