“…Some varieties of farm plants, such as Majestic and Pentland Falcon potatoes, or numerous varieties of lupins, are characterized by increased resistance to slugs foraging. It depends on the content of secondary metabolites, mainly quinolizidine alkaloids, such as lupanine, sparteine, quinidine, or atropine (Aguiar & Wink, 2005; Kozłowski, 2017; Kozłowski et al, 2013) (Figure 4). One of lysine‐derived alkaloids, virgilin, which also belongs to quinolizidine alkaloids, was isolated from leaves of Calpurnia aurea within the Fabaceae family (Singh et al, 2010).…”