GLOBAL POTENTIAL DISTRIBUTION OF EUROPEAN LONGIDORID VIRUS-VECTOR NEMATODES

The distribution of virus-vector nematodes has been studied in detail in Europe. The resulting maps were used to determine the extremes of t he European geographical range of Longidorus elongatus and Xiphinema d iversicaudatum. The CLIMEX computer programme was used to fit a model to the known European distributions of these nematode species and proj ect these to ascertain their potential world distribution. Implication s for the application of the CLIMEX model to refine quarantine regulat ions for other plant-parasitic nematodes are discussed.