chapter  21
Plant Virus Detection in Animal Vectors
ByRudra P. Singh
Pages 22

Many plant viruses depend on animal vectors for their spread in nature (sec reviews by Harris, 1990; Mandahar, 1990; see Chapter 3 in this book). Knowledge of the virus content in vectors of plant viruses is essential to (1) determine the mechanism of transmission and sites of specificity, (2) assess the presence of viruliferous vectors in field populations, and (3) facilitate epidemiological studies and disease management. For example, in some countries, when virus vector populations reach a certain threshold, a warning system for pesticide application is activated (Hull, 1968; Parry, 1987).