Index of infestation and diversity of fruit-flies in exotic hosts native to the fruitculture area in Anagé, Bahia, Brazil.
Sá R. F. de, Castellani M. A., Nascimento A. S. do, Brandão M. H. da S. T., Silva A. N. da, Pérez-Maluf R.
Author Affiliation: Agência Estadual de Defesa Agropecuária da Bahia - ADAB, Rua Teodoro Sampaio, 423, 45010-140 Vitória da Conquista (BA), Brazil.
Bragantia 67 : 401-411
Abstract : Fruit flies (Diptera: Tephritidae) are the main hindrance for mango exportation in the fruiticulture areas of the Southwestern Region of Bahia. Experiments were conducted to study the indices of infestation and diversity of fruit flies in the fruiticulture area of Anagé, Bahia, Brazil, in 2004 and 2005, to obtain subsidies to the integrated management of these pests in mango in this region. The studies were conducted in the municipalities of Anagé, Belo Campo and Caraíbas. Fruit sampling from 21 native and exotic vegetable species were analysed for identification of species of associated fly species. Infestation indices in fruit weight (kg) and number of puparia were estimated. The obtained results demonstrated that the highest infestation indices, in puparia/fruit kg, occurred in Spanish prune (Spondias purpurea) with 61.3, juá (Ziziphus joazeiro) with 38.3 and umbu (Spondias tuberosa) with 33.1, which were considered primary hosts of Anastrepha fraterculus and A. obliqua. On the other hand, infestation, in puparia/kg of sampled fruit, occurred in Spanish prune (0.9 puparia/kg), umbu (0.7 puparia/kg) and cajarana (Spondias sp.) with 0.2 puparia/kg. Based on larval monitoring and under the conditions of the fruiticulture area in Anagé, the occurrence of the following species were recorded, i.e. Anastrepha fraterculus, A. obliqua, A. dissimilis, A. amita, A. distincta, A. sororcula, A. zenildae and Ceratitis capitata. For the first time, the following bitrophic associations were noted: juá with A. fraterculus, A. obliqua, A. dissimilis and A. distincta; and umbu with A. amita and A. sororcula.