Self‐fertilization and cross‐fertilization in the land snail Arianta arbustorum (Mollusca, Pulmonata: Helicidae)

摘要: The simultaneously hermaphroditic land snail Arianta arbustorum (L.) (Pulmonata: Helicidae) was long believed to be self-incompatible. In the present study, however, uniparental reproduction observed under laboratory conditions. Snails from two natural populations and culture reared in isolation subadult stage produced fertile eggs. Over a period of three years after maturation, 38.5% unmated snails eggs, mostly second third instead first year. Egg production hatching success (the proportion eggs that hatched) were lower than mated snails. number hatchlings by 1–2% Hatchlings survived as well those result indicate A. can self-fertilize but with great fitness reduction.