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The dose-dependent responses of Deroceras panormitanum and Oxyloma pfeifferi to potential novel molluscicides

Lookup NU author(s): Ingo Schuder, Dr Gordon Port


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The dose-dependent responses of the slug Deroceras panormitanum and the snail Oxyloma pfeifferi were tested with three novel molluscicides: cinnamamide, copper ammonium carbonate and ureaformaldehyde. Solutions of products were used at concentrations ranging from 0.005% to 1% (active ingredients: 0.05-149μg/cm2). In a bioassay, antifeedant effects, mortality, repellence and irritation were investigated. Both species were significantly repelled by cinnamamide and a ureaformaldehyde resin at concentrations of 0.5% and 1%, causing a barrier effect. A significant antifeedant effect on D. panormitanum was also seen with those dose-treatment combinations, whereas only Croptex-Fungex® at 0.5% and 0.625% had a significant antifeedant effect on O. pfeifferi. In comparison to the untreated compost, the accumulated leaf damage on treated compost was significantly reduced by all three products at concentrations of 0.5% and above. The behavioural software EthoVision was used for an automated analysis of the behavioural response of D. panormitanum to the irritant effect. All dose-treatment combinations of 0.1% and above significantly reduced the moving activity of the slug, accompanied by severe weight loss and significant increases in mortality with cinnamamide and a ureaformaldehyde resin at 0.5% and 1%. Egg development was completely suppressed at concentrations as low as 0.05%. Significant delays in egg development time were observed with all three molluscicides at concentrations as low as 0.005%. The implications for an integrated control strategy of these pest species are discussed. © 2004 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Schuder I, Port G, Bennison J

Publication type: Article

Publication status: Published

Journal: Crop Protection

Year: 2004

Volume: 23

Issue: 10

Pages: 945-953

ISSN (print): 0261-2194

ISSN (electronic): 1873-6904

Publisher: Elsevier BV


DOI: 10.1016/j.cropro.2004.02.007


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