Essays about: "moth"

Showing result 36 - 40 of 44 essays containing the word moth.

  1. 36. Codling moth, Cydia pomonella, antennal responses to Metschnikowia pulcherrima and Metschnikowia andauensis synthesised volatiles

    University essay from SLU/Plant Breeding and Biotechnology (until 121231)

    Author : Tobias Lindblom; [2012]
    Keywords : Cydia pomonella; Codling moth ; Metschnikowia; yeast; volatiles ; GC EAD ; average; apple;

    Abstract : Insect-yeast interactions have been known for decades but are poorly understood. To investigate the codling moth (Cydia pomonella ) olfactory connection to yeasts, volatiles from two ascomycete yeasts, Metschnikowia pulcherrima and Metschnikowia andauensis, were analysed using gas chromatography combined with electroantennographic detection (GC-EAD). READ MORE

  3. 37. Effect of patch heterogeneity on oviposition in two lepidopteran Brassica pests

    University essay from SLU/Dept. of Ecology

    Author : Tove Maria Nilsson; [2011]
    Keywords : Pieris brassicae; Plutella xylostella; Brassica oleracea; oviposition; host plant; egg distribution; patch heterogeneity;

    Abstract : The plant family of Brassicaceae is widespread around the world and many members of the family are important food and oil-seed crops. There are many insect pests specialized on brassicaceous crops and interactions between crop and pest are well studied. READ MORE

  4. 38. Plume interaction and odour source spacing ofpheromone and non-host volatiles : : Behaviouraleffects on bark beetles and moths

    University essay from SLU/Dept. of Plant Protection Biology

    Author : Muhammad Binyameen; [2009]
    Keywords : Odour; plume structure; plume interactions; Spodoptera littoralis; S. litura; Ips typographus; Lepidoptera; Noctuidae; Coleoptera; Scolytidae; PID; orientation; sex pheromone; NHV ;

    Abstract : Insects have a remarkable ability to sense whether odours are released from one point source or from two closely separated ones. Therefore it is of interest to study the interactions of pheromone component odour plumes to affect the insect behaviour when the release points ofdifferent components are physically separated. READ MORE

  5. 39. Field margins vs. insecticides : factors affecting the density of predators attacking Plutella xylostella

    University essay from SLU/Dept. of Ecology

    Author : Lina Grönberg; [2007]
    Keywords : predators; Plutella xylostella; diamondback moth; field margins; biological control; Nicaragua;

    Abstract : Biological control provides a tool to reach goals such as maintaining sustainable agroecosystems and decreasing the use of pesticides. Studies show that generalist predators can reduce prey populations effectively and, thus, may function as good biocontrol agents. READ MORE

  6. 40. Induced defense in tomato damaged by Spodoptera littoralis larvae

    University essay from SLU/Dept. of Plant Protection Biology

    Author : Anna Eriksson; [2007]
    Keywords : tomato; induced defense; Spodoptera littoralis;

    Abstract : Plants defend themselves against feeding insects via both a constitutive; always existing defense, and/or via an induced defense that is activated in response to the feeding damage. The aim of this study was to investigate the induced defense in tomato after damage by insect larvae. READ MORE