Essays about: "egg-laying preference"

Found 4 essays containing the words egg-laying preference.

  1. 1. Fundamental and realized niches of two chrysomelid competitors on two Salix host species

    University essay from SLU/Dept. of Ecology

    Author : Sharmin Kawshar; [2015]
    Keywords : fundamental niche; realized niche; Galerucella lineola; Phratora vulgatissima; Salix viminalis; Salix dasyclados; interspecific competition; egg-laying preference; coexistence;

    Abstract : The fundamental and realized niches of phytophagous insects constitute an important topic in contemporary ecology. Hutchinson (1965) formulized the concept of the fundamental and realized niche with regards to species responses to interspecific competition; and for the herbivore insects’ community the consequence of interspecific competition is a debatable and questionable from the very beginning to till now. READ MORE

  2. 2. Odour-mediated behaviour in codling moth, Cydia pomonella : do fermentation odours affect the attraction and oviposition behaviour in codling moth?

    University essay from SLU/Department of Plant Protection Biology

    Author : Lillemor Torstensdotter; [2015]
    Keywords : Cydia pomonella; codling moth; fermentation; apples;

    Abstract : The codling moth, Cydia pomonella is a common pest in apple orchards and can be found worldwide. Feeding by codling moth larvae can cause a substantial decrease in apple yield. Control methods comprise for example the use of pesticides, viruses and pheromones. READ MORE

  3. 3. Foliar nutrition: targeted fertilization to test herbivore preference

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Johan Penner; [2014]
    Keywords : Foliar nutrition; Salix viminalis; Phratora vulgatissima; Fertilization; Feeding trial;

    Abstract : Abstract The aim of this study was to increase knowledge of how plants as a whole respond to targeted fertilization and to refine the method of foliar nutrition fertilization. The experiment also aimed to test how herbivores respond when presented with a choice between fertilized and unfertilized Salix leaves in a feeding trial experiment. READ MORE

  4. 4. Response to olfactory stimuli in gregarious Pieris brassicae caterpillars

    University essay from SLU/Dept. of Ecology

    Author : Louise Malmgren; [2011]
    Keywords : olfaction; olfactometer; caterpillar; host search; Pieris brassicae; Lepidoptera; Brassica oleracea; cauliflower; broccoli; cabbage; stimuli;

    Abstract : Insects search primarily to find food, egg-laying sites, resting sites or conspecifics. Understanding the search behaviour of insects at the point when they are not in contact with the host is relevant to for instance the control of pest species. READ MORE