Surveys were carried out in Zambia twice yearly from 1986 to 1990, to assess the impact of a biological control campaign against the cassava mealybug (CM), Phenacoccus manihoti Mat.-Ferr., throughout the infested area. From 1984 onward, the exotic parasitoid Epidinocarsis lopezi (De Santis) (Hym....
Chakupurakal, J.
,
Markham, R.H.
,
Neuenschwander, P.
,
Sakala, M.
,
Malambo, C.
,
Mulwanda, D.
,
Banda, E.
,
Chalabesa, A.
,
Bird, T.
,
Haug, T.M.
,
[Biological control of the cassava mealybug, Phenacoccus manihoti (Homoptera: Pseudococcidae), in Zambia]
,
Biological control of the cassava mealybug, Phenacoccus manihoti (Homoptera: Pseudococcidae), in Zambia
The effects of egg clutch size on development and survivorship of the larger grain borer, Prostephanus truncatus (Horn) (Col.: Bostrichidae) on maize were measured in the laboratory using single grains of the white maize variety, TZSR-W, at 30 ± 2°C and 70 ± 5% RH. Varying numbers of P. truncatus...
The biology of Sitophilus zeamais Motschulsky, an important pest of stored commodities, is well described in the literature. To integrate current knowledge and to understand better the population dynamics of this species in rural maize, Zea mays L., stores, we developed a distributed-delay, demog...
Meikle, W.G.
,
Holst, N.
,
Markham, R.H.
,
[Population simulation model of Sitophilus zeamais (Coleoptera: Curculionidae) in grain stores in West Africa]
,
Population simulation model of Sitophilus zeamais (Coleoptera: Curculionidae) in grain stores in West Africa
Laboratory experiments using whole cobs were conducted to examine the effect of varying densities of the larger grain borer, Prostephanus truncatus and the maize weevil, Sitophilus zeamais on rate of population increase by the histerid beetle, Teretriosoma nigrescens, a predator primarily of P. t...
Ayertey, J.N.
,
Meikle, W.G.
,
Borgemeister, C.
,
Camara, M.
,
Markham, R.H.
,
[Studies on predation of Prostephanus truncatus (Horn) (Col., Bostrichidae) and Sitophilus zeamais Mots. (Col., Curculionidae) at different densities on maize by Teretriosoma nigrescens Lewis (Col., Histeridae)]
,
Studies on predation of Prostephanus truncatus (Horn) (Col., Bostrichidae) and Sitophilus zeamais Mots. (Col., Curculionidae) at different densities on maize by Teretriosoma nigrescens Lewis (Col., Histeridae)
A fungal entomopathogen, Beauveria bassiana, was used to treat maize ears placed in traditional grain stores against Prostephanus truncatus in a field experiment conducted from September 1997 to March 1998 in the Benin Republic, West Africa. Treatments included oil-based spray with and without co...
Meikle, W.G.
,
Cherry, A.J.
,
Holst, N.
,
Hounna, B.
,
Markham, R.H.
,
[The effects of an entomopathogenic fungus, Beauveria bassiana (Balsamo) Vuillemin (Hyphomycetes), on Prostephanus truncatus (Horn) (Col: Bostrichdae), Sitophilus zeamais (Col: Curculionidae) and grain losses in stored maize in the Benin Republic]
,
The effects of an entomopathogenic fungus, Beauveria bassiana (Balsamo) Vuillemin (Hyphomycetes), on Prostephanus truncatus (Horn) (Col: Bostrichdae), Sitophilus zeamais (Col: Curculionidae) and grain losses in stored maize in the Benin Republic
Delta traps baited with maize cobs, which were infested each with one male Prostephanus truncatus (Horn) (Col.: Bostrichidae), were distributed in southern Benin and collected after one, two, three and four weeks. The numbers of P. truncatus caught during the different trapping periods were not s...
Scholz, D.
,
Borgemeister, C.
,
Meikle, W.G.
,
Markham, R.H.
,
Poehling, H.M.
,
[Infestation of maize by Prostephanus truncatus initiated by maleproduced pheromone]
,
Infestation of maize by Prostephanus truncatus initiated by maleproduced pheromone
Investigations were carried out in southern Benin on the annual flight cycle and the effects of weather variables on the flight activity of Prostephanus truncatus (Horn) and its natural enemy, Teretriosoma nigrescens Lewis. Two seasonal peaks in flight activity of P. truncatus were observed, one ...
Borgemeister, C.
,
Meikle, W.G.
,
Scholz, D.
,
Adda, C.
,
Degbey, P.
,
Markham, R.H.
,
[Seasonal meteorological factors influencing the annual flight cycle ofProstephanus truncatus (Coleoptera: Bostrichidae) and its predator Teretriosoma nigrescens (Coleoptera:Histeridae) in Benin]
,
Seasonal meteorological factors influencing the annual flight cycle ofProstephanus truncatus (Coleoptera: Bostrichidae) and its predator Teretriosoma nigrescens (Coleoptera:Histeridae) in Benin
Studies were carried out between 1992 and 1997 in southwestern Benin to investigate the establishment, spread, and impact of Teretriosoma nigrescens Lewis, a natural enemy of the larger grain borer, Prostephanus truncatus (Horn). Trap data, using the 2-component synthetic aggregation pheromone of...
Borgemeister, C.
,
Djossou, F.
,
Adda, C.
,
Schneider, H.
,
Djomamou, B.
,
Degbey, P.
,
Azoma, B.
,
Markham, R.H.
,
[Establishment, spread, and impact of Teretriosoma nigrescens (Coleoptera: Histeridae), an exotic predator of the larger grain borer (Coleoptera: Bostrichidae) in southwestern Benin]
,
Establishment, spread, and impact of Teretriosoma nigrescens (Coleoptera: Histeridae), an exotic predator of the larger grain borer (Coleoptera: Bostrichidae) in southwestern Benin
Adda, C.
,
Borgemeister, C.
,
Meikle, W.G.
,
Markham, R.H.
,
Olaleye, I.
,
Abdou, K.S.
,
Zakari, M.O.
,
[First record of the larger grain borer, Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae), in the Republic of Niger]
,
First record of the larger grain borer, Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae), in the Republic of Niger