Biological and Histological Alterations in The Larvae of Culex pipiens L. (Diptera: Culicidae) Induced by Imidcaloproid and Tannic Acid

Farahat, Nermeen M; Khaled, Amany; Hussein, Mohamed A.; Zyaan, Ola

doi:10.21608/eajbsa.2021.160456

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…Other compounds such as tannins and saponins can reduce organisms' growth rate, affect feed efficiency and protein digestibility, and degrade their intestinal cells of them [23] . In a study carried out by Farahat et al [24] , a delay in the larval development of Culex pipiens L. mosquitoes (Diptera: Culicidae) subjected to treatment with tannic acids was observed, which suggests the effectiveness of these compounds in controlling insect pests. In addition to the secondary compounds of chili pepper extract, other factors can act on the performance of insect pests, such as the extract extraction methodology, the extracted plant part, and the vegetative stage of the plant.…”

Section: Resultsmentioning

confidence: 97%

Aqueous extract of chili pepper in the management of the pink hibiscus mealybug (Hemiptera: Pseudococcidae)

Marchiori¹,

Holtz²,

Piffer³

et al. 2023

J. Entomol. Zool. Stud.

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Maconellicoccus hirsutus (Hemiptera: Pseudococcidae) is a polyphagous pest, attacks several crops of economic importance, including cocoa and coffee. Due to its rapid dissemination, studies are needed to develop management programs to combat this pest, as few studies seek the effectiveness of alternative products such as plant extracts, which can be promising in its control. Therefore, this work aimed to evaluate the efficiency of the aqueous extract of the fruits of chili pepper Capsicum frutescens (Solanaceae) in the management of the pink hibiscus mealybug. The tests were carried out in acclimatized chambers regulated at a temperature of 25 ± 1 ºC, relative humidity of 70 ± 10%, and a 12hour photophase. The treatments consisted of five extract concentrations: 0.0, 2.5, 5.0, 7.5, and 10% (weight/volume). Coffee leaves were submerged in the aqueous solution of pepper extract and mounted in Petri dishes with agar solution to transfer the mealybugs. Each treatment consisted of 10 repetitions with 10 young mealybugs each. The experiment was evaluated 24, 48, and 72 h after the procedure. Data were submitted for analysis of variance and regression test (p≤0.05). Lethal concentration (LC50) was estimated using Probit analysis. The mortality of mealybugs increased with the increase in extract concentrations, with mortalities greater than 70% from the lowest concentration. The data fit the Probit model, with χ² of 1.0478 (p > 0.05) and a curve slope of 1.7799. The LC50 was estimated at 0.96%. Thus, the aqueous extract of Capsicum frutescens fruits is promising for the management of M. hirsutus.

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Section: Resultsmentioning

confidence: 97%

Aqueous extract of chili pepper in the management of the pink hibiscus mealybug (Hemiptera: Pseudococcidae)

Marchiori¹,

Holtz²,

Piffer³

et al. 2023

J. Entomol. Zool. Stud.

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“…However, in our current study, the histological changes induced in the midgut of the 4 th larval instars of S. littoralis treated with imidacloprid was similar to these obtained by [52] for the midgut of Locusta migratoria treated with the same insecticide. Also, the histopathological alterations of imidacloprid and tannic acid on the larvae of Culex pipiens showed that the treated larvae had cytopathological alterations of the midgut epithelium, muscular layers, and epithelial cells [53].…”

Section: Discussionmentioning

confidence: 98%

Feeding deterrence and midgut histomorphological alterations in Spodoptera littoralis larvae treated with separate and combined imidacloprid and spinosad

Elsayed,

Shaurub,

Tawfik

2023

Assiut University Journal of Multidisciplinary Scientific Resea

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The widespread agricultural polyphagous insect pest Spodoptera littoralis (Boisduval) (Lepidoptera: Noctuidae) infests various crops especially the Egyptian cotton. Safer alternatives for insect pest control are needed due to the drawbacks of current insecticide used in agriculture settings. The neonicotinoid imidacloprid and the spinosyn biopesticide spinosad are widely used in crop systems to fight against a broad spectrum of phytophagous insect pests. Although spinosad and imidacloprid have been used in separate trials against S. littoralis, nothing is known about the impact of their binary mixing. Thus, the current research investigated the effects of imidacloprid at sublethal levels and spinosad alone and in combination on the antifeedant activity and the histomorphological changes probably caused in the midgut of S. littoralis 4 th -instar larvae. Using the leaf-dip technique approach, on castor-bean

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Biological and Histological Alterations in The Larvae of Culex pipiens L. (Diptera: Culicidae) Induced by Imidcaloproid and Tannic Acid

Abstract: and internal organelles. Both IMI and tannic acid showed nearly the same effect on the larvae histology. Based on these results, tested compounds could be used in the Integrated Pest Management (IPM) programs for greater effectiveness.

Cited by 2 publications

References 19 publications

Aqueous extract of chili pepper in the management of the pink hibiscus mealybug (Hemiptera: Pseudococcidae)

Aqueous extract of chili pepper in the management of the pink hibiscus mealybug (Hemiptera: Pseudococcidae)

Feeding deterrence and midgut histomorphological alterations in Spodoptera littoralis larvae treated with separate and combined imidacloprid and spinosad

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