Efficacy of layer treatment with methoprene for control of <i>Rhyzopertha dominica</i> (Coleoptera: Bostrychidae) on wheat, rice and maize

Athanassiou, Christos G.; Arthur, Frank H.; Throne, James E.

doi:10.1002/ps.2064

Cited by 38 publications

(34 citation statements)

References 19 publications

(35 reference statements)

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“…Methoprene is environmentally friendly and virtu-ally nontoxic to mammals; it can be applied to grain and water with few application risks. Hence, most studies that have investigated the impact of methoprene on pests have focused on stored product and aquatic insects (Butler et al 2010;Athanassiou et al 2011;Wijayaratne et al 2012). Furthermore, methoprene does not typically affect adults but instead interferes with normal growth and development of immature insects; thus, most previous studies focused on immature insects, and the effects of methoprene on adults and their filial generation have received less attention.…”

Section: Introductionmentioning

confidence: 98%

Effects of Methoprene on Female Reproduction, Longevity and F1 Progeny Development in the Cotton Bollworm MothHelicoverpa armigera(Hübner) (Lepidoptera: Noctuidae)

Wang

Chen²,

Ma³

et al. 2015

African Entomology

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Section: Introductionmentioning

confidence: 98%

Effects of Methoprene on Female Reproduction, Longevity and F1 Progeny Development in the Cotton Bollworm MothHelicoverpa armigera(Hübner) (Lepidoptera: Noctuidae)

Wang

Chen²,

Ma³

et al. 2015

African Entomology

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“…However, with diatomaceous earth (DE) and contact insecticides applied to layers of wheat, R. dominica was able to penetrate through the treated layer, and oviposit in untreated wheat before dying from the exposure to either DE or the contact insecticides (Vardeman et al 2006(Vardeman et al , 2007Athanassiou et al 2009Athanassiou et al , 2011a. When grain protectants are used as a surface treatment to the top layer of a grain mass or untreated wheat is mixed with surface wheat, it is possible for the adults to disperse from the treated wheat.…”

Section: Introductionmentioning

confidence: 98%

Lethal and sub-lethal effects from short-term exposure of Rhyzopertha dominica on wheat treated with Storicide II®

Arthur

2011

J Pest Sci

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Hard red winter wheat was treated at 0 (untreated control), 25, 50, 75, and 100% of the label rate of the insecticide Storicide II Ò , which is chlorpyrifosmethyl and deltamethrin applied at label rates of 3 and 0.5 ppm, respectively. Paired male and female Rhyzopertha dominica F., the lesser grain borer, were exposed at 27°C and 60% RH on wheat treated at each of the five rates above for 2, 4, 8, 16, or 32 h, and then transferred to untreated wheat and held for 1 week at the same environmental conditions. After this 1-week holding period, the parental adults were removed, mortality was assessed, and the wheat was then held for 7 weeks at the same environmental conditions to determine progeny production. As the concentration and exposure interval increased, mortality of both sexes approached 100%, but at the intermediate concentration-time combinations male mortality was greater than female mortality. Progeny production also decreased with increasing concentration of Storicide II Ò as the exposure time increased, with non-linear patterns of decrease at the lower concentrations and time combinations and linear decline at the higher levels of concentration and time. Results seem to indicate greater susceptibility of males to Storicide II Ò , and also show delayed parental mortality from the insecticide exposure and sub-lethal effects of reduced progeny production.

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“…Although methoprene is relatively stable at different temperatures the residual activity and efficacy could be even further enhanced in aeration-cooled grain compared to non-aerated grain when stored under hot ambient conditions in the field [21]. Various laboratory studies that evaluated efficacy of IGRs as aerosols, contact surface treatments, or layer treatments (e.g., top of grain compared to other applications) to control stored product insects and some recent studies have evaluated efficacy of methoprene under field conditions [3,21,22,23,24]. However, there are no scientific field studies that researched the efficacy of IGRs combined with aeration cooling of stored grain.…”

Section: Introductionmentioning

confidence: 99%

Combination of Methoprene and Controlled Aeration to Manage Insects in Stored Wheat

Liu

Arthur

VanGundy³

et al. 2016

Insects

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A commercial formulation of the insect growth regulator methoprene was applied to wheat stored in small bins either alone or in combination with controlled aeration of the bins, to lower grain temperature for insect pest management of stored wheat. Grain temperatures were monitored and modified by a computer-controlled thermocouple system that also activated the aeration system at programmed set-points to move cool ambient air through the grain mass to lower grain temperature. Results from sampling insect populations in experimental storage bins along with laboratory mortality bioassays of insects placed on wheat taken from the bins over the course of the storage period showed that methoprene was very effective in controlling infestation by the externally-feeding stored grain insects Plodia interpunctella (Hübner), the Indian meal moth Tribolium castaneum (Herbst), the red flour beetle, Cryptolestes ferrugineus (Stephens), the rusty grain beetle, and also for the internal-feeding pest Rhyzopertha dominica( Fauvel), the lesser grain borer. Methoprene did not give good control of the internal-feeding pest Sitophilus oryzae (L.), the rice weevil. Aeration alone was somewhat effective in suppressing insect population development, while methoprene alone or when combined with aeration greatly enhanced insect control. Commercial grain grading for industry quality standards at the end of the storage period confirmed the impact of insect suppression on maintaining high quality of the stored wheat. This field experiment shows that methoprene combined with aeration to cool grain can be effective for pest management of stored wheat in the southern plains of the United States of America.

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Efficacy of layer treatment with methoprene for control of Rhyzopertha dominica (Coleoptera: Bostrychidae) on wheat, rice and maize

Abstract: The results suggest that partial layer treatments with methoprene can be used to control R. dominica on maize but may not be effective for control of this species on wheat and rice.

Cited by 38 publications

References 19 publications

Effects of Methoprene on Female Reproduction, Longevity and F1 Progeny Development in the Cotton Bollworm MothHelicoverpa armigera(Hübner) (Lepidoptera: Noctuidae)

Effects of Methoprene on Female Reproduction, Longevity and F1 Progeny Development in the Cotton Bollworm MothHelicoverpa armigera(Hübner) (Lepidoptera: Noctuidae)

Lethal and sub-lethal effects from short-term exposure of Rhyzopertha dominica on wheat treated with Storicide II®

Combination of Methoprene and Controlled Aeration to Manage Insects in Stored Wheat

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