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

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    Date
    1987-12
    Author
    Hammond, W.N.O.
    Neuenschwander, P.
    Herren, H.R.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Epidinocarsis 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.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/6945
    IITA Authors ORCID
    Peter NEUENSCHWANDERhttps://orcid.org/0000-0003-0580-0376
    Research Themes
    Plant Production and Health
    IITA Subjects
    Agronomy; Cassava; Disease Control; Food Security; Pests of Plants; Plant Breeding; Plant Diseases; Plant Health; Plant Production
    Agrovoc Terms
    Epidinocarsis Lopezi; Phenacoccus Manihoti; Biological Control; Nigeria; Mealybugs; Pseudoscience
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Headquarters and Western Africa Hub
    Journals
    International Journal of Tropical Insect Science
    Collections
    • Journal and Journal Articles4835
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