The distribution of crayfish (Decapoda: Astacidae, Cambaridae) population in Cris and Mures rivers crossing the Romanian-Hungarian border
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2013, Vol 6, Issue 1
Abstract
The crayfish (Decapoda) fauna of the Mures/Maros, Crisul Repede/Sebes-Körös, Crisul Negru/Fekete-Körös and Crisul Alb/Fehér-Körös rivers was surveyed in 16 sampling areas in 2012. The crayfish assemblages of the sampling areas were sampled using LiNi traps, hand collection and electric fishing. A total of 56 individuals of 3 crayfish species, two indigenous (Astacus astacus, Astacus leptodactylus) and one exotic (Orconectes limosus), were registered in the four rivers. The individuals of the spiny-cheek crayfish were caught in the Körösladány section of the Sebes-Körös river, making this site the easternmost border of the current Hungarian range of the species. The extremely rapid colonization in the Tisza watershed questions the hypothesis that the species has spread to the Tisza from the Danube. It was probably introduced into the eastern part of the country accidentally during fish stocking events or intentionally, as a live bait.
Authors and Affiliations
Károly Györe, Vilmos Józsa, Dénes Gál
Keywords
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