Disjunct distribution pattern of Procambarus clarkii (Crustacea, Decapoda, Astacida, Cambaridae) in an artificial lake system in Southwestern Germany
2011; Regional Euro-Asian Biological Invasions Centre (REABIC); Volume: 6; Issue: 1 Linguagem: Inglês
10.3391/ai.2011.6.1.14
ISSN1798-6540
Autores Tópico(s)Aquatic Invertebrate Ecology and Behavior
ResumoProcambarus clarkii is among the worst invasive species that have invaded Europe. It originates from the central south of the USA and northeastern Mexico and is a hardy, r-selected generalist. There exists a marked gradient in population numbers from southwestern to northeastern Europe: The Iberian Peninsula, Italy and France have the bulk of the populations, while northeastern populations are mainly scattered and isolated from each other. In the present study I report on the distribution of P. clarkii in an artificial lake system along the River Danube in Southwestern Germany, which is within its northeastern range limit. The presence of P. clarkii was confirmed in nine lakes and one canal with stagnant water. Procambarus clarkii was absent from lotic situations, which may indicate that P. clarkii thrives chiefly in stagnant or slow flowing waters. A probable explanation is that those habitats
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