Effect of Racemic Disparlure Released from Grids of Plastic Ropes on Mating Success of Gypsy Moth (Lepidoptera: Lymantriidae) as Influenced by Dose and by Population Density

Webb, R. E.; Leonhardt, B. A.; Plimmer, Jack R.; Tatman, K. M.; Boyd, V. K.; Cohen, Dan; Schwalbe, Charles P.; Douglass, Larry W.

doi:10.1093/jee/83.3.910

Cited by 19 publications

(24 citation statements)

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“…A number of other studies also showed decreasing mating success (i.e., proportion of mated females) and male moth captures with increasing dosages of dispalure, from 0 to 700 g AI/ha (Schwalbe & Mastro, 1988;Kolodny-Hirsch & Schwalbe, 1990;Webb et al, 1990;Kolodny-Hirsch & Webb, 1993). A strong negative relationship was observed between pheromone dosage and male moth response to pheromonebaited traps and females.…”

Section: Introductionmentioning

confidence: 81%

Optimization of pheromone dosage for gypsy moth mating disruption

Tcheslavskaia

Thorpe

Brewster

et al. 2005

Entomologia Exp Applicata

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The effect of aerial applications of the pheromone disparlure at varying dosages on mating disruption in low-density gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), populations was determined in field plots in Virginia, USA during 2000 and 2002. Six dosages [0.15, 0.75, 3, 15, 37.5, and 75 g active ingredient (AI)/ha] of disparlure were tested during the 2-year study. A strongly positive dose-response relationship was observed between pheromone dosages and mating disruption, as measured by the reduction in male moth capture in pheromone-baited traps and mating successes of females. Dosages of pheromone ≥ 15 g AI/ha (15, 37.5, and 75 g AI/ha) reduced the mating success of females by >99% and significantly reduced male moth catches in pheromone-baited traps compared to untreated plots. Pheromone dosages <15 g AI/ha also reduced trap catch, but to a lesser extent than dosages ≥ 15 g AI/ha. Furthermore, the effectiveness of the lower dosage treatments (0.15, 0.75, and 3 g AI/ha) declined over time, so that by the end of the study, male moth catches in traps were significantly lower in plots treated with pheromone dosages ≥ 15 g AI/ha. The dosage of 75 g AI/ ha was initially replaced by a dosage of 37.5 g AI/ha in the USDA Forest Service Slow-the-Spread (STS) of the Gypsy Moth management program, but the program is currently making the transition to a dosage of 15 g AI/ha. These changes in applied dosages have resulted in a reduction in the cost of gypsy moth mating disruption treatments.

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Section: Introductionmentioning

confidence: 81%

Optimization of pheromone dosage for gypsy moth mating disruption

Tcheslavskaia

Thorpe

Brewster

et al. 2005

Entomologia Exp Applicata

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“…Similar studies with disparlure applied in plastic laminate tape (plastic rope) showed that doses as high as 250 g/ha were insufficient to disrupt mating in isolated, high-density populations in which pretreatment surveys showed that immature stages of gypsy moths averaged over 40 per burlap-banded tree (Webb et al, 1990). A five-year evaluation of the same technology (50 g dispadure/ ha applied every other year in plastic laminate tapes) demonstrated biological activity for two seasons as measured by reduced mating success and male moth trap capture.…”

Section: Introductionmentioning

confidence: 86%

Control of low-density gypsy moth (Lepidoptera: Lymantriidae) populations by mating disruption with pheromone

Leonhardt

Mastro

Leonard³

et al. 1996

J Chem Ecol

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This four-year study demonstrated that low-density populations of the gypsy moth,Lymantria dispar (L.), were effectively suppressed by annual aerial application of 75 g of racemic disparlure per hectare formulated in plastic laminate flakes. These tests also showed that, when plots were treated with 150 g of pheromone per hectare in 1990 only and left untreated for the following three years, populations continued to be suppressed in 1991-1993 as compared with the controls. Although none of the plots were treated in 1994, population assessment continued and showed that the gypsy moth population density remained low in the plots that had been treated annually for the preceding four years. The laminate flakes released an average of 0.48 g disparlure per day per hectare from each of the two applications in 1990, and 0.72 g per day per hectare from the single application in each of the following three years (1991-1993). Only 27-40% of the applied pheromone dose was emitted during male moth flight.

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“…Many experimental pheromone studies on various lepidopteran pests in the Weld show a negative relationship between population density and success of mating disruption [i.e. Helicoverpa zea in corn (Carpenter et al 1982); Epiphyas postvittana in pine trees (Carpenter et al 1982;Webb et al 1990); Cydia pomonella in apple (Kehat et al 1995;Vickers et al 1998); Lobesia spec. in vineyards (Charmillot and Pasquier 2000;Feldhege et al 1993;Gordon et al 2005;Schmitz et al 1995)].…”

Section: Discussionmentioning

confidence: 99%

Testing mating disruption of the horse chestnut leafminer Cameraria ohridella (Lepidoptera: Gracillariidae) in field tents

2008

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Since the beginning of the invasion of the horse chestnut leafminer, Cameraria ohridella Deschka and Dimic 1986 (Lepidoptera: Gracillariidae), into Europe over 20 years ago the damage to white Xowering horse chestnut trees, Aesculus hippocastanum L (Sapindales: Hippocastanaceae) has remained extensive. This study evaluates the possible use of pheromone mating disruption as a control option against the horse chestnut leafminer. The heterogeneous distribution of ornamental trees in parks and gardens requires a diVerent approach to evaluate pest control than in homogeneous crop Welds, orchards or plantations where mating disruption is usually applied. For this reason we set up Weld experiments with host trees of the same age and size in Weld tents with a deWned number of leafminers in two diVerent densities. In the Wrst experiment the eVective quantity of newly developed C. ohridella pheromone dispensers was tested by recapturing males using traps baited with virgin females. Ninety-Wve percent less males were captured if three or more dispensers were positioned at a 4 m radius around the outside of an experimental tent. This set up was then used in the second experiment where male and female leafminers were released into Weld tents in order to assess the eVect of pheromone on the reduction of leaf mining damage. Surprisingly, the pheromone dispensers were found to have no eVect on the number of leaf mines at either low or high leafminer densities. Mating sites of the horse chestnut leafminer, multiple matings and distribution of pheromone dispenser are discussed as possible factors inXuencing the outcome in this study.

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Effect of Racemic Disparlure Released from Grids of Plastic Ropes on Mating Success of Gypsy Moth (Lepidoptera: Lymantriidae) as Influenced by Dose and by Population Density

Cited by 19 publications

References 0 publications

Optimization of pheromone dosage for gypsy moth mating disruption

Optimization of pheromone dosage for gypsy moth mating disruption

Control of low-density gypsy moth (Lepidoptera: Lymantriidae) populations by mating disruption with pheromone

Testing mating disruption of the horse chestnut leafminer Cameraria ohridella (Lepidoptera: Gracillariidae) in field tents

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