Monitoring of insecticide resistance in Spodoptera litura (Lepidoptera: Noctuidae) from four districts of Punjab, Pakistan to conventional and new chemistry insecticides

Saleem, Muhammad Abdullah; Hussain, Dilbar; Ghouse, Ghulam; Abbas, Muneer; Fisher, Susan W.

doi:10.1016/j.cropro.2015.08.024

Cited by 92 publications

(51 citation statements)

References 18 publications

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“…Spodoptera litura is known as one of the most severe polyphagous insects in the world . The spread of S. litura has led to the use of synthetic insecticides, such as organophosphates, organochlorines, carbamates and pyrethroids, for the protection of crops from insect damage, as these compounds are convenient, fast acting and easy to handle . The use of chemical control agents has led to a dramatic improvement in the quality of agricultural products.…”

Section: Introductionmentioning

confidence: 99%

“…1 The spread of S. litura has led to the use of synthetic insecticides, such as organophosphates, organochlorines, carbamates and pyrethroids, for the protection of crops from insect damage, as these compounds are convenient, fast acting and easy to handle. 2,3 The use of chemical control agents has led to a dramatic improvement in the quality of agricultural products. However, this issue has been a great concern because of the toxicity of the insecticide residues to humans, nontarget animals and the environment.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of thymyl esters and their insecticidal activity against Spodoptera litura (Lepidoptera: Noctuidae)

Tharamak

Yooboon

Pengsook

et al. 2019

Pest Management Science

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BACKGROUND Thymol, a natural phenolic monoterpene originating from Thymus vulgaris, is recognized as a safe and potent botanical insecticide to many insects. The structural modification of thymol into thymyl esters is a potential approach for the development of novel insecticides, which showed more toxicity than thymol. However, there are no reports on the insecticidal activity of thymyl esters to control Spodoptera litura. RESULTS Thymol was structurally modified into ten thymyl esters by esterification using a new reagent, PPh3/Br3CSO2Ph. The insecticidal activity of these compounds was examined against the second instars of Spodoptera litura using a topical application. Among the ten thymyl esters evaluated, thymyl cinnamate was the most toxic with LD50 = 0.41 and 0.34 μg/larva after 24 and 48 h posttreatment, respectively. In addition, thymyl cinnamate‐treated larvae showed increasing carboxylesterase and acetylcholinesterase activities in vivo experiment, whereas glutathione S‐transferase activity showed no significant difference. CONCLUSION Thymyl cinnamate were first reported to exhibit toxicity against S. litura 2.41–2.46 fold more efficient than thymol. However, the detailed biochemical interactions are necessary for further development of novel insecticides. © 2019 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of thymyl esters and their insecticidal activity against Spodoptera litura (Lepidoptera: Noctuidae)

Tharamak

Yooboon

Pengsook

et al. 2019

Pest Management Science

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“…These results are very meaningful for integrated pest management programs, considering that deleterious effects in the early stages of S. frugiperda caterpillar development reduce crop losses (SALEEM et al, 2016;SANTOS et al, 2016). Therefore, our investigation about the potential of additive mixtures is essential for the management of S. frugiperda, which may have economic implications for maize producers as well as for producers who cultivate other crops susceptible to this pest.…”

Section: O R + T R I a Z O P H O S C O R + C H L O R P Y R I F O S mentioning

confidence: 95%

“…The continuous and indiscriminate use of these products has favored the emergence of resistant populations (OMOTO; RODRIGUEZ, 2001; RÍOS-DÍEZ; SALDAMANDO -BENJUMEA, 2011;SALEEM et al, 2016). Among the main alternatives, it is worth mentioning the use of botanical insecticides (FAZOLIN et al, 2016;SANTOS et al, 2016) and transgenic crops, although there are historical reports on S. frugiperda-resistant populations for the latter (SANTOS-AMAYA et al, 2015;HORIKOSHI et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Potentiation of Copaíba Oil-Resin With Synthetic Insecticides to Control of Fall Armyworm

et al. 2017

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-The control of Spodoptera frugiperda (J. E. SMITH) (Lepidoptera: Noctuidae) has been carried out mainly with pyrethroids and organophosphates insecticides. The continuous and indiscriminate use of synthetic insecticides, for decades, has led to the selection of resistant populations and has caused concerns for human health and the environment. An alternative is the use of botanical insecticides, including through the mixtures with synthetic insecticides. This study aimed to investigate the toxicity of copaiba oil-resin mixtures (COR) with deltamethrin, beta-cyfluthrin, beta-cypermethrin, methomyl, triazophos and chlorpyrifos for S. frugiperda. Bioassays were performed in the laboratory using newly hatched caterpillars on a contaminated surface (filter paper). Initially, concentration-mortality curves were established for each insecticide and COR. Based on the results, experiments were conducted to verify the effect of the COR mixtures with synthetic insecticides in the proportions of 1:1 (LC 25 + LC 25 ) on larvae of S. frugiperda. Additionally, COR concentration-response curves were established by adding 1/8 of the recommended rate of each insecticide. Notably, the use of this concentration for all insecticides was previously determined in bioassays, and no significant toxicity was found for S. frugiperda caterpillars. It was found that the toxicity of COR increased substantially by adding synthetic insecticides, especially with lower mixtures with beta-cypermethrin, methomyl and triazophos.Keywords: Bioinsecticide. Additive effect. Synergism. Corn plague. Integrated pest management. POTENCIALIZAÇÃO DO ÓLEO-RESINA DE COPAÍBA COM INSETICIDAS SINTÉTICOS PARAO CONTROLE DA LAGARTA-DO-CARTUCHO RESUMO -O controle de Spodoptera frugiperda (J. E. SMITH) (Lepidoptera: Noctuidae) tem sido realizado principalmente com inseticidas piretróides e organofosforados. O uso contínuo e indiscriminados de inseticidas sintéticos, durante décadas, tem ocasionado a seleção de populações resistentes, bem como preocupações em relação à saúde humana e ao meio ambiente. Uma alternativa é o emprego de inseticidas botânicos, inclusive por meio de misturas com inseticidas sintéticos. Assim, este trabalho teve por objetivo investigar a toxicidade de misturas do óleo-resina de copaíba (ORC) com os inseticidas deltametrina, beta-ciflutrina, beta-cipermetrina, metomil, triazofós e clorpirifós para S. frugiperda. Foram realizados bioensaios em laboratório utilizando-se lagartas recém-eclodidas em superfície contaminada (papel filtro). Inicialmente, foram estabelecidas curvas de concentração-mortalidade para cada inseticida e para o COR. A partir dos resultados obtidos foram realizados bioensaios para verificar o efeito das misturas do ORC com os inseticidas sintéticos nas proporções de 1:1 (CL 25 + CL 25 ) sobre lagartas de S. frugiperda. Adicionalmente, foram estabelecidas curvas de concentração-resposta do ORC adicionando-se 1/8 da dose comercial de cada inseticida. Vale destacar que o uso desta fração para todos os inseticidas foi d...

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“…9 De Ros 34 and co-workers estimated that 13.7% and 6.7% of potential revenue losses would occur 35 annually without and with management of SWD, respectively, in the small fruit industry at 36 Trento, Italy. 10 And, among the management strategies, the costs for insecticides occupied 37 0.25% of potential annual revenue (ca €60,000) . 10 …”

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confidence: 99%

Insecticidal and Enzyme Inhibitory Activities of Sparassol and Its Analogues against Drosophila suzukii

Kim¹,

Jang²,

Lee

et al. 2016

J. Agric. Food Chem.

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Drosophila suzukii is an economically important pest in America and Europe as well as in Asia. Sparassol and methyl orsellinate are naturally produced by the cultivating mushrooms Sparassis cripta and Sparassis latifolia. Fumigant and contact toxicities of synthetic sparassol and its analogues, methyl orsellinate and methyl 2,4-dimethoxy-6-methylbenzoate (DMB), were investigated. Negligible fumigant activity was observed from the tested compounds. However, DMB showed the strongest contact toxicity, followed by sparassol and methyl orsellinate. The possible modes of action of the compounds were assessed for their acetylcholinesterase (AChE)- and glutathione S-transferase (GST)-inhibiting activities. AChE activity was weakly inhibited by methyl orsellinate and DMB, but GST was inhibited by sparassol, methyl orsellinate, and DMB. Thus, DMB could be a promising alternative to common insecticides as it can be easily synthesized from sparassol, which is the natural product of Sparassis species. Sparassis species could be an industrial resource of DMB.

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Monitoring of insecticide resistance in Spodoptera litura (Lepidoptera: Noctuidae) from four districts of Punjab, Pakistan to conventional and new chemistry insecticides

Cited by 92 publications

References 18 publications

Synthesis of thymyl esters and their insecticidal activity against Spodoptera litura (Lepidoptera: Noctuidae)

Synthesis of thymyl esters and their insecticidal activity against Spodoptera litura (Lepidoptera: Noctuidae)

Potentiation of Copaíba Oil-Resin With Synthetic Insecticides to Control of Fall Armyworm

Insecticidal and Enzyme Inhibitory Activities of Sparassol and Its Analogues against Drosophila suzukii

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