Evaluation of the Larvicidal Efficacy of Five Indigenous Weeds against an Indian Strain of Dengue Vector,<i>Aedes aegypti</i>L. (Diptera: Culicidae)

Sharma, Aarti; Kumar, Sarita; Tripathi, Pushplata

doi:10.1155/2016/2857089

Cited by 19 publications

(11 citation statements)

References 26 publications

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“…The larvicidal and pupicidal activities were checked by the under laboratory as well as field conditions.This plant was selected based on their ethnobotanical literatures. 17 Therefore this study provide first report mosquito larvicidal and pupicidal activity, combined effect of T. purpurea leaf extract B. Sphaericus against A. aegypti.…”

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confidence: 76%

Mosquito Larvicidal and Pupicidal Activity of Tephrosia purpurea Linn. (Family: Fabaceae) and Bacillus sphaericus against, Dengue Vector, Aedes aegypti

Venkadachalam¹,

Subramaniyan²,

Palani³

et al. 2017

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Objective:The bio-efficacy of Tephrosia purpurea leaf extract and bacterial insecticide, Bacillus sphaericus larvicidal activity was assessed against the first to fourth instars larvae of Aedes aegypti, under the laboratory conditions. Methods: The plant material was shade dried at room temperature and powdered coarsely. T. purpurea and B. sphaericus show the various concentrations of larvicidal and pupicidal activity against various instars larvae of A. aegypti. Results: The LC 50 of T. purpurea against the first to fourth instars larvae were 139. 24, 176.24, 219.28, 256.27, and 326.29 A. aegypti in all the tested concentrations than the individuals and clearly established that there is a substantial amount of synergist act. Conclusion: The present study reported that both T. purpurea and B. sphaericus materials could serve as a potential larvicidal agent. Since, A. aegypti is a container breeder vector mosquito this user and eco-friendly and low-cost vector control strategy could be a viable solution to the existing dengue disease burden. Therefore, this study provides first report on the mosquito larvicidal activity the combined effect of T. purpurea leaf extract and B. sphaericus against as target species of A. aegypti.

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confidence: 76%

Mosquito Larvicidal and Pupicidal Activity of Tephrosia purpurea Linn. (Family: Fabaceae) and Bacillus sphaericus against, Dengue Vector, Aedes aegypti

Venkadachalam¹,

Subramaniyan²,

Palani³

et al. 2017

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“…Similarly, hexane extract of Achyranthes aspera, Cassia occidentalis, Catharanthus roseus, Lantana camara and Xanthium strumarium stem exhibited a 100% mortality against 4th instar larvae of Ae. aegypti with LC 50 and LC 90 of (68.1 ppm, 115.1 ppm), (149.7 ppm,206.3 ppm), (108.2 ppm,184.2 ppm), (89.6 ppm,125.9 ppm) and (460.9 ppm,1074.0 ppm) respectively[35]. Ethyl acetate extracts of Sterculia quinqueloba stem resulted appreciable larvicidal activity against the 3rd instar larvae of Ae.…”

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confidence: 94%

Evaluation of larvicidal activities of Parthenium hysterophorus L. against Anopheles arabiensis (Diptera: Culicidae), the major malaria vector in Ethiopia

Tarekegn

Wolde-Hawariat

Dugassa

et al. 2020

Int J Trop Insect Sci

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Background: Malaria is a leading public health problem in Ethiopia despite the implementation of effective indoor vector control strategies over several decades. Vector control operations in the country largely depend on the application of Indoor Residual Spraying (IRS) of synthetic insecticides and Long Lasting Insecticidal Nets (LLINs) which resulted in a signi cant reduction in the malaria burden. The spread of resistance to insecticides in these indoor vector control tools in vector species is a serious challenge. Alternatively, reports indicate that botanicals which are relatively safe possess toxic compounds with high larvicidal activities. However, there are limited evidences on the larvicidal effect of botanicals against the malaria vectors, Anopheles arabiensis. This study aimed to evaluate the larvicidal activities of the extracts of the roots, stems, and leaves of Parthenium hysterophorus against the 4 th instar larvae of An. arabiensis. Methods: Field collected leaves, stems and root parts of P. hysterophorus were dried and separately ground to powder and extracted in petroleum ether, hexane, acetone, and ethanol solvents. The extracts were concentrated using a Rota evaporator, and stock solutions were subject to serial dilutions for use as test concentrations. Laboratory reared 4 th instar larvae of An. arabiensis were used for the larvicidal bioassays. Mortality data were subjected probit analysis to determine LC 50 and LC 90 of the extracts. Results: The results showed that there were signi cant differences in percentage larval mortalities (P<0.05) among different concentrations of the leaf, stem, and root solvent extracts, respectively. Hexane extracts of leaves and stem of P. hysterophorus at 480ppm caused the highest mortality of 4 th larval instar of An. arabiensis (85% and 96.7%, respectively) compared to those of ethanolic, acetone, and petroleum ether extracts of these plant parts. Petroleum ether extracts of the root of P. hysterophorus were the most effective in causing very high larval mortality at 360ppm and 480ppm (98.3%). The LC 50 value of petroleum ether root extract (10.7ppm) and LC 90 value of petroleum ether root extract (105.5ppm) were signi cantly lower than those of ethanol, acetone, and hexane root extracts, respectively. Conclusion: Petroleum ether root extract of P. hysterophorus has remarkably high larvicidal potential against 4 th instar larvae of An. arabiensis which could be exploited for malaria vector control. Further studies on the larvicidal e cacy of the extracts under eld conditions and identi cation of the bioactive components in the root parts of this weed plant are recommended.

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“…The present investigations were conducted on the early fourth instars of dengue vector, Ae. aegypti maintained in an insectary under controlled conditions of 28 ± 1 °C, 80 ± 5% RH and 14:10 L/D photoperiod as per protocol of Sharma et al (2016).…”

Section: Methodsmentioning

confidence: 99%

A facile and rapid method for green synthesis of Achyranthes aspera stem extract-mediated silver nano-composites with cidal potential against Aedes aegypti L.

Sharma

Kumar

Tripathi

2019

Saudi Journal of Biological Sciences

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Aedes aegypti L. is the primary vector associated with transmission of globally concerned diseases; Zika, yellow fever, dengue and Chikungunya. Present study investigates an efficient, alternative and comparative approach for mosquito control which is safe to environment and non-target organisms. The silver nano-composites ( AgNCs) were synthesized from the aqueous stem extract of Achyranthes aspera (AASE) using different concentration of aqueous silver nitrate (AgNO 3 ). The synthesis was tracked by UV-vis spectrophotometer and particle size analyser (DLS). The evaluation of their larvicidal potential against early fourth instars of Ae. aegypti showed significant potency, the toxicity increasing with the concentration of silver nitrate. The 24, 48 and 72 h bioassays resulted in respective LC 50 values of 26.693, 1.113 and 0.610 μg/mL (3 mM AASE-AgNO 3 ) 9.119, 0.420 and 0.407 μg/mL (4 mM AASE-AgNO 3 ) and that of 4.283, 0.3 and 0.248 μg/mL (5 mM AASE-AgNO 3 ). Keeping in view the significantly high larvicidal efficiency at lower concentration of silver nitrate, the 4 mM nano-composites were selected over 5 mM composites for further biophysical characterization carried out by X-ray Diffraction (XRD), Fourier transform infrared spectrometer (FTIR), Scanning electron microscopy (SEM), Energy dispersive X-ray (EDX) spectroscopy and Transmission electron microscopy (TEM). SEM and TEM confirmed the synthesis of spherical poly-dispersed AgNCs with average size ranging from 1–30 nm. Characterization through XRD showed the crystalline face-centered-cubic (fcc) structure of AgNCs with the highest intense peak obtained at 2θ value of 31.82°. FT-IR data suggests complex nature of AgNCs showing clearly defined peaks in different ranges. The present investigations recommend AgNCs of A. aspera stems as a low-cost and eco-friendly alternative to chemical insecticides for mosquito control.

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Evaluation of the Larvicidal Efficacy of Five Indigenous Weeds against an Indian Strain of Dengue Vector,Aedes aegyptiL. (Diptera: Culicidae)

Cited by 19 publications

References 26 publications

Mosquito Larvicidal and Pupicidal Activity of Tephrosia purpurea Linn. (Family: Fabaceae) and Bacillus sphaericus against, Dengue Vector, Aedes aegypti

Mosquito Larvicidal and Pupicidal Activity of Tephrosia purpurea Linn. (Family: Fabaceae) and Bacillus sphaericus against, Dengue Vector, Aedes aegypti

Evaluation of larvicidal activities of Parthenium hysterophorus L. against Anopheles arabiensis (Diptera: Culicidae), the major malaria vector in Ethiopia

A facile and rapid method for green synthesis of Achyranthes aspera stem extract-mediated silver nano-composites with cidal potential against Aedes aegypti L.

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