Vector-Nematode Relationships and Epidemiology in Pine Wilt Disease
Pine wilt is a serious, infectious disease of susceptible pines, occuring in North America, East Asia, and Portugal (Yang and Wang 1989; Kishi 1995; Mota et al. 1999). The disease is caused by the pine wood nematode (PWN), Bursaphelenchus xylophilus, and is vectored by cerambycid beetles in the genus Monochamus (Kiyohara and Tokushige 1971; Mamiya and Enda 1972; Linit 1988; Fig. III.7). Monochamus beetles deposit their eggs in PWN-killed trees. The PWN reproduces in such trees and adult beetles acquire the nematode when they emerge from such dead trees, beginning another cycle of the disease.
KeywordsDiseased Tree Eradication Rate Dead Tree Tree Mortality Transmission Curve
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