Sampling Phytophagous Thrips on Soybean

Irwin, Michael E.; Yeargan, Kenneth V.

doi:10.1007/978-1-4612-9998-1_13

Cited by 16 publications

(13 citation statements)

References 8 publications

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“…Thrips, particularly Frankliniella intonsa, were observed most frequently in or near the soybean flowers. Thrips are often used as pollinators in soybean breeding in Russia (Abe et al, 2000), and were observed frequently in soybean fields in previous papers (Irwin and Yeargan, 1980;Nakayama and Yamaguchi, 2002;Ray et al, 2003). Although our data don't indicate clearly that thrips are useful pollinators, they were the most plausible suspected pollinators in our field in Tsukuba, Japan.…”

Section: Discussionmentioning

confidence: 46%

Gene flow from GM glyphosate-tolerant to conventional soybeans under field conditions in Japan

Yoshimura

Matsuo

Yasuda

2006

Environ. Biosafety Res.

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Section: Discussionmentioning

confidence: 46%

Gene flow from GM glyphosate-tolerant to conventional soybeans under field conditions in Japan

Yoshimura

Matsuo

Yasuda

2006

Environ. Biosafety Res.

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“…In addition, neonicotinoids are widely used as seed treatments or soil, transplant water or transplant tray-drench applications to control early season pests in wheat, maize, tobacco, peanut, and some vegetable crops, which may be locally abundant in some cotton production areas. In the absence of control, large populations of F. fusca regularly develop on seedling cotton and soybean, 3,6 although those infestations may not cause economic damage on soybean. 8 In winter, F. fusca live primarily on an array of winter annual weeds, many of which are very abundant in and around agricultural fields and along road verges throughout the late fall, winter, and early spring.…”

Section: Discussionmentioning

confidence: 99%

“…Populations of tobacco thrips, Frankliniella fusca (Hinds), resistant to imidacloprid and thiamethoxam seed treatments have become common in nine southern cotton-producing states (AL, AR, GA, LA, MS, NC, SC, TN, VA) of the USA since 2012. 1,2 Frankliniella fusca is a highly polyphagous and mobile pest, with a host plant range encompassing a broad array of crop and non-crop hosts that are common in cotton production agroecosystems, [3][4][5][6][7][8] suggesting strong selection is occurring over broad spatial scales. Recently, the rapid and widespread emergence of neonicotinoid-resistant F. fusca populations was linked to the spatiotemporal patterns of cotton and soybean production across the affected region.…”

Section: Introductionmentioning

confidence: 99%

Stability of neonicotinoid sensitivity in Frankliniella fusca populations found in agroecosystems of the southeastern USA

Chappell

Huseth

Kennedy

2019

Pest Management Science

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BACKGROUND Insecticide resistance arises at a given location in response to selection acting on novel genotypes or standing variation, or allelic migration. Fitness costs of resistance may slow resistance evolution or result in reversion to susceptibility, but consistent and geographically widespread use of insecticides may provide sufficient selection to offset the fitness costs of resistance. Understanding this relationship is important to the success of insecticide resistance management. We report the existence of fitness costs of neonicotinoid resistance in field‐collected populations of the tobacco thrips (Frankliniella fusca), which increasingly challenge upland cotton production in the southeastern USA. RESULTS Populations (14 of 15 in 2015; 4 of 5 in 2016) investigated showed a loss of resistance to imidacloprid after multiple generations without exposure to the insecticide. Populations studied in 2016 were each split into two colonies, and one of each pair was repeatedly exposed to imidacloprid. In three of the four populations that lost resistance, imidacloprid‐exposed colonies lost resistance significantly more slowly than did corresponding unexposed colonies. CONCLUSION For imidacloprid resistance to be broadly increasing in the landscapes of the southeastern USA despite fitness costs of resistance, selection for resistance must be sufficient to overcome the costs. Findings encourage investigation into why costs are overcome in this system, potentially including geographic extent of neonicotinoid use or prevalence of low‐dose exposure. © 2019 Society of Chemical Industry

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“…The nymphs and adults of E. flavescens were counted on the lower surface of the first five leaves, and nymphs and adults of S. dorsalis were sampled from the first three leaves and the bud (Irwin and Yeargan 1980;Roy et al 2009). …”

Section: Methodsmentioning

confidence: 99%

Seasonal incidence and enzyme-based susceptibility to synthetic insecticides in two upcoming sucking insect pests of tea

2011

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Climate change, deforestation and over reliance on chemical pesticides during the last five decades are presumed to have had a significant impact on the incidence and abundance of agricultural pests. The thrips (Scirtothrips dorsalis Hood) and the greenfly (Empoasca flavescens Fabricius), which were previously considered as minor or occasionally as serious pests in localized areas of tea plantations, are now established as regular and at times major pests in tea plantations of North Bengal spread over the sub Himalayan slopes and the adjoining plains of Terai and the Dooars. Tea-planters from different pockets of North Bengal have been repeatedly reporting control failures of these pests with the use of insecticides in recommended dilutions. A study of their seasonal incidence along with activity of detoxifying enzymes was considered. The trend of a recent population study revealed that E. flavescens and S. dorsalis were abundant throughout the year, with peaks during April to June. Abiotic factors such as temperature, rainfall, sunshine hours and relative humidity (afternoon) influenced the population abundance. Insecticideexposed populations showed higher levels of activity of the detoxifying enzymes than those collected from organic plantations and the laboratory-reared populations that had not been exposed to insecticides. Detoxifying enzymes in insecticide-exposed E. flavescens collected from Terai and the Dooars as compared with laboratory control specimens showed 3.0-5.2 and 3.0-9.7-fold increases in general esterases (GEs), 1.5-4.8 and 3.6-5.3-fold increases in cytochrome P450s (CYPs) and 1.2-3.5 and 1.5-2.5-fold increases in glutathione-s-transferases (GSTs), respectively. Similarly, S. dorsalis collected from Terai and the Dooars showed 2.0-6.0 and 2.3-5.6-fold increases in GEs, 1.5-2.3 and 1.6-2.4-fold increases in CYPs and 2.6-3.7 and 2.3-3.6-fold increases for GSTs, respectively. Bands of isozymes of esterase I-VI and I-V were found to be expressed in insecticideexposed specimens whereas a negligible expression was evident for the bands in unexposed E. flavescens and S. dorsalis of organic plantations and laboratory-reared origins, respectively. The data obtained in the present study would be useful in developing the integrated resistance management strategies leading to effective management of the said pests.

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Sampling Phytophagous Thrips on Soybean

Cited by 16 publications

References 8 publications

Gene flow from GM glyphosate-tolerant to conventional soybeans under field conditions in Japan

Gene flow from GM glyphosate-tolerant to conventional soybeans under field conditions in Japan

Stability of neonicotinoid sensitivity in Frankliniella fusca populations found in agroecosystems of the southeastern USA

Seasonal incidence and enzyme-based susceptibility to synthetic insecticides in two upcoming sucking insect pests of tea

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