Olive Landscape Affects Bactrocera oleae Abundance, Movement and Infestation

The economic importance of Bactrocera oleae (Rossi) and the problems associated with insecticides make necessary new management approaches, including deeper biological knowledge its relationship landscape structure. Landscape complexity reduces B. abundance in late summer–autumn areas high dominance olive groves, but effect structure spring less dominated by groves has not been studied. It is also unknown whether insect disperses from using other land uses as a refugee summer. This work evaluates on fruit fly movement autumn, infestation central Spain, an area where crop does dominate landscape. A cost–distance analysis used to evaluate fly, especially trying know insects move away results indicate that consistently lower complex landscapes scrubland (CAS), patch richness (PR) Simpson diversity index (SIEI), low grove (CAO). shows moves mainly spring, amongst there no evidence than serve summer refuge. Olive decreased decreasing CAO increasing CAS SIEI, accordingly abundance. Thus, mixing uses, which are source flies, can help improve control this important pest.