One Year Monitoring of Ecological Interaction of Silurus glanis in a Novel Invaded Oligotrophic Deep Lake (Lake Maggiore)

The European catfish (Silurus glanis) was introduced in Italy during the last century for aquaculture purposes, and now it is well-established. S. glanis an invasive species a top predator that can deplete prey supply surrounding habitat, leading to changes aquatic food web. Consequently, its presence considered threat native fish populations. Its Lake Maggiore (Northern Italy) recent there lack of knowledge about ability completely exploit this new ecosystem throughout year. This study corroborated both pelagic littoral habitats, promoting trophic interactions habitats. Over 2019, multiple sampling approaches have been applied by collecting analysing stomach contents with aim inferring freshwater community. diet mainly based on crayfish (Orconectes limosus), followed six genus Corbicula; two (Padogobius bonelli Salaria fluviatilis) were added list known fish. Notably alarmingly early potential top-down pressure towards all levels, young individuals proved also feed crayfish. showed hunt at deep depths (>60 m) high growth rate, despite being oligotrophic.