Efficacy of Certain Pesticides Against Larvae of Tomato Leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

Radwan, Eman M. M.; Taha, Hanan S.

doi:10.21608/eajbsc.2017.13675

Cited by 4 publications

(4 citation statements)

References 22 publications

(27 reference statements)

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“…They found that some proteins were either lost or expressed with different densities. In addition, in treated larvae of Tuta absoluta with phenthoate, imidacloprid, and dinotefuran, Radwan and Taha [48] found a correlation between the loss of various proteins and the reduction of band intensity when using SDS PAGE. In addition, Farag et al [49] observed the disappearance of normal protein bands in the treated Cx.…”

Section: Discussionmentioning

confidence: 99%

The Proficiency of Silver Nanoparticles in Controlling Cotton Leafworm, Spodoptera Littoralis (Boisd.), Under the Laboratory Conditions

Abdou

Zyaan

2023

Egyptian Journal of Zoology

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A new control strategy is required to face the resistance of the cotton leafworm, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae), to chemical insecticides, and to decrease the pollution of the environment. Silver nanoparticles (AgNPs) were used to overcome these problems and to control S. littoralis at the immature stage. AgNPs were prepared by the reduction method. The prepared AgNPs were sphere-shaped with an average diameter of 20.73 nm. Several concentrations of AgNPs (50, 100, 200, 400, and 800 ppm) were used as insecticides against the third instar larvae of S. littoralis under laboratory conditions. The feeding treatments and adsorption via the integument produced malformations and morphological changes in the treated S. littoralis larvae. The larvicidal effect of AgNPs recorded LC50 equal to 224.8 ppm after 14 days of the application. Weight loss in the larvae and the pupae after treatment was significant with averages 47.13% and 60.41%, respectively. The treatment produced malformations in the shape and size of larvae and pupae. Some metal-detoxifying enzymes were significantly affected due to the treatment. There were quantitative and qualitative changes in the protein contents, in addition to a significant reduction in the total lipids and total carbohydrates of the treated larvae compared with the untreated larvae. The application of AgNPs against S. littoralis larva, as demonstrated by our findings, paves the way for new pest control options.

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Section: Discussionmentioning

confidence: 99%

The Proficiency of Silver Nanoparticles in Controlling Cotton Leafworm, Spodoptera Littoralis (Boisd.), Under the Laboratory Conditions

Abdou

Zyaan

2023

Egyptian Journal of Zoology

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“…Similarly, thiocyclam is a highly effective insecticide against the field strain [ 58 , 59 ] of Tuta absoluta (Meyrick) (9.98 mg/L). In contrast, A .…”

Section: Discussionmentioning

confidence: 99%

Nano-insecticides against the black cutworm Agrotis ipsilon (Lepidoptera: Noctuidae): Toxicity, development, enzyme activity, and DNA mutagenicity

et al. 2022

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Frequent applications of synthetic insecticides might cause environmental pollution due to the high residue. In addition, increasing insecticide resistance in many insect pests requires novel pest control methods. Nanotechnology could be a promising field of modern agriculture, and is receiving considerable attention in the development of novel nano-agrochemicals, such as nanoinsectticides and nanofertilizers. This study assessed the effects of the lethal and sublethal concentrations of chlorantraniliprole, thiocyclam, and their nano-forms on the development, reproductive activity, oxidative stress enzyme activity, and DNA changes in the black cutworm, Agrotis ipsilon, at the molecular level. The results revealed that A. ipsilon larvae were more susceptible to the nano-forms than the regular forms of both nano chlorine and sulfur within the chlorantraniliprole and thiocyclam insecticides, respectively, with higher toxicities than the regular forms (ca. 3.86, and ca.2.06-fold, respectively). Significant differences in biological parameters, including developmental time and reproductive activity (fecundity and hatchability percent) were also observed. Correspondingly, increases in oxidative stress enzyme activities were observed, as were mutagenic effects on the genomic DNA of A. ipsilon after application of the LC50 of the nano-forms of both insecticides compared to the control. These promising results could represent a crucial step toward developing efficient nanoinsecticides for sustainable control of A. ipsilon.

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“…Similarly, thiocyclam is a highly effective insecticide against the field strain [58] of Tuta absoluta (9.98 mg/L). Likewise, the thiocyclam [59] had the highest efficiency in larvae mortality in field experiments in Iran.…”

Section: Discussionmentioning

confidence: 99%

Nano-Insecticides Against the Black Cutworm Agrotis ipsilon (Lepidoptera: Noctuidae): Toxicity, Development, Enzyme activity, and DNA Mutagenicity

Awad

Ibrahim

Osman

et al. 2021

Preprint

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High-frequency doses of chemical pesticides cause environmental pollution with high pesticide residues. In addition, increasing insecticide resistance in many insect pests requires novel pest control methods. Nanotechnology could be a promising field of modern agriculture, and is receiving considerable attention in the development of novel nano-agrochemicals, such as nanoinsectticides and nanofertilizers. This study assessed the effects of the lethal and sublethal concentrations of chlorantraniliprole, thiocyclam, and their nano-forms on the development, reproductive activity, oxidative stress enzyme activity, and DNA changes at the molecular level of the polyphagous species of black cutworm Agrotis ipsilon. The results revealed that A. ipsilon larvae were more susceptible to the nano-formsthan the regular forms of both nano chlorine and sulfur within the chlorantraniliprole and thiocyclam insecticides, respectively, with higher toxicities than the regular forms (ca. 3.86, and ca.2.06-fold, respectively). Significant differences in biological parameters, including developmental time and reproductive activity (fecundity and hatchability percent) were also observed. Correspondingly, increases in oxidative stress enzyme activities were observed, as were mutagenic effects on the genomic DNA of A. ipsilon after application of the LC50 of the nano-forms of both insecticides compared to the control. The positive results obtained here have led us to apply these nano-forms indifferent insect models in additional studies.

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Efficacy of Certain Pesticides Against Larvae of Tomato Leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

Cited by 4 publications

References 22 publications

The Proficiency of Silver Nanoparticles in Controlling Cotton Leafworm, Spodoptera Littoralis (Boisd.), Under the Laboratory Conditions

The Proficiency of Silver Nanoparticles in Controlling Cotton Leafworm, Spodoptera Littoralis (Boisd.), Under the Laboratory Conditions

Nano-insecticides against the black cutworm Agrotis ipsilon (Lepidoptera: Noctuidae): Toxicity, development, enzyme activity, and DNA mutagenicity

Nano-Insecticides Against the Black Cutworm Agrotis ipsilon (Lepidoptera: Noctuidae): Toxicity, Development, Enzyme activity, and DNA Mutagenicity

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