RT Journal Article T1 Vast gene flow among the spanish populations of the pest Bactrocera oleae (Diptera, Tephritidae), phylogeography of a metapopulation to be controlled and its mediterranean genetic context A1 Lantero, Esther A1 Matallanas, Beatriz A1 Ochando González, María Dolores A1 Callejas Hervás, Carmen AB Spain is the leading producer of olives and olive oil. Ninety-five percent of world production originate from Spain and other regions of the Mediterranean Basin. However, these olive-growing countries face a major problem, the harmful fly Bactrocera oleae, the main pest of olive crops. To improve its control, one of the challenges is the further knowledge of the species and populations dynamics in this area. A phylogeographic work is necessary to further characterise the levels and distribution patterns of genetic diversity of the Spanish populations and their genetic relationships with other Mediterranean populations. A 1151 bp fragment of the mitochondrial cytochrome oxidase subunit I (COI) gene has been analysed in over 250 specimens of the six main Mediterranean countries via sequencing. Genetic diversity parameters were high; 51 new haplotypes have been identified showing a geographical pattern across the Mediterranean area. The data revealed that olive fruit fly populations have been long time established in the Mediterranean Basin with two genetic groups. Gene flow seems to be the main process in shaping this genetic structure as well as fly’s colonisation routes that have paralleled those of the olive tree. PB MDPI YR 2022 FD 2022-07-17 LK https://hdl.handle.net/20.500.14352/88276 UL https://hdl.handle.net/20.500.14352/88276 LA eng NO Ministerio de Ciencia e Innovación (MCINN) NO Universidad Complutense de Madrid-Banco de Santander DS Docta Complutense RD 25 abr 2025