UNIDAD ASOCIADA "SISTEMAS AGROFORESTALES": ESTACIÓN FITOPATOLÓXICA DO AREEIRO - MISIÓN BIOLÓGICA DE GALICIA
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UNIDAD ASOCIADA "SISTEMAS AGROFORESTALES": ESTACIÓN FITOPATOLÓXICA DO AREEIRO - MISIÓN BIOLÓGICA DE GALICIA |
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| Home » Publications » Papers » 2002 |
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Fourth International
Congress of Nematology, Tenerife 2002
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| Survey of the pine wilt nematode and its vector insects in the autonomic community of Galicia, northwestern Spain. ABELLEIRA, A.¹, M. ESCUER², J.P. MANSILLA¹, M. ARIAS², A. BELLO² 1 Estación Fitopatolóxica do Areeiro, Excma. Diputación Provincial de Pontevedra, Subida a la Robleda s/n, E-36153 Pontevedra, Spain |
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ABSTRACT: Surveys have been carried out to detect Bursaphelenchus spp. in the Galician Community because the pine wilt nematode B.xylophilus was reported in Portugal. Forest areas in this region represent almost 12% of the forest areas in Spain, with conifers at 7% and Pinus pinaster at over 25%. Besides, Galicia is one of the main routes in Spain for imported timber. Several samplings were taken between 1999-2001. The first time, 1,249 samples were collected from pine trees with or without symptoms, taken every 5 km2. The other samplings were gathered according to EC rules. Two thousand, one hundred and seventy-nine (2,179) samples were analysed from pine trees, sawmills and imported wood. Species were identified mainly on the basis of morphometric characteristics and, when necessary, by PCR-RFLP techniques. Four species of Bursaphelenchus were found: (1) B. eggersi in four samples from P. pinaster and P. radiata with symptoms of declining, (2 & 3) B. sexdentati and B. cf. eremus, once each, associated to a declining pine tree close to sawmills, and (4) B. mucronatus at four sawmills on P. pinaster, imported timber from the Ukraine and France. The vector insect for B. xylophilus, Monochamus galloprovincialis, was also collected on imported wood from sawmills. |
