Rapid range expansion of the “whitefin” gudgeon Romanogobio cf. belingi (Teleostei: Cyprinidae) in a lowland tributary of the Vistula River (Southeastern Poland)
1 Department of Ichthyobiology and Fisheries, University of Agriculture in Kraków, Spiczakowa 6, 30-198 Kraków, Poland
2 Department of Fish Ecology, Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, v.v.i., Květná 8, 603 65 Brno, Czech Republic
Received: 4 April 2013
Accepted: 27 August 2013
The “whitefin” gudgeon Romanogobio cf. belingi was recorded in the Nida River, a large lowland tributary of the upper Vistula (Southeastern Poland), for the first time in 2009. Since then, it has been caught during the periodical (three times per year) monitoring only sporadically. Conversely, in October and November 2012 R. cf. belingi was recorded frequently along an ∼60-km lowermost stretch of the Nida River. The abundance of this fish gradually increased downstream. This paper provides details of that phenomenon and discusses it in the context of the currently known distribution of this species.
Key words: Faunistic / Gobioninae / ichthyofauna monitoring / population dynamics / rare species
© EDP Sciences, 2013