Biological control of the mango scale, Aulacaspis tubercularis, in South Africa.
Daneel M. S., Dreyer S.
Author Affiliation: Institute for Tropical and Subtropical Crops, Private Bag X11208, Nelspruit 1200, South Africa.
Yearbook - South African Mango Growers' Association 18 : 52-55
Abstract : The mango scale, Aulacaspis tubercularis, is a serious pest on mango especially on the late cultivars. During the past three years, two biological control agents, an Aphytis sp., a parasitoid and Cybocephalus binotatus, a nitidulid beetle, were released in several mango producing areas. Results showed that both agents had established well in the release sites as well as in surrounding orchards. During the past season, beetles were released in higher numbers in several locations. Observations indicated that although C. binotatus is a high density feeder, relatively low scale numbers are sufficient for the survival of this predator, even during winter. It was also found that although C. binotatus prefers the mango scale, it will also prey on other scale insects to ensure its survival. It is therefore concluded that both these biocontrol agents could make a significant contribution towards the success of an IPM programme in this crop, provided that toxic chemicals for the control of other pests and diseases are selected with care and used judiciously.