Abstract
The influence of aphid lethal paralysis virus (ALPV), Rhopalosiphum padi virus (RhPV), natural enemies and fungal infection on the population growth of Rhopalosiphum padi and Sitobion avenae in the wheat fields of the Western Cape Province of South Africa was investigated at two sites. Time‐specific life tables were compiled for R. padi at one site. During the logarithmic phase of the development of R. padi aphids, natural enemies were not present in high numbers and the apparent large‐scale mortality observed appeared to be due to other causes. During the decline phase of this aphid population, the population size was reduced by 49%. This reduction coincided with a calculated high mortality of 70 aphids per plant. A dramatic decline in R. padi numbers and a high incidence of ALPV present in the aphid population was experienced during this period. Virus assays were carried out by double‐antibody sandwich enzyme‐linked immunosorbent assay (DAS‐ELISA) and an indirect immunofluorescent technique. Entomophtho...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
