Whiteflies Population and its Impact on the Incidence of Tomato Yellow Mosaic Virus in Venezuela |
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| Authors: | D Anzola R Lastra |
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| Institution: | FUSAGRI, Cagua, Edo. Aragua Laboratorio de Virus de Plantas, Centro de Micorbiologia y Biologia Cellular, Instituto Venezolano de Investigaciones Cientificas, Apartado 1827, Caracas 1010 A, Venezuela |
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| Abstract: | The heavy incidence of Tomato Yellow Mosaic Virus in Venezuela is related to the high population densities of its vector, the whitefly Bemisia tabaci Genn. The main factor affecting the population of the vector is the rainfall pattern; during the rainy season the populations are low but they increase rapidly in the drier months. A good correlation was found between the number of whiteflies trapped and the incidence of infested plants. It seems that in the low laying areas of the tropics the temperature does not have a marked effect on the whitefly population since it remains quite stable throughout the year. |
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