A Survey for Bursaphelenchus spp. in Pine Forests in Norway

Oxford

1988

S. 353-363

3 Abb., 1 Tab., 27 Lit. Ang., En, Zfsg. En, Fr

Unselbständiges Werk

200032478

Wood samples from pine trees were taken from 429 sites throughout Norway. The samples were selected as being either from (1) healthy trees, (2) trees suffering from stress, either physical or pathological or (3) dead trees. Nematodes were recovered from 39% of samples, most from dead wood and least from healthy trees. Species of Bursaphelenchus were recovered from 12% ofdead trees and 5% of stressed trees, but were never found in healthy wood. B. mucronatus was found at just one site and in this sample it was associated withMonochamus sutor, only one of two sites at which the beetle was detected. Base d on the information gained from the survey and from other sources, an assessment is made of the risk of introduction of B. xylophilus from outside Europe on imported woods and its survival, spread and disease potential in European forests.