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Population data concerning the cassava mealybug (CM) Phenacoccus manihoti Matile-Ferrero, the introduced parasitoid Epidinocarsis lopezi (De Santis), and indigenous antagonists were collected, together with ecological and plant growth variables, during a survey of 414 fields covering all ecologic...


Neuenschwander, P.Hammond, W.Ajuonu, O.Gado, A.Echendu, N.Bokonon-Ganta, A.H.Allomasso, R.Okon, I.[Biological control of the cassava mealybug, Phenacoccus manihoti (Hom., Pseudococcidae) by Epidinocarsis lopezi (Hym., Encyrtidae) in West Africa, as influenced by climate and soil]Biological control of the cassava mealybug, Phenacoccus manihoti (Hom., Pseudococcidae) by Epidinocarsis lopezi (Hym., Encyrtidae) in West Africa, as influenced by climate and soil

Among several natural enemies introduced to combat the cassava mealybug, Phenacoccus manihoti (Homoptera: Pseudococcidae), the neotropical parasitoid Apoanagyrus (Epidinocarsis) lopezi (Hymenoptera: Encyrtidae) was the most successful. It established in 26 African countries, causing a satisfactor...


Neuenschwander, P.[Biological control of the cassava mealybug in Africa: a review]Biological control of the cassava mealybug in Africa: a review

In surveys of cassava fields in the coastal savanna and rain forest zones of Ghana, eight species of ants, mostly in the genera Camponotus, Crematogaster and Pheidole (Hymenoptera: Formicidae), were found attending cassava mealybug, Phenacoccus manihoti Matile-Ferrero. Ant densities were much hig...


Cudjoe, A.Neuenschwander, P.Copland, M.[Interference by ants in biological control of the cassava mealybug Phenacoccus manihoti (Hemiptera: Pseudococcidae) in Ghana]Interference by ants in biological control of the cassava mealybug Phenacoccus manihoti (Hemiptera: Pseudococcidae) in Ghana

The coccinellid, Hyperaspis notata Mulsant, is associated with the mealybugs Phenacoccus manihoti Mat.‐Ferr. and P. herreni Williams, on cassava in southern Brazil and the highlands of Colombia. Brought to Africa to help control the accidentally introduced P. manihoti, its range of target prey an...


Staubli Dreyer, B.Neuenschwander, P.Baumgaertner, J.U.Dorn, S.[Trophic influences on survival, development and reproduction of Hyperaspis notata (Col., Coccinellidae)]Trophic influences on survival, development and reproduction of Hyperaspis notata (Col., Coccinellidae)
Goergen, Georg E.Neuenschwander, P.Coyne, D.[Conserving and exploiting biodiversity in crop cultivation in sub-Saharan Africa]Conserving and exploiting biodiversity in crop cultivation in sub-Saharan Africa

Water hyacinth,Eichhornia crassipes (Martius) Solms-Laubach (Pontederiaceae) was first reported in Bénin in 1977 and about 10 years later became the major floating water weed in the south east, obstructing boat traffic and fisheries. Water hyacinth multiplies in permanently fresh water in the swa...


Thielen, R.Ajuonu, O.Schade, V.Neuenschwander, P.Adite, A.Lomer, C.[Importation, releases, and establishment of Neochetina spp. (col., curculionidae) for the biological control of water hyacinth, Eichhomia crassipes CLil., Pontederiaceae), Benin, West Africa]Importation, releases, and establishment of Neochetina spp. (col., curculionidae) for the biological control of water hyacinth, Eichhomia crassipes CLil., Pontederiaceae), Benin, West Africa

Cassava(Manihot esculenta), a root crop originating in Tropical America, has been called Africa’s food insurance but vital as that is, it has the potential to be much more. Already, cassava provides more than half of the dietary calories for over 200 million people in sub-Saharan Africa (about ha...


Dixon, Alfred G.O.Bandyopadhyay, RanajitCoyne, D.L.Ferguson, M.Ferris, R.S.B.Hanna, R.Hughes, J.Ingelbrecht, I.Legg, J.P.Mahungu, N.M.Manyong, Victor M.Mowbray, D.Neuenschwander, P.Whyte, J.Hartmann, P.Ortiz, R.[Cassava: from poor farmers crop to pacesetter of African rural development]Cassava: from poor farmers crop to pacesetter of African rural development

The spatial dispersion pattern and the intracanopy distribution of the mango mealybug, Rastrococcus invadens Williams, were assessed during one year in a small mango plantation, in order to develop sampling plans and facilitate sampling in mango trees. Mean number of mango mealybugs per leaf diff...


Boavida, C.Neuenschwander, P.Schulthess, F.[Spatial distribution of Rastrococcus invadens Williams (Hom., Pseudococcidae) in mango trees]Spatial distribution of Rastrococcus invadens Williams (Hom., Pseudococcidae) in mango trees

Assogbadjo, A.E.Amoussou, G.Sinsin, B.Neuenschwander, P.[Hippopotamus][Hippopotame]Hippopotame
Goergen, Georg E.Ajuonu, O.Kyofa-Boamah, M.E.Umeh, V.Bokonon-Ganta, A.H.Tamo, M.Neuenschwander, P.[Classical biological control of Papaya mealybug in West Africa]Classical biological control of Papaya mealybug in West Africa

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