RT info:eu-repo/semantics/article T1 Pinus pinea: a natural barrier for the insect vector of the pine wood nematode? A1 Halder, Inge van A1 Sacristán Velasco, Alberto A1 Martín García, Jorge A1 Pajares Alonso, Juan Alberto A1 Jactel, Hervé K1 Monochamus galloprovincialis K1 Bursaphelenchus xylophilus K1 Pinus pinaster K1 Stone pine K1 Umbrella pine K1 Repellent K1 Mixed forests K1 3106 Ciencia Forestal AB Key message:In mixed stands of Pinus pinaster and Pinus pinea, fewer insect vectors of the pinewood nematode (PWN) were captured than in pure P. pinaster stands. This finding has practical implications for PWN disease management, including the recommendation to improve the diversity of maritime pine plantations and to conserve stone pines in infected areas.Context:The PWN is an invasive species in European pine forests, being vectored by the longhorn beetle Monochamus galloprovincialis. The presence of less preferred host trees may disrupt the insect vector dispersal and slow the spread of the disease.Aims:The aim of the study was to compare the abundance of M. galloprovincialis in pure stands of Pinus pinaster, a preferred host tree, pure P. pinea stands, a less preferred host, and mixtures of these two species.Methods:We selected 20 mature pine stands varying in % P. pinaster and % P. pinea in Spain. In each stand, we installed 3 pheromone traps to catch M. galloprovincialis. We related trap catches to stand and landscape composition.Results:The level of capture of M. galloprovincialis was highest in pure P. pinaster stands and decreased with increasing proportion of P. pinea.Conclusions:The presence of stone pine mixed with maritime pine significantly reduces the local abundance of the PWN insect vector. The most plausible mechanism is that P. pinea emits odors that have a repulsive effect on dispersing beetles. PB BMC SN 1286-4560 YR 2022 FD 2022 LK https://uvadoc.uva.es/handle/10324/77022 UL https://uvadoc.uva.es/handle/10324/77022 LA eng NO Annals of Forest Science, 2022, vol. 79, art. 43 NO Producción Científica DS UVaDOC RD 02-ago-2025