Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Damage, population dynamics, movement and control of pest helicid snails in southern Australia.

Abstract

The snails Theba pisana, Cernuella virgata, Cochlicella acuta and C. barbara are introduced pests of cereal crops in southern Australia. Their biology and the damage caused by them are described. They can be controlled by burning fields prior to sowing crops or reducing the abundance of tall and shady weeds which the snails use as aestivation sites. Broadacre use of molluscicides is uneconomic, but strategic application of strips of bait along the edges of fields may prevent invasion of snail-free crops from adjacent areas with high densities. Biological control has not been attempted, but natural enemies shuch as sciomtyzid flies may have potential for control of the snails.