Studies on the population dynamics of the fruit flies, Anastrepha (Diptera: Tephritidae) associated with mango (Mangifera indica L.) in Costa Rica.
Soto-Manitiu J., Jirón L. F.
Author Affiliation: Museo de Insectos, Escuela de Fitotecnia, Facultad de Agronomia, Universidad de Costa Rica, San José, Costa Rica.
Tropical Pest Management 35 : 425-427
Abstract : A number of observations were carried out on the population dynamics of Anastrepha obliqua, associated with a mango plantation in Orotina, Costa Rica. After 11 months sampling with McPhail traps, 54.64% of adults captured were A. serpentina, 41.73% A. obliqua, 3.56% A. striata and 0.08% A. balloui. The period of maximum abundance of these species coincided with the fruiting season of the respective host plant. A. serpentina coincided with the fruiting of several Sapotaceae, A. obliqua with some Anacardiaceae and A. striata with some Myrtaceae. However all adults from infested mangoes were A. obliqua. The phenology of adult emergence of A. obliqua from the ground was observed in 1986. Most emerged just after the first rains; this coincided with fruiting season, and emergence continued many weeks after the crop was over. To determine the dispersal of A. obliqua, 633 young adults were marked and released in the mango plot. Only one marked adult was recaptured five weeks later. Adults showed a tendency to disperse from the original plot.