Article Figures & Data
Figures
- Fig. 1.
Adult pine sawyer beetle (Monochamus alternatus) emerging from pine tree (Photo courtesy of Y. Mamiya).
- Fig. 2.
Distribution of pine wilt in the United States. Each shaded state indicates that one or more confirmed examples of dead pine trees infected with pine wilt nematodes have been recorded in that state.
Tables
- Table 1.
Species of conifers killed by pine wilt disease in the U.S. as of June, 1981 (compiled by K. Robbins, U.S. Department of Agriculture, Forest Service, S. & P.F., St. Paul, MN)
Pine Species No. of Counties States Pinus sylvestris 108 AR, DE, IL, IN, IA, KS,
KY, MD, MN, MO, NJ,
NY, OH, OK, TN, VT,
VA, WV, WlP. resinosa 27 DE, IL, IN, IA, OH, TN, VT, WV, Wl P. taeda 23 AL, DE, FL, IL, LA, MD, MS, NO, TN, TX, VA P. nigra 21 IL, IN, IA, KY, MD, MN, MO, PA, TN, Wl P. strobus 20 CT, DE, IL, IA, KY, MD, Ml, MN, MO, NE, NC, TN, VA, WV, Wl P. thunbergii 18 AR, DE, MD, MO, NJ,
NY, OK, VAP. elliottii 12 FL, LA The following species in 10 counties or less: P. banksiana, P. cembra, P. clausa, P. contorta var. murrayana, P. echinata, P. halepensis, P. mugo, P. palustris, P. ponde, P. ponderosa, P. radiata, P. rigida, P. virginiana, Larix laricina, L. decidua, Abies balsamea, Picea spp.(2), Cedrus deodora, C. atlantica.
Data are assembled as counties from which the disease has been reported and nematodes have been identified as B. xylophilus. The prevalence within counties is not recorded.
- Table 2.
Number of dead seedlings of various pine species 53-56 days after inoculation with Bursaphelenchus xylophilus.
Numbers of nematodes inoculated Species 0 1000-2000 20,000 Susceptible Monterey (P. radiata) 0/7a 11/15 2/2 Sugar (P. lambertiana) 0/5 7/11 1/2 Scotch (P. sylvestris) 0/4 3/5 1/2 Shortleaf (P. echinata) 0/3 3/5 1/1 Intermediate Western white (P. monticola) 0/5 5/12 1/2 Red (P. resinosa) 0/5 3/10 2/2 Resistant Ponderosa (P. ponderosa) 0/4 2/9 1/2 Lodgepole (P. contorta) 0/4 1/6 0/2 Southwestern white (P. strobiformis) 0/6 2/14 2/2 Eastern white (P. strobus) 0/4 0/5 2½2 Jeffrey (P. jeffreyi) 0/4 0/10 0/2 ↵a Number of seedlings dead/number inoculated.
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