Effects of Reduced Rates of Dipel 4L, Dylox 1.5 Oil, and Dimilin W-25 on
Lymantria dispar
(L.) (Lepidoptera: Lymantriidae), Parasitism, and Defoliation

Ticehurst, Mark; Fusco, Robert A.; Blumenthal, Edward M.

doi:10.1093/ee/11.5.1058

Cited by 13 publications

(4 citation statements)

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“…Operational field trials indicate that use of Btk enhances natural parasitism (Ticehurst et al 1982) .…”

Section: Impurities In Commercial Formulationsmentioning

confidence: 99%

Review of Bacillus thuringiensis var. kurstaki (Btk) for use in forest pest management programs of Ontario - with special emphasis on the aquatic environment / by G.A. Surgeoner and M.J. Farkas.

Farkas¹,

Surgeoner²

1989

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In response to the Ministry of Natural Resources' preparation of Class Environmental Assessment for timber management on crown lands, the Ontario Ministry of the Environment (MOE) commissioned the Environmental Review Of Bacillus thurinqiensis var. kurstaki (Btk) for Use in Forest Pest Management Programs of Ontario With Special Empasis On The Aquatic Environment.. , (1987) during field tests of two Btk formulations (San 41S and Thuricide 32 LV) . The results indicated that infected parasites 3 9 .

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“…Operational field trials indicate that use of Btk enhances natural parasitism (Ticehurst et al 1982) .…”

Section: Impurities In Commercial Formulationsmentioning

confidence: 99%

Review of Bacillus thuringiensis var. kurstaki (Btk) for use in forest pest management programs of Ontario - with special emphasis on the aquatic environment / by G.A. Surgeoner and M.J. Farkas.

Farkas¹,

Surgeoner²

1989

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“…1 (20,11), augmentative releases of the Korean strain of this species have been attempted in both small ( < 3 ha) isolated woodlots and in larger contiguous forested areas following the application of Bt (24,29).…”

Section: Project Componentsmentioning

confidence: 99%

Development and Implementation of a Gypsy Moth Integrated Pest Management Program

Reardon¹,

McManus²,

Kolodny-Hirsc³

et al. 1987

AUF

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The current approach to gypsy moth management in the United States involves applying insecticides to eliminate isolated infestations, and to suppress populations in areas of regulatory concern or where socioeconomic impacts are projected to occur. An alternative approach, integrated pest management, is being implemented over a wide range of ecological, geographic, and land-use areas within a three-county area in Maryland to evaluate the feasibility of managing gypsy moth populations at low levels. This project is structured around a comprehensive biological monitoring system that provides an annual data base on the distribution, density, and trend of gypsy moth populations. This information, in conjunction with ancillary data for landscape features (e.g., soil type, vegetation cover type, and land use) and stand susceptibility to defoliation rating, provides guidelines for prescribing an array of intervention activities. This program also supports ongoing cooperative studies in data-base management, refinement of sampling methods, and evaluation of intervention activities.

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“…In studies of the impact of Bt on parasitized Lepidoptera it has been recognized that the survival of parasitoids is often a function of the host instar they attack and/or emerge from (e.g., Hamel, 1977; Ticehurst et al., 1982; Weseloh & Andreadis, 1982; Wallner et al., 1983). Theoretically, if the parasitoid emerges from the host, or causes the host to stop feeding before the Bt treatment is applied, it would avoid the adverse effects of Bt on its host.…”

Section: Introductionmentioning

confidence: 99%

Strategy for orchard use of Bacillus thuringiensis while minimizing impact on Choristoneura rosaceana parasitoids

Cossentine¹,

Jensen

Deglow

2003

Entomologia Exp Applicata

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Trials were conducted to study how spring Bacillus thuringiensis Berliner subsp. kurstaki treatments on apple may be timed to maximize the survival of parasitoids of the obliquebanded leafroller, Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), found in the southern interior of British Columbia, Canada. Orchard collections verified that second through fourth instar obliquebanded leafrollers were found in varying proportions from pink through the petal fall stage of apple development when spring B. thuringiensis treatments are applied vs. lepidopteran pests. Laboratory‐reared second through fourth instar obliquebanded leafrollers, unparasitized and parasitized by one of three native parasitoid species, were fed untreated apple leaves or leaves treated with B. thuringiensis. The highest mortality of unparasitized obliquebanded leafrollers occurred when fourth instars were exposed to B. thuringiensis‐treated leaves; B. thuringiensis‐induced mortality in the unparasitized second and third instars was less than 50%. The consumption of B. thuringiensis‐treated leaves by host larvae significantly increased the percentage of dead host larvae in all parasitized and unparasitized treatments. However, because of the low susceptibility of this leafroller species to B. thuringiensis, relatively high numbers (38–43%) of three obliquebanded leafroller parasitoid species were able to survive the consumption of B. thuringiensis by second and third instar host larvae. Fourth instar obliquebanded leafrollers were found at the full bloom and petal fall stage of apple development in the orchard, at which time B. thuringiensis treatments are recommended for optimal leafroller control. The highest parasitoid mortality due to host mortality was recorded in Apophua simplicipes Cresson (Hymenoptera: Ichneumonidae) and Macrocentrus linearis (Nees) (Hymenoptera: Braconidae), when the hosts were treated as fourth instars. Both of these parasitoids emerge from fifth and sixth instar obliquebanded leafrollers. Bacillus thuringiensis did not have as negative an impact on Apanteles polychrosidis Viereck (Hymenoptera: Braconidae), which emerges when the host is in the fourth instar. When leafroller mortality and parasitism were combined, the B. thuringiensis treatment did not significantly increase host elimination above that of parasitism alone, except for larvae parasitized by A. simplicipes that were in the fourth instar. The consumption of B. thuringiensis by unparasitized larvae was shown to slow larval development.

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Effects of Reduced Rates of Dipel 4L, Dylox 1.5 Oil, and Dimilin W-25 on Lymantria dispar (L.) (Lepidoptera: Lymantriidae), Parasitism, and Defoliation

Cited by 13 publications

References 0 publications

Review of Bacillus thuringiensis var. kurstaki (Btk) for use in forest pest management programs of Ontario - with special emphasis on the aquatic environment / by G.A. Surgeoner and M.J. Farkas.

Review of Bacillus thuringiensis var. kurstaki (Btk) for use in forest pest management programs of Ontario - with special emphasis on the aquatic environment / by G.A. Surgeoner and M.J. Farkas.

Development and Implementation of a Gypsy Moth Integrated Pest Management Program

Strategy for orchard use of Bacillus thuringiensis while minimizing impact on Choristoneura rosaceana parasitoids

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