Laboratory and Field Toxicity Evaluation of some Methomyl Derivatives against Eobania vermiculata Infesting Citrus Trees

Emara, Esam; El-Sawaf, Maher; Khalifa, Rasha

doi:10.21608/eajbsf.2023.317455

Egyptian Academic Journal of Biological Sciences, F. Toxicology

2023

DOI: 10.21608/eajbsf.2023.317455

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Laboratory and Field Toxicity Evaluation of some Methomyl Derivatives against Eobania vermiculata Infesting Citrus Trees

Esam Emara,

Maher El-Sawaf,

Rasha Khalifa

Abstract: http://eajbsf.journals.ekb.eg/ Laboratory and Field Toxicity Evaluation of some Methomyl Derivatives against Eobania vermiculata Infesting Citrus Trees

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2024

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Liver and mucous secretion enzymatic biomarkers of Eobania vermiculata treated with some newly synthesized acrylamide derivatives

Emara,

El-Sawaf,

Khalifa

2024

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Background Acrylamide derivatives have a potential biological activity as well as acting as precursors in many organic syntheses. Moreover, acrylamides and their derivatives cause convulsions and diffused damage to different sections of the nervous system of infected animals. Novel copper and zinc chelates originated from (E)-3-(4-bromophenyl)-2-cyanoacrylamide (L1), and (E)-2-cyano-3-(4-nitrophenyl)acrylamide (L2) were prepared, and their chemical skeletons were identified by infrared and mass spectra. The obtained compounds were screened in vitro against the brown garden snail, Eobania vermiculata using the contact method along 72 h. Stock solutions of tested compounds were prepared utilizing distilled water and DMSO mixture, and four concentrations of each compound were prepared (50, 150, 250 and 350 ppm). Eobania vermiculata snails were treated with LC50 concentrations of prepared compounds for 3 days, and live snails were used to estimate the level of some liver and mucous secretion enzymatic biomarkers: transaminases enzymes (Alanine Aminotransferase (ALT) and Aspartate Aminotransferase (AST)), Total Protein content (TP), Acid Phosphatases (ACP) and Alkaline Phosphatase (ALP). Results The results demonstrated that the examined compounds have a relatively toxic effect toward the screened species. Zinc complexes displayed a higher toxicity than copper ones. The results authenticated considerable high effects of the synthesized compounds on investigated enzymes. Conclusions The promising effects of Cu(II), Zn(II) complexes (1, 2) on stimulating the mucous secretion of tested snails are clear through the elevated levels of ALP and ACP enzymes of treated snails. The enhancement or reduction of AST, ALT level and TP content of treated snails demonstrated the effects of prepared compounds on liver functions of these species.

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Liver and mucous secretion enzymatic biomarkers of Eobania vermiculata treated with some newly synthesized acrylamide derivatives

Emara,

El-Sawaf,

Khalifa

2024

JoBAZ

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In vitro molluscicidal activity and biochemical impacts of some thiophene derivatives against the glassy clover snail, Monacha obstructa (Pfeiffer)

Emara,

Batt,

El-Sawaf

2024

JoBAZ

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Background The glassy clover snail, Monacha obstructa (Pfeiffer), is considered one of the major agricultural pests that ruin many field crops, vegetables, orchards of fruits, plants of ornament as well as many other plantations. Synthesis of the Schiff base ligand, namely bis-[4-benzylidene-thiophene-2′-yl] methane (L), produced from the reaction between thiophene-2-carboxaldehyde and diaminodiphenylmethane (MDA), alongside its copper complex were conducted. The output chemical compounds were evaluated in vitro for their molluscicidal activity against the glassy clover snail, M. obstructa by performing the contact technique. Stock solutions were prepared via using (distilled water + DMF) mixture. Furthermore, the impact of these compounds on some critical biochemical indicators: cholesterol, total protein, and acetylcholinesterase (AChE), was evaluated. Results The outcome results demonstrated the significantly higher molluscicidal activity of the Cu(II) chelate compared to its free ligand (L), which in turn reveals the importance of metal chelation in enhancing toxicity against the target species. Particularly, the LC25 and LC50 values are (27.25, 34.65) and (17.88, 25.31) ppm for the ligand (L) and its copper construction, respectively. Additionally, the data confirmed the significant effectiveness of the tested compounds on the assessed biochemical indicators of treated snails. Total protein and cholesterol levels were elevated after treatment with both the ligand (L) and its copper complex while AChE activity increased after treatment with the ligand (L) and reduced upon the exposure to the Cu(II) chelate. Conclusions The findings established that the copper complex exhibited a markedly higher molluscicidal activity compared to the free ligand (L). Also, the results confirmed the significant effects of the investigated compounds on the assessed biochemical indicators of treated M. obstructa snails.

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Laboratory and Field Toxicity Evaluation of some Methomyl Derivatives against Eobania vermiculata Infesting Citrus Trees

Abstract: http://eajbsf.journals.ekb.eg/ Laboratory and Field Toxicity Evaluation of some Methomyl Derivatives against Eobania vermiculata Infesting Citrus Trees

Cited by 2 publications

References 22 publications

Liver and mucous secretion enzymatic biomarkers of Eobania vermiculata treated with some newly synthesized acrylamide derivatives

Liver and mucous secretion enzymatic biomarkers of Eobania vermiculata treated with some newly synthesized acrylamide derivatives

In vitro molluscicidal activity and biochemical impacts of some thiophene derivatives against the glassy clover snail, Monacha obstructa (Pfeiffer)

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