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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...


Vowotor, K.A.Meikle, W.G.Ayertey, J.N.Borgemeister, C.Markham, R.H.[Intraspecific competition in larvae of the larger grain borer, Prostephanus truncatus (Horn) with maize grains]Intraspecific competition in larvae of the larger grain borer, Prostephanus truncatus (Horn) with maize grains

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)

Human pressure on forest resources in southern Benin has led to a dramatic reduction and disturbance of natural forest patches. The largest remaining forest reserve in southern Benin is the Lama forest, which is known to be a reserve for many endangered species and situated in the boundary betwee...


Nansen, C.Tchabi, A.Meikle, W.G.[Successional sequence of forest types in a disturbed dry forest reserve in southern Benin, West Africa]Successional sequence of forest types in a disturbed dry forest reserve in southern Benin, West Africa

Based on pheromone trap catches, a model of weekly Prostephanus truncatus (Horn) flight activity was generated for southern Benin. Using response surface regression, the following environmental variables were examined: number of rainy days per week, precipitation, minimum and maximum temperatures...


Nansen, C.Korie, S.Meikle, W.G.Holst, N.[Sensitivity of Prostephanus truncatus (Horn) (Coleoptera:Bostrichidae) flight activity to environmental variables in Benin, West Africa]Sensitivity of Prostephanus truncatus (Horn) (Coleoptera:Bostrichidae) flight activity to environmental variables in Benin, West Africa

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

Budgets for palm-oil and palm-alcohol production were constructed to show the economic benefit of each activity to smallholder farmers in southern Benin. The selling prices of oil palms to alcohol distillers, who cut the trees, were approximately equal to the annual fruit revenue for that tree. S...


Meikle, W.G.Gutiérrez, A.P.Herren, H.R.[Decisionmaking by smallholder farmers in an oil plambased economy in southern Benin, West Africa]Decisionmaking by smallholder farmers in an oil plambased economy in southern Benin, West Africa

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

Repeated sampling of rural maize stores in Benin was conducted to evaluate published parameters of a sequential sampling plan for a negative binomial distribution to determine pest status for Prostephanus truncatus (Horn) and Sitophilus zeamais Motschulsky. A computer program was used to rerandom...


Meikle, W.G.Holst, N.Degbey, P.Oussou, R.[An evaluation of sequential sampling plans for the larger grain borer (Coleoptera: Bostrichidae) and the maize weevil (Coleoptera: Curculionidae) and of visual grain assessment in West Africa]An evaluation of sequential sampling plans for the larger grain borer (Coleoptera: Bostrichidae) and the maize weevil (Coleoptera: Curculionidae) and of visual grain assessment in West Africa

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