Plant-insect relationships from the ecosystem to the molecular level

Applied Entomolgy

Plants in the field are surrounded by myriads of insects. These insects use their flight capacity in search of food, mates and shelter or nests, and locate these crucial resources guided by chemical and physical stimuli. In agroecosystems, feeding herbivores compete with man for food, a highly critical aspect in view of the increasing global food shortage and the urgent demand for sufficient and healthy human nutrition. We investigate insect-plant relationships, in particular as a basis for more sustainable crop and pest management. Bottom-up approaches aim at strengthening the plant’s defense, leading to more resistant genotypes or to the exploitation of useful biotic or abiotic environmental influences. Top-down approaches aim at enhancing efficacy of natural antagonists such as parasitoid wasps that can be mass-reared in reliable quality and released in biological control programs.

Key research topics with herbivore pest insects, parasitoids and native bees include dispersal behavior of insects in agroecosystems, chemically and physically mediated relationships, and multitrophic interactions between crop plants and insects.

Research topics

  • Dispersal behavior

  • Chemical and physical ecology

  • Multitrophic interactions

Interdisciplinary

  • Crop science

  • Plant physiology

  • Organic chemistry

  • Molecular biology

Contact Person

Prof. Dr. Silvia Dorn

ETH Zurich
Institute of Agricultural Sciences
Website
silvia.dorn-at-ipw.agrl.ethz.ch
+41 (0)44 632 39 21

eligible for PLANT FELLOWS

Recent publications

  • Title: Movement of insect pests in agricultural landscapes
    Author(s): Mazzi, D.; Dorn, S.
    Source: ANNALS OF APPLIED BIOLOGY, 160 (2): 97-113 MAR 2012
    Document type: Review (Details)
  • Title: Drought changes plant chemistry and causes contrasting responses in lepidopteran herbivores
    Author(s): Gutbrodt, Bettina; Mody, Karsten; Dorn, Silvia
    Source: OIKOS, 120 (11): 1732-1740 NOV 2011
    Document type: Article (Details)
  • Title: Ability of the Oriental Fruit Moth Grapholita molesta (Lepidoptera: Tortricidae) to Detoxify Juglone, the Main Secondary Metabolite of the Non-host Plant Walnut
    Author(s): Piskorski, Rafal; Ineichen, Simon; Dorn, Silvia
    Source: JOURNAL OF CHEMICAL ECOLOGY, 37 (10): 1110-1116 OCT 2011
    Document type: Article (Details)
  • Within-orchard variability of the ecosystem service 'parasitism': Effects of cultivars, ants and tree location
    Mody, Karsten; Spoerndli, Charlotte; Dorn, Silvia
    BASIC AND APPLIED ECOLOGY, 12 (5): 456-465 2011 (Details)
  • How the oligophage codling moth Cydia pomonella survives on walnut despite its secondary metabolite juglone
    Piskorski, R; Dorn, S
    JOURNAL OF INSECT PHYSIOLOGY 57 (6): 744-750 JUN 2011 (Details)