Nematodes are the most abundant metazoans, comprising more than 80% of all animals alive today. Since 1743, when Needham (Needham, 1743) described the first nematode, approximately 20,000 - 30,000 species have been named, with estimates of species remaining to be described ranging from 100,000 to 1 million (Blaxter, 2004; De Ley, 2000). Unfortunately, the taxonomic community is woefully inadequate for this ta...
The 75 valid species of the genus Bursaphelenchus are listed together with their synonyms. Diagnostic characters and their states are discussed and illustrated. Tabular and traditional text keys are provided for the genus. Two new subspecies are proposed to distinguish populations of B. piniperdae and B. poligraphi, as described by Rühm (1956), from the original descriptions of these species published by Fuchs ...
The pinewood nematode (PWN) B. xylophilus occurs widely in North America and East Asia and is a quarantine pest for Europe. However, recently it was detected in Portugal (Mota et al., 1999) where it may have been introduced on wood imported from China or Russia. Russia exports over 40x106 m3 of wood products per year, most of which to Europe. Officially the PWN is absent in Russia but recently, Braasch et al. (...
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