Larvicidal activity of the essential oil of <i>Youngia japonica</i> aerial parts and its constituents against <i>Aedes albopictus</i>

Liu, Xin Chao; Liu, Qiyong; Chen, Xu Bo; Liu, Qi Zhi; Liu, Zhi Long

doi:10.1515/znc-2014-4074

Cited by 25 publications

(28 citation statements)

References 27 publications

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“…It has been previously reported that the plant extract had larvicidal activity against Ae. albopictus [36], C. quinquefasciatus [37], Ae. aegypti and An.…”

Section: Discussionmentioning

confidence: 99%

“…Phytochemically, the plant contain various bioactive compounds including alkaloids, coumarins, flavonoids, tannins and essential oils [34, 35]. Of considerable interest, the plant extracts have shown detrimental effects on survival, development and adult emergence of mosquitoes such as Aedes albopictus [36], Culex quinquefasciatus [37], Aedes aegypti and Anopheles stephensi [38] which has been attributed to possibility of compounds with anti-juvenile hormone activity. However, effectiveness of the plant extracts to control the principal Afrotropical malaria vectors An.…”

Section: Introductionmentioning

confidence: 99%

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Methanolic extract of Agerantum conyzoides exhibited toxicity and growth disruption activities against Anopheles gambiae sensu stricto and Anopheles arabiensis larvae

Muema

Njeru

Colombier

et al. 2016

BMC Complement Altern Med

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BackgroundVector control remains the mainstay to effective malaria management. The negative implications following persistent application of synthetic insecticides geared towards regulation of mosquito populations have necessitated prospection for ecofriendly effective chemistries. Plant-derived compounds have the potential to control malaria-transmitting mosquito populations. Previously, Agerantum conyzoides extracts have demonstrated toxicity effects on disease-transmitting mosquitoes. However, their efficacy in controlling Afrotropical malaria vectors remains unclear. Herein, the toxicity and growth disruption activities of crude methanolic leaf extract of A. conyzoides on Anopheles gambiae sensu stricto and An. arabiensis larvae were assessed. MethodsLate third (L3) instars of An. gambiae s.s and An. arabiensis larvae were challenged with increasing doses of crude methanolic extract of A. conyzoides. The larval mortality rates were recorded every 24 h and the LC50 values determined at their associated 95% confidence levels. ANOVA followed by Post-hoc Student-Newman-Keuls (SNK) test was used to compare results between treatment and control groups. Phytochemical profiling of the extract was performed using standard chemical procedures.ResultsTreatment of larvae with the methanolic extract depicted dose-dependent effects with highest mortality percentages of ≥ 69% observed when exposed with 250 ppm and 500 ppm for 48 h while growth disruption effects were induced by sublethal doses of between 50–100 ppm for both species. Relative to experimental controls, the extract significantly reduced larval survival in both mosquito species (ANOVA, F(8,126) = 43.16776, P < 0.001). The LC50 values of the extract against An. gambiae s.s ranged between 84.71–232.70 ppm (95% CI 81.17–239.20), while against An. arabiensis the values ranged between 133.46–406.35 ppm (95% CI 131.51–411.25). The development of the juvenile stages was arrested at pupal-larval intermediates and adult emergence. The presence of alkaloids, aglycone flavonoids, triterpenoids, tannins and coumarins can partly be associated with the observed effects.ConclusionThe extract displayed considerable larvicidal activity and inhibited emergence of adult mosquitoes relative to experimental controls, a phenomenon probably associated with induced developmental hormone imbalance. Optimization of the bioactive compounds could open pathways into vector control programmes for improved mosquito control and reduced malaria transmission rates.

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“…It has been previously reported that the plant extract had larvicidal activity against Ae. albopictus [36], C. quinquefasciatus [37], Ae. aegypti and An.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Methanolic extract of Agerantum conyzoides exhibited toxicity and growth disruption activities against Anopheles gambiae sensu stricto and Anopheles arabiensis larvae

Muema

Njeru

Colombier

et al. 2016

BMC Complement Altern Med

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“…The chemical composition of ageratum oil in this study was different from previous study in China. Liu and Liu (2014) reported there were 32 major com-ponents in ageratum oil, the main components were precocene II (45.75%), precocene I (14.09%), and caryophyllene (12.13%) followed by germacrene D (4.18%) and caryophyllene oxide (4.06%).…”

Section: Chemical Compositions Of the Tested Essential Oilsmentioning

confidence: 99%

THE EFFECT OF ESSENTIAL OIL MIXTURES ON MORTALITIES AND OVIPOSITION DETERRENTS OF Crocidolomia pavonana AND Helopeltis antoniierrents Of Crocidolomia Pavonana And Helopeltis Antonii

Mardiningsih

Balfas

2017

bul. littro

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Essential oil, such as citronella, lemongrass, ageratum, and clove are known to be toxic and repel certain pests. Mixing two or more essential oils are expected increasing their insecticidal properties. The experiments aimed to examine the effect of essential oils mixtures (EOs) on mortalities and oviposition deterrents of Crocidolomia pavonana and Helopeltis antonii. The experiments were conducted at the laboratory and green house of the Indonesian Spices and Medicinal Crops Research Institute. The tested mixtures were citronella and clove (CiC); lemongrass and clove (LC); ageratum and clove (AC); individual EO; control 1 (water + emulsifier); control 2 (water) at 0.5% concentration for all treatments. The ratio used were 1:1, 1:2, 1:4, 2:1 and 4:1. Parameters observed were the mortalities of C. pavonana larvae and H. antonii nymphs; and the ovipositions deterrents of both insects. The CiC and LC mixtures gave low mortality (<50%) to C. pavonana larvae, while AC at ratios 1:1, 1:2,1:4 less than 20%, AC 2:1 and 4:1 >60% and the individual ageratum oil caused 77.5% mortalities. The CiC 1:1 and LC (1:1, 1:2, and 4:1) showed >40% mortalities of H. antonii, whereas the AC in all ratios enhanced the nymph mortalities. The number of eggs laid by C. pavonana at CiC and LC in all ratios were around 50-60% lower than individual EO. The mixture of AC 1:4 and 4:1 produced eggs nearly 50% lower than clove treatment. The CiC and LC at 1:1 produced the lowest numbers of egg laid by H. antonii, while AC 1:4 reduced 70% eggs laid compared to individual EO. Key words: Crocidolomia pavonana, Helopeltis antonii, mixtures ratio ABSTRAK Minyak atsiri (MA) bersifat toksik dan repelen terhadap hama tertentu. Pencampuran dua atau lebih MA dapat meningkatkan daya kerja sifat insektisidanya. Percobaan bertujuan untuk mengetahui pengaruh campuran MA terhadap mortalitas dan penghambatan peneluran Crocidolomia pavonana dan Helopeltis antonii. Campuran yang diuji adalah minyak serai wangi dan cengkeh (SWCK), minyak serai dapur dan cengkeh (SDCK); minyak babadotan dan cengkeh (BBCK); MA tunggal; kontrol 1 (air + emulsifier), kontrol 2 (air

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“…A. conyzoides found in India, China, Brazil and Colombia has been used in folk medicine for the treatment of several diseases such as boils, eczema, diarrhea, leprosy, metrorrhagia, dermatitis, fever and inflammation. It has also been used as anti-hemorrhagic, analgesic, diuretic, antipyretic, insecticide and to treat rheumatism [14][15][16][17][18]. In Central and Southern Africa (Cameroon, Congo and Kenya), A. conyzoides is used in traditional medicine to treat pneumonia [19], pain [20], for its anti-asthmatic, antispasmodic, haemostatic, emetic, analgesic and anesthetic properties, as well as for uterine issues [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Chemical Constituents and Antibacterial Activity of Essential Oils from Flowers and Stems of Ageratum conyzoides from Ivory Coast

Kouamé¹,

Toure²,

Kablan³

et al. 2018

Rec.Nat.Prod.

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The essential oils (EOs) obtained by hydro-distillation of flowers and stems of Ageratum conyzoides L. (Asteraceae) growing in Ivory Coast were investigated. The oils were analyzed and characterized by GC and GC-MS. Analyses of the EOs led to the identification and quantification of 48 constituents in the flower oil and 44 from the stem oil, respectively. Characterization of the EOs revealed the predominance of 6-demethoxyageratochromene or precocene I (flower: 58.8%, stem: 76.5%) and the sesquiterpene β-caryophyllene (flower: 15.2%, stem: 8.1%). Six of the identified compounds β-copaene, hexanal, trans-cadina-1(6),4-diene, α-calacorene, caryophylla-4(12),8(13)-diene-5-β-ol and 1,10-di-epi-cubenol are reported for the first time as constituents of A. conyzoides. Comparative analysis with data from Nigeria, Pakistan, Fiji and Brazil is reported. The antibacterial activity of EOs from of A. conyzoides was tested against seven bacteria. The inhibition zones and minimum inhibitory concentration (MIC) for bacteria strains which were sensitive to A. conyzoides EOs were in the range of 6.7 to 12.7 mm and 64 to 256 μg/mL, respectively. The EOs showed moderate activity against Staphylococcus aureus and Enterococcus faecalis.

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Larvicidal activity of the essential oil of Youngia japonica aerial parts and its constituents against Aedes albopictus

Cited by 25 publications

References 27 publications

Methanolic extract of Agerantum conyzoides exhibited toxicity and growth disruption activities against Anopheles gambiae sensu stricto and Anopheles arabiensis larvae

Methanolic extract of Agerantum conyzoides exhibited toxicity and growth disruption activities against Anopheles gambiae sensu stricto and Anopheles arabiensis larvae

THE EFFECT OF ESSENTIAL OIL MIXTURES ON MORTALITIES AND OVIPOSITION DETERRENTS OF Crocidolomia pavonana AND Helopeltis antoniierrents Of Crocidolomia Pavonana And Helopeltis Antonii

Chemical Constituents and Antibacterial Activity of Essential Oils from Flowers and Stems of Ageratum conyzoides from Ivory Coast

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