Survey on potential vectors of Bursaphelenchus xylophilus in Portugal
In March 1999, Bursaphelenchus xylophilus (EPPO A1 quarantine pest) was reported for the first time in Portugal, on dying Pinus pinaster near Setúbal (see EPPO RS 99/152). Surveys have showed that the infestation is limited to the Setúbal Peninsula and its surroundings. Preliminary studies were done to identify potential insect vectors. In the infested area (near Pegões), mature Pinus pinaster trees were felled. All adult insects present were collected and identified. Wood with immature stages was kept in controlled conditions allowing adult emergence. A total of 1367 specimens were collected (21 species belonging to 6 families). No scolytid beetle was found to carry B. xylophilus, which is consistent with other studies made in Japan and USA. Similarly, 7 cerambycids and all the buprestids and curculionids collected did not carry B. xylophilus. Only Monochamus galloprovincialis (Coleoptera: Cerambycidae) was found associated with B. xylophilus. The number of nematodes carried by individuals of M. galloprovincialis was less than that is carried by the most efficient vectors of B. xylophilus in other parts of the world (M. alternatus in Japan, and M. carolinensis in USA).
Sources
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Sousa, E.; Naves, P.; Bonifácio, L.; Bravo, M.A.; Penas, A.C., Pires, J.; Serrão, M. (2002) Preliminary survey for insects associated with Bursaphelenchus xylophilus in Portugal.
Bulletin OEPP/EPPO Bulletin, 32(3), 499-502.
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