Incidence of Cereal Stemborer Parasitoids and Establishment of Cotesia flavipes (Hymenoptera: Braconidae) in Eastern Uganda
Ohio State University
Makerere University, Namulonge Agricultural and Animal Research Institute (NAARI) (Uganda);International Centre of Insect Physiology and Ecology (ICIPE) (Kenya)
S. Kyamanywa, T. Matama-Kauma, J. Ogwanga (Uganda); H. Wilson (US)
Maize productivity in Uganda is constrained by insect pests among other factors. The lepidopterous stalk borers are the most damaging pests on maize in Uganda. A study was conducted in two districts (Iganga and Kumi) of Eastern Uganda to investigate establishment of the exotic parasitiod Cotesia flavipes and the impact of both the local and exotic parasitoids on stalk borer population in Eastern Uganda.
To investigate establishment of the exotic parasitiod Cotesia flavipes and the impact of both the local and exotic parasitoids on stalk borer population in Eastern Uganda.
Results so far obtained indicate that Chilo partelus was the dominant stem borer species followed by B. fusca. Larval parasitism by a local parasitiod, Cotesia sesamia was low (7.7%) and it occurs in very low populations. Therefore if it's to be utilised in the control of B. fusca, it requires augmentation. The introduced parastiod, C.flavipes had a higher parasitism of 30.3% in Kumi and 7% in Iganga. This suggests that C. flavipes is a promising parastiod for C. partelus, it is very likely to established in Eastern Uganda.