Helicidae
Helicidae is a family of air-breathing land snails with coiled shells, including the Roman snail and many familiar European species.
Gastropoda: A large class of mollusks that includes snails, slugs, and sea butterflies. Helicidae belongs to this class of mollusks, distinguished by a muscular foot and a twisted body plan.
Roman snail: A large European land snail, Helix pomatia, traditionally eaten as escargot. This well-known helicid is both a culinary species and a widely studied example of the family.
Estivation: A state of dormancy or reduced activity that helps animals survive hot or dry conditions. Helicids can seal themselves inside their shells and reduce water loss during dry periods.
Escargot: A dish of cooked edible land snails, especially associated with French cuisine. Roman snails and garden snails are among the helicids used as escargot.
Molecular phylogenetics: The study of evolutionary relationships using comparisons of DNA and other molecular data. DNA analyses can test whether traditional shell-based helicid classifications reflect ancestry.
Stylommatophora: A clade of mostly terrestrial gastropods bearing eyes at the tips of retractable tentacles. Helicidae sits within this land-snail group, whose tentacles help distinguish its members.
Garden snail: A common name for Cornu aspersum, a land snail native to the Mediterranean region. Its success in gardens and disturbed habitats makes it a familiar helicid beyond its native range.
Hibernation: A prolonged state of reduced metabolism that enables survival through cold conditions. Some helicids become inactive in winter, often attached to sheltered surfaces.
Heliculture: The farming of land snails for food, cosmetics, or other commercial uses. Helicids are among the principal snails raised in commercial snail farming.
Gastropod taxonomy: The classification and naming of gastropods, including snails and slugs. Species limits and generic placement within Helicidae continue to be refined by taxonomic work.