The Efficiency of Chitosan &amp; Silver and Their Nano-Particles on Histological and Enzymatic Activities of Land Snail, Monacha obstructa and Cutworm, Agrotis ipsilon

Morsy, Amany R.; Mohamed, Ghada R.; M.,, El- Shewy

doi:10.21608/eajbsf.2022.239448

Cited by 5 publications

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“…This could explain why S. littoralis larvae treated with nanocomposite had a high reduction in total carbohydrates. Morsy et al [40] used AgNPs against the cutworm, (Agrotis ipsilon) and they found significant reductions in the total proteins and total lipids after all tested periods, and the highest reduced values were noticed after 7 days of treatment.…”

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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“…Besnaci et al ( 2016b ) recorded histopathological alterations in the hepatopancreas of Helix aspersa as a response to three doses of Fe 2 O3NPs such as degeneration and inflammatory infiltrates. Morsy et al ( 2022 ) concluded that silver nanoparticles induced histological changes in the digestive gland of the land snail Monacha obstructa . The hepatopancreas of Helix aspersa can accumulate and its structure was altered after exposure to xenobiotics and chemicals (Grara et al 2012 ; Regoli et al 2006 ).…”

Section: Introductionmentioning

confidence: 99%

Potential toxic effects of titanium oxide (TiO2) nanoparticles on the biological, biochemical, and histological aspects of the land snail Helix aspersa

Abdel-Azeem

Osman

Mohamed

2023

Environ Sci Pollut Res

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Nanotechnology has come a long way in our lives. However, it maintains some negative effects on the environment. This study aims to use the land snail Helix aspersa as a bioindicator. Titanium dioxide nanoparticles (TiO2NPs) had been used at 70 and 140 µg/L for two weeks by the spraying method. The oxidative biomarkers, condition index (CI), DNA damage, hemocyte count, and phagocytic activity were estimated. The toxicity of TiO2NPs was determined (LC50 = 544 µg/L). The exposure to TiO2NPs caused a significant reduction of the activities of superoxide dismutase (SOD) and catalase (CAT) in the digestive gland of Helix aspersa (the activity of CAT was 3.4 ± 0.1 (P = 0.001), SOD was 11 ± 1 (P = 0.0002) at concentration 140 µg/L after two weeks). The activity of glutathione peroxidase (GPX) was (1.13 ± 0.01 µ/mg protein at 140 µg/L compared with controls (5.47 ± 0.01 µ/mg protein). The treatment caused DNA damage in the hemocytes (tail DNA % = 8.66 ± 0.02 and tail moment = 52.99 ± 0 at140 µg/L (P = 0.002)). In the digestive gland, both tail DNA % and tail moment increased (tail moment = 78.38 ± 0.08 compared with control = 2.29 ± 0.09 (P = 0.0001)). The total count of hemocytes significantly decreased after two weeks (the average number was 71 ± 1.5 compared with controls 79 ± 1.1 at 140 µg/L). Furthermore, TiO2NPs caused histological alterations in the digestive gland of Helix aspersa. It can be concluded that the Helix aspersa can be used as environmental pollution bioindicator. A comprehensive evaluation of toxic effects induced by TiO2NPs in vivo assays must be investigated.

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Algae materials for bionanopesticides

Elrefaey

Salem

2023

Algae Materials

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The Efficiency of Chitosan & Silver and Their Nano-Particles on Histological and Enzymatic Activities of Land Snail, Monacha obstructa and Cutworm, Agrotis ipsilon

Cited by 5 publications

References 0 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

Potential toxic effects of titanium oxide (TiO2) nanoparticles on the biological, biochemical, and histological aspects of the land snail Helix aspersa

Algae materials for bionanopesticides

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