Sökning: "Lepidoptera"

Visar resultat 26 - 28 av 28 uppsatser innehållade ordet Lepidoptera.

  1. 26. Effect of Tree-Fall Gaps on Fruit-Feeding Nymphalidae Assemblages in a Peruvian Rainforest

    Master-uppsats, Institutionen för fysik, kemi och biologi

    Författare :Sylvia Pardonnet; [2010]
    Nyckelord :Intermediate disturbances; Gap dynamics; Amazonian Lepidoptera;

    Sammanfattning : Tropical rainforests are among the most complex and diverse ecosystems, composed of a mosaic of shady understory under the closed canopy and tree-fall gaps of varying sizes and age. The light reaching the forest floor favors the recruitment of fast growing plant species and provide food resources for other animal species including butterflies. LÄS MER

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

    Magister-uppsats, SLU/Dept. of Plant Protection Biology

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

    Sammanfattning : 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. LÄS MER

  4. 28. Predators of Plutella xylostella in Nicaragua : feeding capacity and potential role in biological control

    L3-uppsats, SLU/Dept. of Ecology

    Författare :Linda Larsson; [2007]
    Nyckelord :Plutella xylostella; natural enemies; predators; biological control; Nicaragua; larval consumption; feeding capacity; cabbage; Lycosidae; Salticidae; Nabidae; Staphylinidae; Tetragnathidae; Gelastocoridae; Reduviidae; insects; spiders;

    Sammanfattning : The diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), is one of the most destructive insect pests of Brassica crops in both temperate and tropical regions over the world. The insect is considered as a key pest of crucifers in Central America. LÄS MER