Journal
BIOCONTROL
Volume 62, Issue 6, Pages 749-756Publisher
SPRINGER
DOI: 10.1007/s10526-017-9845-5
Keywords
Carabidae; Deroceras reticulatum; Slug predator; Slug egg; Biological pest control
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Funding
- Studienstiftung des deutschen Volkes
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Slugs such as Deroceras reticulatum Muller (Pulmonata: Agriolimacidae) cause crop losses in temperate regions worldwide. Numerous species of ground beetles (Coleoptera: Carabidae) feed on slugs, but possible interactive effects are poorly known. Here, we compared predation pressure on slug eggs and slug immatures among Abax parallelepipedus Piller and Mitterpacher, Pterostichus niger Schaller, and Pterostichus melanarius Illiger. The latter was most effective against slug eggs but least effective against immature slugs compared to the other species, demonstrating some specificity of ground beetle predation on life stages. Slug egg predation of P. niger in combination with both other species was synergistic, with up to twice as many eggs consumed as for single species treatments. The effect of species combinations on immature slugs showed no differences from expectations based on single species treatments. Our results indicate that combinations of ground beetle species are favourable for the suppression of slugs in early life stages.
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