EN
In Poland 30 species of invasive mollusks were found; 11 of aquatic snails, 9 of land snails and 10 of land slugs. The most important in plant production are the following slug species: Arion lusitanicus, A. rufus and A. distinctus. These pests quickly spread throughout the country, create huge populations and often cause significant losses in yielding of vegetables, some agricultural crops (especially winter rape and winter wheat), ornamental, fruit and herbal plants.