The habitat use and selectivity by topmouth gudgeon (Pseudorasbora parva)

Balázs Csorbai, Ádám Pereszlényi, Róbert Kovács, Béla Urbányi, László Horváth

Research output: Contribution to journalArticle

Abstract

The topmouth gudgeon is an invasive species of the European fish fauna that causes problems not only as a competitor of native fishes in natural waters but also generates damages in pond fish farming. The behaviour of topmouth gudgeon has already been studied from a number of aspects, however, complex investigations on the habitat use of the species in invaded regions were not carried out yet. Here the habitat use of the fish in a close-tonature pond system was examined with special, non-selective minnow traps and observations were subsequently complemented by aquarium experiments. Our findings revealed that in a pond inhabited by predator fish, topmouth gudgeon preferred the pelagial region, while in a pond free of predator fish, they preferred the littoral zone. The examined abiotic parameters had no effect on the habitat use of the fish. In a simplified artificial environment experiments have yielded the same results. The findings showed that topmouth gudgeon is rather flexible in adapting to the environmental conditions, the available nutrition base, but from the aspect of habitat use the most significant factor is probably the presence of predatory fish. The results can establish an effective suppression method of topmouth gudgeon populations with predator fishes.

Original languageEnglish
Pages (from-to)389-400
Number of pages12
JournalActa Zoologica Academiae Scientiarum Hungaricae
Volume60
Issue number4
Publication statusPublished - Jan 1 2014

Keywords

  • Aquarium
  • Habitat use
  • Pond
  • Predator
  • Topmouth gudgeon

ASJC Scopus subject areas

  • Animal Science and Zoology

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