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dc.contributor.authorOtim, M.
dc.contributor.authorLegg, D.J.
dc.contributor.authorKyamanywa, S.
dc.contributor.authorPolaszek, A.
dc.contributor.authorGerling, D.
dc.identifier.citationOtim, M., Legg, D.J., Kyamanywa, S., Polaszek, A. & Gerling, D. (2006). Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease–resistant and susceptible varieties. Biocontrol Science and Technology, 16(2), 205-214.
dc.description.abstractThree field trials were conducted at Namulonge Agricultural and Animal Production Research Institute to investigate the population dynamics of Bemisia tabaci Gennadius and its associated aphelinid parasitoids in Uganda. Results showed that more whitefly occurred on the cassava mosaic disease-resistant variety, (Nase 4) compared to the susceptible variety, (Ebwanatereka). Two species of aphelinid parasitoids, Eretmocerus mundus Mercet and Encarsia sophia Girault and Dodd, were identified during the study. Overall percent parasitism did not differ significantly (P>0.05) between varieties in all the trials, but significant differences occurred at 13, 15 and 21 weeks after planting during late season (2000), 18 weeks after planting during early season (2001), and 8 weeks after planting during late season (2001). The trends in the build up in numbers of both parasitoids species and apparent parasitism were similar, differed significantly on certain dates. It was, however, noted that percent parasitism decreased with nymph number. The significance of this phenomenon on the potential use of these aphelinid parasitoids as biocontrol agents of the cassava whitefly is discussed.
dc.description.sponsorshipRockefeller Foundation
dc.subjectBemisia Tabaci
dc.subjectBiological Control
dc.subjectAfrican Cassava Mosaic Virus
dc.subjectEncarsia Sophia
dc.subjectEretmocerus Mundus
dc.subjectPopulation Dynamics
dc.subjectAphelinid Parasitoids
dc.titlePopulation dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationMakerere University
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationNatural Resource Institute, United Kingdom
cg.contributor.affiliationNatural History Museum, United Kingdom
cg.contributor.affiliationTel Aviv University
cg.coverage.regionEast Africa
cg.coverage.regionMiddle East
cg.coverage.countryUnited Kingdom
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectDiseases Control
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Ecology
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.accessibilitystatusLimited Access

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