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  • Chewing Pests Team

    Working group

    The Chewing Pest WG is a new group for IRAC combining the past Lepidoptera and Coleoptera WGs and complements the Sucking Pest WG. These two key groups sit within the IRAC Crop Protection Team along with the Nematode WG. It is recognised that the WG will have a broad remit given the potential range of crops and pests but, by focussing on specific areas, it is planned to deliver appropriate IRM strategies. Team Objectives Maintain currency of the global…


  • Melon & Cotton Aphid Aphis gossypii

    Pest profile

    Aphis gossypii Glover (Hemiptera: Aphididae) is a destructive pest of numerous crops worldwide. This sap-sucking insect affects plants via direct feeding and indirectly via plant viral disease transmission (more than 50 plant pathogenic viruses known). It has a very wide host range with at least 700 host plants being known world-wide. It can seriously affect most cucurbit and solanaceous vegetable crops as well as leafy vegetables, legumes, potato, ornamentals, stone fruits, oil seed rape, citrus, cotton or many other…


  • Modelling

    Page

    Modelling insecticide resistance (Download the information as a pdf file) What is insecticide resistance modelling and who uses it? One of the most common questions asked of insecticide resistance researchers is “How long will it take for insecticide resistance to occur?” One way to answer this questions is to look at past events and identify trends that may repeat. This can be informative, but limited to general trends. For example in the crop protection market, it is often predicted…


  • Outreach Team

    Working group

    One of IRAC’s key roles, coordinated by the Outreach (formerly Communication & Education / C&E) Team, is the dissemination of information that will promote good IRM practices around the world. This is done through the generation of printed (posters, handouts, etc.) and electronic (website, eTools, etc.) educational material that can be used by a wide audience. Members of IRAC are encouraged to give presentations and hold poster sessions at national and international meeting and conferences. A wide range of…


  • (PDF) IRM Vector Manual

    Publication


  • Western flower thrips Frankliniella occidentalis

    Pest profile

    Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) originated in western North America and has since become a major pest of vegetables, fruit and ornamental crops across the US and around the world. F. occidentalis are small (1-2 mm long), slender, soft-bodied insects that are yellow to light brown in color; adults have distinctive fringed wings. It can develop quickly, going from egg to adult in two weeks or less at favorable temperatures. Adult females insert eggs into plant tissue under the epidermis….


  • (PDF) IRM Mini Vector Booklet (French)

    Publication


  • Coleoptera Team

    Working group

    (Incorporating the OSR & Pollen Beetle Groups) Pyrethroid resistance has been recorded in European populations of the pollen beetle (Meligethes aeneus) since 1999, when it was first reported in Eastern France. Pyrethroid insecticides have long been favoured as the method of control for insect pests of oilseed rape and a lack of alternative insecticides with different modes of action, has ensured a continued high selection pressure for pyrethroid resistance. This has lead to the spread of resistant pollen beetle…


  • Pollen Beetle Meligethes aeneus

    Pest profile

    M. aenus is an important pest of oilseed rape particularly in Western Europe. The larvae are up to 3 mm long and white with brown sclerotised plates. Eggs are laid in the flower buds of the host-plant and the larvae develop within the flowers. Oviposition damage to the buds of oilseed rape can cause the flowers to drop off. Both adults and larvae feed on the pollen and nectar in the flowers. Resistance to pyrethroids has been reported in this…


  • Tobacco Whitefly Bemisia tabaci

    Pest profile

    Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) is one of the world’s top 100 invasive organisms found on over 900 host plants all around the world. It is currently recognized as a complex of cryptic species with world wide distribution. The two most important phylogenetic groups of B. tabaci from an agricultural perspective are MEAM1 (Middle East-Asia Minor 1; also commonly known as biotype B) and MED (Mediterranean; including the commonly known biotype Q among others). It reportedly transmits over a…