Factors controlling virus vector host plant interactions : the model system Frankliniella occidentalis and Tomato spotted wilt virus Frankliniella occidentalis tospovirus Tomato spotted wilt virus vector competence haplodiploidy intraspecific variation predictive models vector manipulation hypothesis innate immunity. Vektorkompetenz Haplodiploidie intraspezifische Variation Vorhersagemodelle angeborene Immunität