Research Index

  • Systematics of the whitefly Bemisia tabaci species complex … More

    The worldwide distribution and extensive genetic diversity of the whitefly, Bemisia tabaci, has long been recognized. However, the levels of separation within B. tabaci and the nomenclature of the various genetic groups have been a subject of debate. We integrate behavioural, genetic, and molecular phylogenetic approaches to discern species level separations within this complex.

  • Tripartite interactions between whiteflies, begomoviruses and plants… More

    Plant-mediated interactions between begomoviruses and whiteflies exert important influences on the population dynamics of vectors and the epidemiology of plant diseases. Does the infection of plants by the viruses affect the performance of the vector whiteflies? Do the whiteflies increase their abundance more rapidly on virus-infected plants than on uninfected plants? What are the physiological and molecular mechanisms underlying these interactions?

  • Competitive interactions between whitefly cryptic species … More

    Competitive displacement has been seen between whiteflies especially displacement of indigenous whiteflies by invaders. How widespread and rapid does displacement take place? What are the major intrinsic and external factors mediating the competitive interactions between whiteflies? For example, how important are mating interactions, host plants, and/or insecticide application in determining the displacement of one species by another?

  • Physiological and molecular mechanisms of whitefly-plant interactions… More

    Whiteflies in the Bemisia tabaci complex vary widely in their host plant range, and the invasive B and Q whiteflies seem to have a much wider range of host plants than the indigenous species. What factors determine the differences in host plant range between invasive and indigenous whiteflies? How do different whiteflies respond to plant defences? Do the whitefly endosymbionts play a role in host plant utilization?

  • Biological control and management of whiteflies and other vegetable insect pests

    Development and implementation of effective integrated pest management (IPM) systems can reduce insecticide input and promote production efficiency and products safely. What can we do to enhance naturally occurring biological control in the field? How can we develop IPM systems that are acceptable to farmers? How can we help the extension service and framers to implement IPM systems in practice?