Fig.
4 . Parasite ENMs reflect host abiotic tolerances. A-D) Distribution of
environmental values for grid cells in core habitat (habitat suitability
≥ 0.5) for ENMs based on subsets on occurrence records on different
hosts. E) Habitat suitability (HS) as a function of combined host
productivity (yield per hectare) at locations of maize-, millet-, and
sorghum-parasitizing S. hermonthica from natural history
observations. Curves were fit using local polynomial regression.
HS peaks in locations of higher productivity for parasites of maize
compared to millet or sorghum. F) Host specialization measured as the
Paired Difference Index (PDI) for n = 25 S. hermonthicapopulations tested for emergence in previous studies. Shaded areas in
(E) and (F) indicate 90% confidence intervals. Ann. Rainfall: annual
rainfall (mm/yr); Mean Temp. Wet. Q.: mean temperature of the wettest
quarter (°C); soil N: soil nitrogen (g/kg); clay: clay fraction (weight
%)