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dc.contributor.authorOtim, M.
dc.contributor.authorKyalo, G.
dc.contributor.authorKyamanywa, S.
dc.contributor.authorAsiimwe, P.
dc.contributor.authorLegg, J.P.
dc.contributor.authorGuershon, M
dc.contributor.authorGerling, D.
dc.date.accessioned2019-12-04T11:20:50Z
dc.date.available2019-12-04T11:20:50Z
dc.date.issued2008
dc.identifier.citationOtim, M., Kyalo, G., Kyamanywa, S., Asiimwe, P., Legg, J., Guershon, M. & Gerling, D. (2008). Parasitism of bemisia tabaci (homoptera: aleyrodidae) by eretmocerus mundus (hymenoptera: aphelinidae) on cassava. International Journal of Tropical Insect Science, 28(3), 158-167.
dc.identifier.issn1742-7584
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3531
dc.description.abstractParasitism rates of Bemisia tabaci(Gennadius) and searching and oviposition behaviours of its parasitoid Eretmocerus mundus Mercet were compared on two cassava varieties: a glabrous variety, Nase 4 and a hirsute variety, MM970245 withc.88 leaf hairscm2. Parasitism was assessed after potted plants of both varieties were exposed in open fields to natural infestation byB. tabaciand its natural enemy. For the behavioural studies, naive, less than 24-h-old females were individually observed on infested cassava leaflets under a microscope for a maximum of 1 h each. The different foraging behaviours were recorded using the computer software ‘The Observer 5.0’ (Noldus Ltd, Wageningen, The Netherlands). Total per cent parasitism and parasitism by E. Mundus did not differ significantly between varieties. Upon encounter with leaf hairs, the parasitoids stopped and groomed before resuming the host search. The frequency of repeat probing, host feeding and anten nation after probing and host feeding were higher on the glabrous than on the hirsute variety, while the converse was observed when feeding on liquids on the leaf. The duration of host assessment, initial probing, grooming and resting on the leaf was higher on the glabrous than on the hirsute variety. Leaf hairiness at the density investigated caused some changes in the behaviour of the parasitoids, but did not have an overall effect on field parasitism. Since cassava is generally considered to have labrous leaves and the variety MM970245 is one of the most hirsute varieties, we discount leaf hairiness as a factor in determining levels of parasitoid activity.
dc.language.isoen
dc.subjectBemisia Tabaci
dc.subjectEretmocerus Mundus
dc.subjectBehavior
dc.subjectManihot Esculenta
dc.subjectParasitism
dc.titleParasitism of Bemisia tabaci (Homoptera: aleyrodidae) by Eretmocerus mundus (Hymenoptera: aphelinidae) on cassava
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationNational Crops Resources Research Institute, Uganda
cg.contributor.affiliationMakerere University
cg.contributor.affiliationUniversity of Arizona
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationNatural Resources Institute, United Kingdom
cg.contributor.affiliationTel Aviv University
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryUganda
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCassava
cg.iitasubjectPlant Diseases
cg.accessibilitystatusLimited Access
local.dspaceid95503
cg.identifier.doihttps://doi.org/10.1017/S1742758408093181


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