Impact of the exotic parasitoid Epidinocarsis lopezi on cassava mealybug (Phenacoccus manihoti) populations

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dc.creatorHammond, W.N.O.
dc.creatorNeuenschwander, Peter
dc.creatorHerren, H.R.
dc.date1987-12
dc.date2020-07-13T13:06:18Z
dc.date2020-07-13T13:06:18Z
dc.date.accessioned2026-06-27T16:04:55Z
dc.descriptionEpidinocarsis lopezi an exotic parasitoid to Africa, was first released to control the cassava mealybug (CM), Phenacoccus manihoti, at IITA (Ibadan) in November 1981, and a year later at Abeokuta, both in southwestern Nigeria. Population dynamics study of CM and its natural enemies was conducted for 4 years. CM population peaks usually occurred during the second half of the dry season (January-April). E. lopezi was the only natural enemy that was found during the whole year and in high densities. Parasitization rates of E. lopezi alternated with CM densities, thus suggesting a regulatory effect on CM populations by this parasitoid. CM populations were drastically reduced in release fields when compared with control fields. Subsequently CM populations have been maintained below injury levels for 4 years. E. lopezi is considered an efficient parasitoid of the CM.
dc.identifierhttps://hdl.handle.net/10568/108742
dc.identifier.urihttp://hdl.handle.net/123456789/121969
dc.languageen
dc.publisherSpringer
dc.rightsLimited Access
dc.sourceHammond, W.N.O., Neuenschwander, P. & Herren, H.R. (1987). Impact of the exotic parasitoid Epidinocarsis lopezi on cassava mealybug (Phenacoccus manihoti) populations. International Journal of Tropical Insect Science, 8(4-6), 887-891.
dc.subjectepidinocarsis lopezi
dc.subjectphenacoccus manihoti
dc.subjectbiological control
dc.subjectnigeria
dc.subjectpseudococcidae
dc.subjectmealybugs
dc.titleImpact of the exotic parasitoid Epidinocarsis lopezi on cassava mealybug (Phenacoccus manihoti) populations
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)