This polyphagous moth is one of the principal enemies of cotton and maize. It frequently attacks vegetable plants: tomato, cabbage or bean but also rice, wheat and soybean. Corn earworm is found throughout the temperate and (sub)tropical parts of the Americas. It cannot overwinter successfully farther north than about 40°C (104°F); but being highly dispersive, it will immigrate into the northern USA and southern Canada each spring Adults appear in April-May and can be observed until October. Females lay…
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…is available in a number of languages: Spanish, Portuguese, Mandarin Chinese, Japanese, Hindi, French, Italian, Korean, Arabic, Russian, Bahasa (Indonesian), Russian, Tagalog (Philippines) IRAC Video: Insecticide Mode of Action Explained An animated and diagrammatic explanation that explains the importance of mode of action as the basis for effective and sustainable resistance management. English Version: The video is available in a number of languages: Spanish, Portuguese, Mandarin Chinese, French, Italian, Korean, Arabic, Russian, Bahasa(Indonesian), Khmer , Japanese , Tagalog (Philippines), Hindi…
The IRAC Nematode Working Group is the most recently established IRAC team. The initial objectives of the team will be to investigate the resistance risk of nematicides and to develop a mode of action classification scheme similar to that available for insecticides and acaricides. There is clear evidence that nematicide resistance can occur under laboratory conditions, but it is less clear if field resistance can occur under natural conditions. There is however some evidence to show that increased degradation of…
Of the approximately 460 species of Anopheline mosquitoes known, over 100 can transmit the plasmodia which cause malaria. However, only 30–40 species commonly transmit malaria to humans. Malaria, transmitted by Anopheline mosquitoes, is responsible globally for the deaths of around 1 million people each year. Some species of Anopheles can also act as the vectors of the filariasis causing parasites, Wucheria bancrofti and Brugia malayi. They are also implicated in the transmission of some arboviruses including West Nile Virus,…
This pest profile covers two species of Aedes mosquitoes – Aedes aegypti, the Yellow fever mosquito and Aedes albopictus, the Tiger mosquito, (sometimes classified by subgenus, Stegomyia aegypti and Stegomyia albopictus.) These two species are responsible for the transmission of dengue fever, yellow fever and chikungunya. Aedes aegypti on the left and Aedes albopictus on the right. Note the different thorax markings (Courtesy of CDC). Click for further details on the species difference Dengue fever is a viral disease…
Mosquitoes of the genus Culex are distributed world-wide and belong to the subfamily Culicinae, which contains several medically important genera. Breeding sites of these mosquitoes are often in collections of water like puddles, ditches or rice-fields but also man-made containers such as tin-cans, bottles or storage tanks. Medically important species like Culex quinquefasciatus or Culex pipiens pipiens prefer to breed in water that is polluted by organic debris such as rotting vegetation or human and animal excrement. Due to…