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The pine wood nematode, Bursaphelenchus xylophilus (Steiner 10 males: body length = 576.4 ± 88.16 μm, a = 38.12 ± 5.36, b = 7.83 ± 0.39, c = 23.07 ± 2.59, stylet length = 14.63 ± 1.95 μm, spicules length = 22.5 ± 2.21 μm) were similar to the isolates found in Portugal described by Penas et al.(4) and smaller than described by Mota et al. (3). Molecular diagnosis was done following the protocols recommended by the EPPO (1): (i) Amplification of satellite DNA of B. xylophilus by PCR obtaining fragments of 160, 320, and 480 bp; (ii) PCR amplification of a region of 77 bp satellite DNA of B. xylophilus by Taqman Real Time; and (iii) PCR-restriction fragment length polymorphism of the internal transcribed spacer (ITS) region of Bursaphelenchus spp. nrDNA obtaining the restriction pattern for B. xylophilus. The ITS product amplified by PCR was also sequenced, showing a 99% homology with the sequences of B. xylophilus deposited in GenBank. A sequence of this nematode was submitted to GenBank database and assigned the number HQ646254. On the basis of these diagnostic characteristics, we have confirmed that B. xylophilus is now present in Galicia (northwestern Spain), which is one of the most productive and important region of Spain for forestry. References: (1) EPPO Bull. 39:344, 2009. (2) EPPO Rep. Serv. 3:2010/051, 2010. (3) M. M. Mota et al. Nematology 1:727, 1999. (4) A. C. Penas et al. J. Nematol. Morphol. Syst. 10:137, 2008.
Abelleira et al. (Tue,) studied this question.