Original title: Hlaváčovité ryby - potravní konkurenti našich původních druhů ryb?
Translated title: Gobiidae - food competitors for our native fish species?
Authors: Všetičková, Lucie ; Jurajda, Pavel ; Vašek, Mojmír ; Adámek, Zdeněk ; Roche, Kevin
Document type: Papers
Conference/Event: 65 let výuky rybářství na Mendelově univerzitě v Brně, Brno (CZ), 2014-12-02 / 2014-12-03
Year: 2014
Language: cze
Abstract: To date, two species of the non-native Gobiidae family have been recorded in the Czech Republic: the tubenose goby (Proterorhinus semilunaris) and round goby (Neogobius melanostomus). The aim of this study was to assess the dietary habits of these two species, with the relationship between goby diet and that of native species (potential competition, predation) of particular interest. Early results suggest that the main dietary items of both gobiids are common benthic invertebrates such as Chironomidae, Trichoptera and Ephemeroptera. Fish eggs and fry were rarely taken by either species and, when taken, consisted almost exclusively of eggs and fry of their own species (cannibalism). In addition, the round goby was shown to be necrophagous, scavenging on large fish carcasses. This behaviour si relatively rare in the Czech fish assemblage. Our results suggest that tubenose and round goby, while not predating heavily on native benthivorous species, may still represent possible competitors.
Keywords: Czech Republic; round goby; tubenose goby
Project no.: GAP505/11/1768 (CEP)
Funding provider: GA ČR
Host item entry: 65 let výuky rybářství na Mendelově univerzitě v Brně, ISBN 978-80-7509-153-6

Institution: Institute of Vertebrate Biology AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0242651

Permalink: http://www.nusl.cz/ntk/nusl-180506


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Conference materials > Papers