Evaluation of indigenous plant extracts against larvae of Culex quinquefasciatus Say (Diptera: Culicidae)

Rahuman, Abdul Abdul; Bagavan, Asokan; Kamaraj, Chinnaperumal; Vadivelu, M.; Zahir, Abdul Abduz; Elango, Gandhi; Pandiyan, G.

doi:10.1007/s00436-008-1240-9

Cited by 84 publications

(34 citation statements)

References 36 publications

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“…Moreover, the direct proportion detected between the mortality means and exposure time from 24 to 48 h confirmed what has been reported by several investigators (Abdul Rahuman et al, 2008;Abdu Zahir et al, 2009), which showed gradual buildup in mortalities in relation to time factor post treatments.…”

Section: Discussionsupporting

confidence: 90%

In vitro studies of larvicidal effects of some plant extracts against Anopheles gambiae larvae (Diptera: Culicidae)

Okbatinsae¹,

Haile²

2017

J. Med. Plants Res.

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Larvicidal effects of plant extracts against larvae of Anopheles gambiae were studied in the malaria entomology laboratory at Mendefera. The aim of the study was to evaluate ethanol and hot water extracts from leaves of seven different plants, viz., Azadirachta indica, Eucalyptus globulus, Tagetes minuta, Datura stramonium, Lantana camara, Ricinus communis and Jatropha curcas, as natural larvicides against third instar larvae of An. gambiae. Insecticidal susceptibility tests were carried out using WHO standard method and the mortality was observed after 24 and 48 h (h) of exposure. The experiment was conducted in complete randomized design in three replications. Data were collected on mortality of mosquito larvae in all the treatments and then subjected to statistical analysis using oneway ANOVA. Most of the tested extracts showed more than 50% mortality. J. curcas (100±0.00%) and R. communis (99.44±0.56) gave significantly higher larval mortalities at 1000 ppm concentration after 48 h of exposure. The experiment also showed that ethanol extracts gave higher larval mortality than hot water extracts and the efficiency of the extracts increased with an increase in the exposure period of the larvae.

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Section: Discussionsupporting

confidence: 90%

In vitro studies of larvicidal effects of some plant extracts against Anopheles gambiae larvae (Diptera: Culicidae)

Okbatinsae¹,

Haile²

2017

J. Med. Plants Res.

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“…Similarlyin this study, has the concentration of extract increases from 1000 ppm to 5000 ppm, the percentage mortality also increases almost five fold, from initial concentration to final concentration. Several investigators also confirmed positive relationship between larval mortality and time factor [36][37][38][39]. As the time of exposure increases, the percentage larval mortality of 3 instar An.…”

Section: Discussionmentioning

confidence: 75%

Pupal Emergence Inhibition Activity of Acalypha Indica Leaf Extract Against Dengue Vector, Aedes Albopictus Mosquito

Ashwini¹,

Taju²,

Thirunavukkarasu

et al. 2017

Int J Pharm Pharm Sci

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Objective: To investigate the larvicidal activities of six varying extracts of Acalypha indica (A. indica) leaves from family Euphorbiaceae against the dengue mosquito vector, Aedesalbopictus (Ae. albopictus) in laboratory. Methods:Leaves from the study plants were separated, air dried in room temperature, grounded and extracted with different solvents (petroleum ether, chloroform, ethyl acetate, n-butanol, ethanol and aqueous) by solvent apparatus and aqueous extract by maceration method. The extra solvents were evaporated to obtain crude extracts by using rotary evaporator. The crude extracts of six different solvents were dissolved in dimethyl sulphoxide (DMSO) to prepare test dosages of 1000, 2000, 3000, 4000 and 5000 ppm. Third instar larvae of Ae. albopictus were exposed to 1000, 2000, 3000, 4000 and 5000 ppm concentrations of petroleum ether, chloroform, ethyl acetate, n-butanol, ethanol and aqueous extracts of A. indica and compared with control to determine the larvicidal effects. Larval bioassays were carriedout according to World Health Organisation (WHO) procedures. The rate of larval mortality was recorded after 24h and 48 h of time exposure. Three duplicate trials were made for each tested dosage. IC50 and IC90 values were calculated by using probit analysis.Results: Based on probit analysis result the 24h and 48h LC50 and LC90 of petroleum ether extract of A. indica against Ae. albopictus was found to be 2805.43 ppm and 2376.11 ppm, 3825.14 ppm and 3327.8 ppm, respectively. An LC50 and LC90 value of chloroform extracts of A. indicaa gainst third instar larvae was found to be 2276.5 ppm and 4015.8 ppm (24h), 2213.36 ppm and 3430.43 ppm (48h), respectively. An LC50 value of 4472.17 ppm and 2469.61 ppm, and LC90 value of 4215.84 ppm was obtained on ethylacetate extract treatment against Ae. albopictus for 24h and 48h exposure, respectively. The 24h and 48 h LC50 and LC90 values of n-butanol extracts of A. indica was found to be 2777.88 ppm and 3628.19 ppm, 2225.61 ppm and 2518.86 ppm, respectively. In the present study, the larvicidal bioassays demonstrated that the n-butanolextract was most effective with 100% mortality against larvae of Ae. albopictus at 3000, 4000 and 5000 ppm compared to other extracts. All other extracts (petroleum ether, chloroform and ethyl acetate) of A. indica at high concentration (4000 ppm and 5000 ppm) manifested a significant (P<0.01 and 0.05) knock down effect of 100% moratality after 24h and 48h exposure. While the third instar lavae of Ae. albopictus were found to be most susceptabile and produced no mortality to ethanol and aqueous extract at varying parts per million. Conclusion:A. indica leaf extract was tested for the first time against dengue vector Ae. albopictus and the results revealed that A. indica can be used to control dengue vector. Further this extract needs to be evaluated under field conditions for proper exploitation of Ae. albopictus mosquito larvae. Thus, the present study provided a first report on A. indica as a prompting mosquito larvicid...

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“…This warrants the need for the development of new strategies for selective control of mosquito populations. Plants are a good source of alternative agents for control of mosquitoes [13,14] because they are rich in bioactive chemicals which are biodegradable. The Euphorbia genus is known to contain a wide variety of terpenoids, ranging from mono-, sesqui-and diterpenes to triterpenoids, flavonoids and steroids known for their toxicity or potential therapeutic activity [15].…”

Section: Chemical Composition and Mosquitocidal Activity Of N-hexane mentioning

confidence: 99%

Chemical Composition and Mosquitocidal Activity of n-Hexane and Methanolic Extracts from Euphorbia anacampseros var. tmolea: An Endemic Species of Turkey against Aedes aegypti

Demiray¹,

Tabanca²,

Göğer³

et al. 2017

Asian J. Chem.

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Volatile composition of the n-hexane and methanol extracts from E. anacampseros var. tmolea was analyzed by head space-solid phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). Chemical characterization of the methanolic extract was determined by LC-ESI-MS/MS. Both extracts were bioassayed against 1 st instar larvae and adult female Ae. aegypti. The main components identified from the E. anacampseros var. tmolea n-hexane fraction were 1,8-cineole (27.5 %), p-cymene (25 %), γ-terpinene (12.8 %), limonene (9.9 %). Methyl hexanoate (18.8 %), methyl nonanoate (13.3 %), dimethyl succinate (6.5 %), methyl octanoate (6 %) and methyl phenylacetate (5.3 %) were identified from the methanolic fraction. The n-hexane extract showed 100 % mortality at 0.1 µg/ µL against 1 st instar larvae of Ae. aegypti and the methanolic extract exhibited 83.3 % mortality at 5 µg/mosquito against adult female Ae. aegypti. The bioassay-guided study demonstrates that n-hexane and methanol extracts of E. anacampseros var. tmolea contain compounds with natural mosquito larvicidal and adulticidal activity.

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Evaluation of indigenous plant extracts against larvae of Culex quinquefasciatus Say (Diptera: Culicidae)

Cited by 84 publications

References 36 publications

In vitro studies of larvicidal effects of some plant extracts against Anopheles gambiae larvae (Diptera: Culicidae)

In vitro studies of larvicidal effects of some plant extracts against Anopheles gambiae larvae (Diptera: Culicidae)

Pupal Emergence Inhibition Activity of Acalypha Indica Leaf Extract Against Dengue Vector, Aedes Albopictus Mosquito

Chemical Composition and Mosquitocidal Activity of n-Hexane and Methanolic Extracts from Euphorbia anacampseros var. tmolea: An Endemic Species of Turkey against Aedes aegypti

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