Environmental Entomology (1986) 15, 1220-1224
M.A. Riley and R.A. Goyer (1986)
Impact of beneficial insects on Ips spp. (Coleoptera: Scolytidae) bark beetles in felled loblolly and slash pines in Louisiana
Environmental Entomology 15 (6), 1220-1224
Abstract: Ips calligraphus (Germar) (80.2%), I. avulsus (Eichhoff) (11.2%), and I. grandicollis (Eichhoff) (8.2%) infested felled loblolly pine, Pinus taeda L., and slash pine, P. elliottii (Englemann), in Louisiana. Treatments designed to exclude natural Ips spp. predators and parasites were applied over time to infested trees. These temporal exclusion treatments revealed that Ips spp. brood survival decreased 30.8%, while the number of insect predators and parasites found in association with the Ips spp. brood increased 3-fold. Ips spp. brood survival was not affected by host tree species, bark thickness, or tree felling date. Twenty-seven species of insect predators, in 13 families, and 10 species of parasites, in 4 families, were associated with the Ips spp. broods. Predators and parasites composed 98.8 and 1.2%, respectively, of the total beneficial insect complex.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation
