Plant nutrient supply determines competition between phytophagous insects.
The occurrence of indirect competition between two phytophagous species from different feeding guilds (a phloem-feeder and leaf-chewer) was assessed.
Year of Publication2011
Indirect competition is often mediated by plant responses to herbivore feeding damage and is common among phytophagous insect species. Plant-mediated responses may be altered by abiotic conditions such as nutrient supply, which can affect plant growth, morphology, and the concentration of primary and secondary metabolites. Nutrient supply can be manipulated by the type and amount of fertilizer applied to a plant. Brassica oleracea plants were grown in several types of fertilizer, including those commonly used in sustainable and conventional agricultural systems. The occurrence of indirect competition between two phytophagous species from different feeding guilds (a phloem-feeder and leaf-chewer) was assessed. The leaf-chewer reduced aphid populations on plants growing in most fertilizer treatments, but not on those in the ammonium nitrate fertilizer treatment, which caused the highest concentration of foliar nitrogen. The potential consequences of our findings are discussed for phytophagous species in conventional and sustainable agricultural systems.Citation
Staley, J. T., Stafford, D. B., Green, E. R., Leather, S. R., Rossiter, J. T., Poppy, G. M., Wright, D. J. (2011) "Plant nutrient supply determines competition between phytophagous insects."Proceedings of the Royal Society B: Biological Sciences 278 (1706) pp 718-724
This item is categorised as follows
- Subject Collection > Environmental impact > Wildlife & biodiversity
- Subject Collection > Arable & industrial crops > Nutrition & fertilisers
Additional keywords/tagsplutella xylostellaplant mediated competitionnitrogenglucosinolatebrevicoryne brassicaeinduced defence
Supporting the development of the national rural economy.Website
This is a brief summary of an item in the OpenFields Library. This free online library contains items of interest to practitioners and researchers in the agricultural and landbased industries.