Nederlands Soortenregister

Overzicht van de Nederlandse biodiversiteit

Californische rivierkreeft Pacifastacus leniusculus

Foto: Dick Belgers


Astacidae [familie]
Pacifastacus [genus] (1/0)

The signal crayfish was first recorded in the Netherlands in 2004. At present, two populations are known, one at the Oude Leij and related waters near Tilburg (province of Noord-Brabant) and one in the Ruhenbergerbeek and Dinkel near Enschede (province of Overijssel). Although the species is used for consumption in large quantaties in many countries, trade in signal crayfish seems very rare in the Netherlands, due to  popularity of Procambarus species.

There are no reports of ecological or economical or ecological damage of this species from the Netherlands yet. However, the local population of at least one fish species (the stone loach, Barbatula barbatula) declined considerably after the introcuction of the signal crayfish. Due to ecological similarities, the signal crayfish has a high probability to become established in the former niche of the native noble crayfish in the southern and eastern parts of the Netherlands. 



Koese, B.