A survey in 5 geographic blocks of North Carolina indicated that an average of 24% of the brood of Dendroctonus frontalis Zimmerman had been parasitized and preyed upon by zoological agents. The effeet of these agents was assessed and compared during 3 years, in 3 attack stages on the tree, in 3 tree species, and in 3 sections of the tree. The more effective predatory agents were woodpeckers, the clerid Thanasimus dubius (F.), and an anthocorid, Scoloposcelis mississippensis Drake & Harris. Of several parasites, Roptrocerus xylophagorum Ratzeburg and Coleoides pissodes Ashmead contributed most to total mortality.
No takes yet. Share an insight, caveat, or question.
Gordon E. Moore (1972) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: