Essays about: "Phratora vulgatissima"

Found 5 essays containing the words Phratora vulgatissima.

  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. 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

  3. 3. The influence of plant sex on the performance of a detrimental herbivore and two biocontrol agents in the dioecious grey willow, Salix cinerea

    University essay from SLU/Dept. of Ecology

    Author : Md. Faisal Kabir; [2012]
    Keywords : plant sex; Salix; herbivore; omnivore; biocontrol; dioecious; Phratora vulgatissima; Anthocoris nemorum; Orthotylus marginalis;

    Abstract : Dioecious plants can be used as model systems for studying how variation in host plants affects plant-insect interactions. This thesis describes investigations into the impact of plant sex on plant-herbivore-predator interactions for the host plant Salix cinerea. READ MORE

  4. 4. Importance of temperature for the willow bodyguard Perilitus brevicollis

    University essay from SLU/Dept. of Ecology

    Author : Kwabena Baffoe; [2011]
    Keywords : temperature; development rate; body size; development time; Braconidae; Perilitus brevicolis; Phratora vulgatissima; host-parasitoid interactions; bodyguard; biological control; Salix;

    Abstract : The influence of temperature on the performance of the willow bodyguard, Perilitus brevicollis Haliday, 1835 (Hymenoptera: Braconidae) as well as the impact of temperature and parasitism on its host feeding capacity were assessed. The study also aimed at identifying the similarities and differences among two populations (Swedish and Irish) with regards to parasitoid diversity, size and parasitism rate. READ MORE

  5. 5. Abundance of syrphid larvae in willow plantations : role of habitat type, prey (Phratora vulgatissima) availability and interactions with other natural enemies

    University essay from SLU/Dept. of Ecology

    Author : Hans Johansson; [2009]
    Keywords : intraguildpredation; hover fly; foraging behaviour; heteropteran; willow plantation; surrounding habitat; biocontrol; leaf-beetle; mirid; anthocorid;

    Abstract : A large number of hover fly species are as larvae effective predators and often feed on insect pests in plantations. The leaf-beetle Phratora vulgatissima is a common pest in willow plantations and the aim of this study is to study what may affect the presence of hover flies in this system. READ MORE