In uninfested fields, 80 cassava tips were artificially infested with 0, 1, 2, 4, 8, 16, 32, or 64 third instars, and 20 or 100 eggs of cassava mealybug, Phenacoccus manihoti Matile‐Ferrero (Hom., Pseudococcidae). Another 80 uninfested tips served as a control. Tips were arranged in a circle of 2...
Neuenschwander, P.
,
Ajuonu, O.
,
[Measuring host finding capacity and arrestment of natural enemies of the cassava mealbug, Phenacoccus manihoti, in the field]
,
Measuring host finding capacity and arrestment of natural enemies of the cassava mealbug, Phenacoccus manihoti, in the field
Life table data for Rastrococcus invadens and its introduced natural enemy Gyranusoidea tebygi were obtained in the field and in the laboratory. The mealybug population's potential rate of increase ranged from 0.066/day to 0.078/day. The potential for increase of the parasitoid was double that of...
Boavida, C.
,
Neuenschwander, P.
,
[Population dynamics and life tables of the mango mealbug, Rastrococcus invadens Williams, and its introduced natural enemy Gyranusoidea tebygi Noyes in Benin]
,
Population dynamics and life tables of the mango mealbug, Rastrococcus invadens Williams, and its introduced natural enemy Gyranusoidea tebygi Noyes in Benin
Life history traits of the mango mealybug, Rastrococcus invadens Williams, were compared between two neighboring mango trees (Mangifera indica L.), one of which was heavily infested and the other slightly infested. On the infested tree, mealybug survival was high because of good feeding condition...
Boavida, C.
,
Neuenschwander, P.
,
[Influence of host plant on the mango mealybug, Rastrococcus invadens]
,
Influence of host plant on the mango mealybug, Rastrococcus invadens
Neuenschwander, P.
,
Zweigert, M.
,
[Biological control of cassava mealybug and green spider mitie in eastern and southern Africa]
,
Biological control of cassava mealybug and green spider mitie in eastern and southern Africa
The endophagous hyperparasitoid Prochiloneurus insolitus (Alam) was offered various stages of Epidinocarsis lopezi (De Santis), a primary parasitoid of the cassava mealybug (CM) Phenacoccus manihoti (Matile-Ferrero). Embryos were surrounded by a trophamnion. Larval development involved four insta...
Goergen, Georg E.
,
Neuenschwander, P.
,
[Biology of Prochiloneurus insolitus (Alam) (Hymenoptera, Encyrtidae), a hyperparasitoid on mealybugs (Homoptera, Pseudococcidae): immature morphology, host acceptance and host range in west Africa]
,
Biology of Prochiloneurus insolitus (Alam) (Hymenoptera, Encyrtidae), a hyperparasitoid on mealybugs (Homoptera, Pseudococcidae): immature morphology, host acceptance and host range in west Africa
The biology and behaviour of the signiphorid Chartocerus hyaipennis (HAYAT) were studied in the laboratory on Epidinocarsis lopezi (DE SANTlS), a parasitoid of the cassava mealybug Phenacoccus manihoti MATlLE-FERRERO. Only mummified secondary hosts, i.e. mealybugs, were accepted for ovi-position....
Goergen, Georg E.
,
Neuenschwander, P.
,
[Chartocerus hyalipennis (Hayat) (Hym: Signiphoridae), a gregarious hyperparasitoid on mealybugs (Hom.: pseudococcidae): biology and host range in west Africa]
,
Chartocerus hyalipennis (Hayat) (Hym: Signiphoridae), a gregarious hyperparasitoid on mealybugs (Hom.: pseudococcidae): biology and host range in west Africa
Neuenschwander, P.
,
Gnanvossou, D.
,
Hauser, S.
,
Goergen, Georg E.
,
Hanna, R.
,
Norgrove, L.
,
Negloh, K.
,
Agboton, C.
,
[Identifying and managing plant health risks for key African crops: fruit and other tree crops]
,
Identifying and managing plant health risks for key African crops: fruit and other tree crops
Bokonon-Ganta, A.H.
,
Alphen, J.J.M. van
,
Neuenschwander, P.
,
[Competition between two parasitoids of the mango mealybug]
,
Competition between two parasitoids of the mango mealybug
Toko, M.
,
Neuenschwander, P.
,
Yaninek, John S.
,
Ortega-Beltran, A.
,
Fanou, A.
,
Zinsou, V.
,
Wydra, K.D.
,
Hanna, R.
,
Fotso, A.
,
Douro-Kpindou, O.K.
,
[Identifying and managing plant health risks for key African crops: cassava]
,
Identifying and managing plant health risks for key African crops: cassava