Comparative Studies, Under Laboratory Conditions, of Four Selected Insecticides on Pink Bollworm, Pectinophora gossypiella (Saund.)

Ahmed, Dina A.

doi:10.21608/eajbsf.2020.111247

Cited by 4 publications

(4 citation statements)

References 29 publications

(15 reference statements)

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“…Abouelghar et al (2013) mentioned that the histological alterations in the larval midgut of S. littoralis 4 th instar larvae induced by Tracer are supposed to be responsible for the decreasing in food utilization and subsequently growth. In addition, Ahmed (2020) found that Proclaim caused destruction in the epithelial columnar cells of PBW. So, destruction of the epithelial cells could disrupt enzyme secretion, meanwhile affect the metabolism of main metabolites accordingly affect the growth, longevity, development and reproduction.…”

Section: Results and Discution 1 Biochemical Studiesmentioning

confidence: 99%

Carbohydrate Hydrolyzing Enzymes As A Target for Pink Bollworm Pectinophora gossypiella (Saund.) Control Agents الانزیمات الهاضمة للکربوهیدرات کهدف لعوامل مکافحة دودة اللوز القرنفلیة Pectinophora gossypiella (Saund.)

Kandil¹,

El-Shennawy²,

Ahmed³

2020

Journal of Plant Protection and Pathology

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Most insect species depend on the digestive enzymes (invertase, trehalase and amylase) to utilize their uptake of carbohydrates. In the present investigation the activities of these enzymes are used as parameters to study the effect of the selected insecticides [i.e. Teflubenzuron (Nomolt 15%), emamectin benzoate (Proclaim 5% SG); azadirachtin (Saif oil 0.03% EC) and spinosad (Tracer 24% SC)] on pink bollworm, Pectinophora gossypiella. Results showed that invertase had the highest activity (62.03 mg glucose released/gm body weight/min), while amylase had the lowest one (37.91 mg glucose released/gm body weight/min). Treatment caused a reduction effect on the carbohydrate hydrolyzing enzymes, except in the case of trehalase whereas its activity increased significantly only by Saif oil. Tested insecticides could be arranged according to their percentages of changes in the enzymes activities as follows: Nomolt & Tracer > Proclaim > Saif oil. The present study clearly showed that the amylase enzyme appeared to be the most affected enzyme with high level of significant reduction followed by invertase than trehalase, these percentages were -

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Section: Results and Discution 1 Biochemical Studiesmentioning

confidence: 99%

Carbohydrate Hydrolyzing Enzymes As A Target for Pink Bollworm Pectinophora gossypiella (Saund.) Control Agents الانزیمات الهاضمة للکربوهیدرات کهدف لعوامل مکافحة دودة اللوز القرنفلیة Pectinophora gossypiella (Saund.)

Kandil¹,

El-Shennawy²,

Ahmed³

2020

Journal of Plant Protection and Pathology

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“…Acetylcholine esterase is able to catalyze the hydrolysis of neurotransmitter, acetylcholine, in the nervous system of various organisms to terminate nerve impulses (Bourne et al 2016). Glutamic-oxaloacetic transaminase (GOT/AST) and glutamic-pyruvic transaminase (GPT/ALT) are transaminase enzymes which can be affected by bioinsecticides (Ahmed 2020). Wigglesworth (2012) found a close relationship between protein synthesis and levels of transaminases in insects.…”

Section: Discussionmentioning

confidence: 99%

Using the secondary metabolites of some fungi and wild plants as natural pesticides to control cotton mealybug, Phenacoccus solenopsis (Hemiptera: Pseudococcidae)

2023

Journal of Plant Protection Research

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As alternatives to chemical insecticides, entomopathogenic fungi or wild plants and their secondary metabolites are being used. These biocontrol agents are significant because of their biodegradability, specificity, eco-friendliness, and utility as agents to reduce insecticide resistance. In this study five ethyl acetate extracts of locally isolated fungal strains (Ta laromyces atroroseus, Fusarium chlamydosporum, Talaromyces stipitatus, Trichoderma lixii, Beauveria bassiana) as well as alkaloid extract of Haloxylon salicornicum were extracted and investigated as biocontrol agents against cotton mealybug Phenacoccus solenopsis. The results indicated that all extracts had toxic effects against P. solenopsis except the extract of T. stipitatus. The LC 50 values and toxicity index indicated that the alkaloid extract of H. salicornicum was the most toxic one (26 ppm) after 72 hours of treatment followed by the extracts of F. chlamydosporum (77 ppm), then B. bassiana (84 ppm) and T. lixii (118 ppm). On the other hand, there were significant changes in tested insect enzyme activities (amylase, lipase, glutamic oxaloacetic transaminase (GOT), glutamic pyruvic transaminase (GPT), and acetyl choline esterase (AchE) as well as total proteins and lipids in the insects treated with the alkaloid extract of H. salicornicum, and ethyl acetate extracts of F. chlamydosporum and B. bassiana after 24 hours of treatment compared to the control. GC/MS analyses of fungal extracts indicated that there were some bioactive compounds like hexadecanoic acid, octadecanoic acid, and tetradecanoic acid. In addition, the anabasine compound was found as a major constituent of the alkaloid extract of H. salicornicum and identified by 1H NMR and GC/MS analysis. In conclusion, according to this study, it was recommended that the alkaloid extract of H. salicornicum and the ethyl acetate extracts of F. chlamydosporum, B. bassiana, and T. lixii be used as alternatives to chemical insecticides for controlling the cotton mealybug P. solenopsis.

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“…Moreover, Taha and Al‐Hadek [2016] revealed that emamectin benzoate caused a slight decrease in invertase activity and an abundant decrease in amylase activity compared with that of untreated larvae in field Tuta absoluta . Ahmed [2020] found that Proclaim caused destruction of the epithelial columnar cells of pink bollworm that could cause disruption in enzyme secretion, growth, longevity, development, and reproduction.…”

Section: Discussionmentioning

confidence: 99%

The Impact of Magnetic Field on Insecticide Toxicity Measured by Biological and Biochemical Parameters of Earias insulana (Boisd)

El-Bassouiny¹,

El-Medany²,

Kandil³

2022

Bioelectromagnetics

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This study illustrates the effect of magnetic field (MF) on the toxicity of two insecticides, emamectin benzoate (Emazoate 2.15% EC) and spinosad (SpinTor 24% SC), and determines their adverse effects on the bollworm (Earias insulana) through various biological and biochemical assays. The investigation indicated that exposure to the insecticides in a MF of 180 mT resulted in stronger toxicity, with LC 50 values of 0.162, 1.211, and 1.770 ppm, respectively. In addition, the results showed that magnetized insecticides significantly increased in the duration of the total immature stages (larvae and/or pupae) 32.1 and 36.6 days, compared with 27.9 and 30.5 days, respectively, in the nonmagnetized insecticides, while untreated check was 21 days. Also, the magnetized insecticides reduced the percentage of adult emergence, and increased deformations in the larval and pupal stages. Furthermore, sex ratio was greatly affected by exposure to both insecticides in conjunction with the MF. Exposure of the larvae of E insulana to magnetized insecticides can bring about malfunction in some biochemical process and significantly decreased the invertase activity, and decreased the total protein and carbohydrates. In contrast, it can increase amylase compared with nonmagnetized insecticides and untreated controls. Results concluded that the two insecticides' MF affected growth, survival time, and biological and biochemical parameters of E. insulana. Bioelectromagnetics. 43:368-380, 2022.

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Comparative Studies, Under Laboratory Conditions, of Four Selected Insecticides on Pink Bollworm, Pectinophora gossypiella (Saund.)

Cited by 4 publications

References 29 publications

Carbohydrate Hydrolyzing Enzymes As A Target for Pink Bollworm Pectinophora gossypiella (Saund.) Control Agents الانزیمات الهاضمة للکربوهیدرات کهدف لعوامل مکافحة دودة اللوز القرنفلیة Pectinophora gossypiella (Saund.)

Carbohydrate Hydrolyzing Enzymes As A Target for Pink Bollworm Pectinophora gossypiella (Saund.) Control Agents الانزیمات الهاضمة للکربوهیدرات کهدف لعوامل مکافحة دودة اللوز القرنفلیة Pectinophora gossypiella (Saund.)

Using the secondary metabolites of some fungi and wild plants as natural pesticides to control cotton mealybug, Phenacoccus solenopsis (Hemiptera: Pseudococcidae)

The Impact of Magnetic Field on Insecticide Toxicity Measured by Biological and Biochemical Parameters of Earias insulana (Boisd)

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