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Biocontrol introduction

Target pest: Helix aspersa (Stylommatophora: Helicidae), brown garden snail

Agent introduced: Turdus merula (Passeriformes: Turdidae), blackbird

Imported: 1860s

Import source: Britain

Released: 1860s

Establishment: Distributed throughout New Zealand

Impacts on target: Not quantified


Cameron PJ, Hill RL, Bain J, Thomas WP (1989). A Review of Biological Control of Invertebrate Pests and Weeds in New Zealand 1874-1987. Technical Communication No 10. CAB International Institute of Biological Control. DSIR Entomology Division. 424p.