Übersetzte Kurzfassung:
In this work, prevalence and biodiversity of Listeria species in limnic habitats was examined. By comparing three different selective enrichment media for the isolation and enumeration of Listeria species from sediment and water plant matrices, no significant differences in terms of MPN titers and accumulation of species or RAPD subtypes were observed. During a one year longitudinal period, MPN titers and species compositions in sediment and on water plants from two creeks and one pond did not vary significantly during the seasons. The retrieved data provide evidence that Listeria spp. in sediment and on water plants are regular inhabitants of these natural habitats. Compared to the biodiversity of L. innocua and L. seeligeri , biodiversity of L. monocytogenes was lowest. In all habitats of the 3 tested sampling sites, novel Listeria were isolated. In this work, the species L. weihenstephanensis sp. nov. is described.