Population Activity and Control of the Olive Fruit Fly in Olive Orchards using Food Attractants and Pheromone Traps in Arid Region (Algeria)
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Keywords:
Bactrocera oleae, McPhail-type traps, pheromone, food attractants, infestation, control, arid regionAbstract
The olive fruit fly, Bactrocera oleae, is one of the most destructive pests of olive orchards worldwide, causing substantial economic losses through reduced yield and fruit quality. Effective management of this pest remains a major concern for olive growers due to its high reproductive potential and rapid population buildup under favorable conditions.The present study was carried out in three orchards located in the arid region of M’Sila, Northeast Algeria, from August to December 2023. The objectives were to monitor population dynamics, assess infestation levels, and evaluate control strategies against the olive fruit fly. Adult activity was monitored using McPhail traps baited with food attractants (3% aqueous diammonium phosphate and 3% aqueous ammonium bicarbonate solutions). Pheromone traps were simultaneously deployed for comparative assessment of trapping efficiency. The first adults emerged at the end of August, and the pest continued to emergeuntil the end of December. The first population development peakwas observed in mid-October in all three orchards.Three generations of B. oleae appeared in the M’Sila area. The infestation rates of the pest were38.5% (at Ouled Mansour) and 31.5% (at District Ksob and Ouled Sidi Amor). The McPhail traps (+ 3% ammonium bicarbonate) caught more flies than the McPhail traps (+ 3% diammonium phosphate) and Pheromone traps (Lure - Russell IPM). At every orchard olive site, were observed significant interactions between the week and the trap were observed for the total, male, and female flies. The activity of the fruit flies depended on environmental conditions. Traps baited with ammonium bicarbonate attracted more females.
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