scholarly journals Efficacies of four plant essential oils as larvicide, pupicide and oviposition deterrent agents against dengue fever mosquito, Aedes aegypti Linn. (Diptera: Culicidae)

2018 ◽  
Vol 8 (4) ◽  
pp. 217 ◽  
Author(s):  
Aksorn Chantawee ◽  
Mayura Soonwera
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Dengue Fever ◽  
Oviposition Deterrent ◽  
Plant Essential Oils

scholarly journals Artemisia vulgaris efficacies against various stages of Aedes aegypti

2020 ◽  
Vol 13 (7) ◽  
pp. 1423-1429
Author(s):  
Vika Ichsania Ninditya ◽  
Endah Purwati ◽  
Ajeng Tyas Utami ◽  
Aprillyani Sofa Marwaningtyaz ◽  
Nadia Khairunnisa Fairuz ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Larvicidal Activity ◽  
Developmental Stages ◽  
Hemorrhagic Fever ◽  
Oviposition Deterrent ◽  
Deterrent Effect ◽  
Artemisia Vulgaris ◽  
Endemic Diseases ◽  
Potential Alternative

Background and Aim: Aedes aegypti is the vector of dengue fever, dengue hemorrhagic fever, chikungunya, and, most recently, Zika. Dengue fever is one of Indonesia's endemic diseases. The principal tool for preventing dengue is controlling Ae. aegypti by chemical insecticides since vaccine against dengue is still under research. However, Ae. aegypti developed resistance to various chemical insecticides worldwide. Therefore, research on alternate compounds as mosquito insecticides is urgently needed. This study demonstrated the efficacy of Artemisia vulgaris extract as larvicidal, ovicidal, adulticidal, repellency, and oviposition deterrent activity against Ae. aegypti. Materials and Methods: A. vulgaris was obtained from Temanggung, Indonesia, while the eggs of Ae. aegypti were collected from Yogyakarta, Indonesia, and were hatched in Laboratory of Parasitology, Faculty of Veterinary Medicine, Universitas Gadjah Mada. Larvicidal activity was evaluated according to the WHO protocol; adulticidal activity was performed using the Centers for Disease Control protocol. Oviposition activity was evaluated using ovitraps added with A. vulgaris extract, complete protection time in the repellent assay was defined as the number of minutes elapsed between compound application and the landing of the first mosquito. Results: A test of the larvicidal activity of A. vulgaris extract returned an LC50 of 65.8 ppm (r2=0.9014) in 1 h and 18.6 ppm (r2=0.575) in 24 h. A. vulgaris was effective as an adulticidal, demonstrating LC50 values of 11.35 mg (r2=0.875) in 90 min, 9.63 mg (r2=0.924) in 105 min, and 6.46 mg (r2=0.925) in 120 min. A. vulgaris at a concentration of 1000 ppm was able to reach 96% of oviposition deterrent effect. The ovicidal assay, a concentration of 1000 ppm resulted in 82.67% of eggs remaining unhatched. An extract concentration of 80 mg/ml achieved 63.3±3.5% biting repellency in adults. Conclusion: This study gives a clear indication that A. vulgaris extract acts on Ae. aegypti at various developmental stages and is a potential alternative bioinsecticide for controlling this disease vector.

scholarly journals Rapid Immobilization of Adult Aedes aegypti Caused By Plant Essential Oils At Sublethal Concentrations

2018 ◽  
Vol 34 (3) ◽  
pp. 210-216 ◽  
Author(s):  
Edmund J. Norris ◽  
Maria Archevald-Cansobre ◽  
Aaron D. Gross ◽  
Lyric C. Bartholomay ◽  
Joel R. Coats
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Adult Female ◽  
Insect Pests ◽  
Plant Essential Oils ◽  
Knockdown Effect ◽  
Test Population ◽  
Insect Populations ◽  
Delayed Mortality ◽  
Sublethal Concentrations

ABSTRACT Many synthetic insecticides cause immobilization in insect pests after they are exposed. This immobilization or knockdown is an important feature of intoxication that contributes to the abatement of pest insect populations, while preventing vectors of disease from biting and spreading pathogenic organisms to susceptible individuals. We have previously demonstrated that certain plant essential oils rapidly immobilize adult female mosquitoes that have been exposed via topical application. To further characterize this effect, adult female Aedes aegypti were exposed to multiple concentrations of 32 commercially available plant essential oils, and immobilization at 1 h after exposure was recorded. The dose required to produce the 1-h knockdown effect in 50% of the test population (KD50) was calculated and compared with concentrations of each plant essential oil that caused mortality at 24 h. In the current study, multiple plant essential oils caused high percentage knockdown at 1 h at lower concentrations than concentrations that caused mortality at 24 h. Moreover, delayed mortality was observed in mosquitoes that were exposed to various concentrations of the 2 plant essential oils that produced significant knockdown at 1 h. These observations demonstrate an important characteristic of many plant essential oils and represent a novel means for which these oils may be incorporated into future insecticidal formulations.

Chemical Composition and Repellent Activity against Mosquito Aedes Aegypti of Pelargonium radula, Syzygiumaromaticum and Citrus aurantifolia Essential Oils

2020 ◽  
Vol 981 ◽  
pp. 253-257
Author(s):  
Hazrulrizawati Abd Hamid ◽  
Nishantini Silvarajoo ◽  
Nurulhusna Ab. Hamid
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Dengue Fever ◽  
Yellow Fever ◽  
Repellent Activity ◽  
Mosquito Repellent ◽  
Citrus Aurantifolia ◽  
Frequent Use

The mosquito Aedes aegypti is an epidemic vector of several diseases such as dengue fever and yellow fever. Several pesticides are used to control the mosquito population. Because of their frequent use, some mosquitoes have developed resistance. In the present study, we evaluated the synergistic mosquito-repellent activity of essential oils from Pelargonium radula, Syzgium aromaticum and Citrus aurantifolia against Aedes aegypti by using Y-tube olfactometer. The oils was subsequently analyzed by using GC–MS. These results clearly reveal that the essential oil of C. aurantifolia served as the most potent repellent agent against Aedes aegypti . The results indicate that three constituents; limonene (19.58%) followed by β–pinene (17.12%), geraniol (13.23%) which comprise a large proportion of the C. aurantifolia are likely responsible for the observed repellent activity.

scholarly journals Plant essential oils synergize various pyrethroid insecticides and antagonize malathion in Aedes aegypti

2019 ◽  
Vol 33 (4) ◽  
pp. 453-466 ◽  
Author(s):  
E. J. Norris ◽  
A. D. Gross ◽  
L. C. Bartholomay ◽  
J. R. Coats
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Pyrethroid Insecticides ◽  
Plant Essential Oils

scholarly journals Co-Toxicity Factor Analysis Reveals Numerous Plant Essential Oils Are Synergists of Natural Pyrethrins against Aedes aegypti Mosquitoes

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 154
Author(s):  
Edmund J. Norris ◽  
Jeffrey R. Bloomquist
Keyword(s):  
Factor Analysis ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Pearson Correlation ◽  
Synergistic Activity ◽  
Female Adult ◽  
Plant Essential Oils ◽  
East Indies ◽  
Toxicity Factor ◽  
Control Technologies

With insecticide-resistant mosquito populations becoming an ever-growing concern, new vector control technologies are needed. With the lack of new chemical classes of insecticides to control mosquito populations, the development of novel synergists may improve the performance of available insecticides. We screened a set of 20 plant essential oils alone and in combination with natural pyrethrins against Aedes aegypti (Orlando) female adult mosquitoes to assess their ability to synergize this natural insecticide. A co-toxicity factor analysis was used to identify whether plant oils modulated the toxicity of natural pyrethrins antagonistically, additively, or synergistically. Both knockdown at 1 h and mortality at 24 h were monitored. A majority of oils increased the toxicity of natural pyrethrins, either via an additive or synergistic profile. Many oils produced synergism at 2 µg/insect, whereas others were synergistic only at the higher dose of 10 µg/insect. Amyris, cardamom, cedarwood, and nutmeg East Indies (E.I.) oils were the most active oils for increasing the mortality of natural pyrethrins at 24 h with co-toxicity factors greater than 50 at either or both doses. A number of oils also synergized the 1 h knockdown of natural pyrethrins. Of these, fir needle oil and cypress oils were the most successful at improving the speed-of-action of natural pyrethrins at both doses, with co-toxicity factors of 130 and 62, respectively. To further assess the co-toxicity factor method, we applied selected plant essential oils with variable doses of natural pyrethrins to calculate synergism ratios. Only the oils that produced synergistic co-toxicity factors produced statistically significant synergism ratios. This analysis demonstrated that the degree of co-toxicity factor correlated well with the degree of synergism ratio observed (Pearson correlation coefficient r = 0.94 at 2 µg/insect; r = 0.64 at 10 µg/insect) and that the co-toxicity factor is a useful tool in screening for synergistic activity.

scholarly journals Fumigant and Contact Toxicity and Oviposition Deterrent Effects of Plant Essential Oils onBemisia tabaci(Hemiptera: Aleyrodidae)

2016 ◽  
Vol 99 (4) ◽  
pp. 673-677 ◽  
Author(s):  
Tufail Ahmed Wagan ◽  
Yueping He ◽  
Wanlun Cai ◽  
Jing Zhao ◽  
Hongxia Hua
Keyword(s):  
Essential Oils ◽  
Oviposition Deterrent ◽  
Contact Toxicity ◽  
Plant Essential Oils
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