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Whiteflies Population and its Impact on the Incidence of Tomato Yellow Mosaic Virus in Venezuela
Author(s) -
Anzola D.,
Lastra R.
Publication year - 1985
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1985.tb00815.x
Subject(s) - whitefly , biology , vector (molecular biology) , incidence (geometry) , population , tropics , wet season , population density , veterinary medicine , plant virus , horticulture , virus , agronomy , botany , virology , ecology , demography , medicine , biochemistry , physics , sociology , optics , gene , recombinant dna
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.