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Feeding ecology of the invasive Amur sleeper ( Perccottus glenii Dybowski, 1877) in Central Europe
Author(s) -
Kati Sára,
Mozsár Attila,
Árva Diána,
Cozma Nastasia J.,
Czeglédi István,
Antal László,
Nagy Sándor A.,
Erős Tibor
Publication year - 2015
Publication title -
international review of hydrobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 1434-2944
DOI - 10.1002/iroh.201401784
Subject(s) - biology , ecology , habitat , invertebrate , river ecosystem , predation , larva , predator
In the last two decades, the invasion of the Amur sleeper ( Perccottus glenii Dybowski, 1877) originating from the Far East can be observed in Eastern and Central Europe. Since the Amur sleeper is a non‐game fish species, few detailed studies exist on its feeding ecology both in its native and invaded habitats. We examined the seasonal feeding ecology of Amur sleeper in a lentic and in a lotic habitat. Chironomid larvae, zygpoteran larvae, crustaceans, and ephemeropteran larvae dominated the diet. No clear differences between the two habitats were found. The diet composition was mainly regulated by the body size that had stronger effect than the habitat and the season. Although fish consumption was uncommon, we anticipate this finding to the structure of the examined populations, in which large bodied individuals were rare. Our study shows that the Amur sleeper may influence several levels (compartments) of the aquatic food web, although the species proved to be an especially important predator of the invertebrate assemblage.