Contact in-vivo larvicidal toxicity and histological studies of Indian herb essential oils loaded niosomes against Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae)

2021 ◽  
Author(s):  
Jose Gnanaleela Aswin Jeno ◽  
Soosaimanickam Maria Packiam ◽  
Ekambaram Nakkeeran
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Culex Quinquefasciatus ◽  
Histological Studies

Behavioral responses of Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) to four essential oils in Thailand

2012 ◽  
Vol 86 (2) ◽  
pp. 309-320 ◽  
Author(s):  
Kornwika Suwansirisilp ◽  
Suraphon Visetson ◽  
Atchariya Prabaripai ◽  
Somchai Tanasinchayakul ◽  
John P. Grieco ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Culex Quinquefasciatus ◽  
Behavioral Responses

scholarly journals Enantiomeric selectivity in behavioural and electrophysiological responses of Aedes aegypti and Culex quinquefasciatus mosquitoes

2011 ◽  
Vol 101 (5) ◽  
pp. 541-550 ◽  
Author(s):  
J.I. Cook ◽  
S. Majeed ◽  
R. Ignell ◽  
J.A. Pickett ◽  
M.A. Birkett ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Culex Quinquefasciatus ◽  
Mosquito Species ◽  
Flight Activity ◽  
Excitatory Effect ◽  
Electrophysiological Responses ◽  
Receptor Neurons ◽  
First Time ◽  
Enantiomeric Selectivity

Abstract1-Octen-3-ol is a kairomone for many haematophagous insects including mosquitoes. Numerous studies have examined the effects of racemic 1-octen-3-ol; however, few studies have investigated the role of individual enantiomers in relation to mosquito attraction. In the present study, we investigated the behavioural and electrophysiological responses of two mosquito species, Aedes aegypti and Culex quinquefasciatus, to individual enantiomers and mixtures of 1-octen-3-ol, employing a laboratory Y-tube olfactometer and single sensillum recordings. The olfactory receptor neurons of both Ae. aegypti and Cx. quinquefasciatus had a significantly higher response to the (R)-1-octen-3-ol enantiomer compared to the (S)-1-octen-3-ol enantiomer at 10−9 g μl−1 to 10−6 g μl−1. Behaviourally, Ae. aegypti was more responsive to the (R)-1-octen-3-ol enantiomer, showing an increase in flight activity and relative attraction compared to Cx. quinquefasciatus. The (R)-1-octen-3-ol enantiomer caused an increase in activation for Cx. quinquefasciatus. However, the most notable effect was from an (R:S)-1-octen-3-ol mixture (84:16) that caused significantly more mosquitoes to sustain their flight and reach the capture chambers (demonstrated by a reduced non-sustained flight activity), suggesting that it may have a behaviourally excitatory effect. For Cx. quinquefasciatus, a reduced relative attraction response was also observed for all treatments containing the (R)-1-octen-3-ol enantiomer, either on its own or as part of a mixture, but not with the (S)-1-octen-3-ol enantiomer. This is the first time enantiomeric selectivity has been shown for Ae. aegypti using electrophysiology in vivo. The implications of these results for exploitation in mosquito traps are discussed.

scholarly journals Repellent activity of three essential oils against dengue and filarial vector mosquitoes

2021 ◽  
Vol 918 (1) ◽  
pp. 012001
Author(s):  
D Meisyara ◽  
D Tarmadi ◽  
A Zulfitri ◽  
A Fajar ◽  
S K Himmi ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Insecticidal Activity ◽  
Culex Quinquefasciatus ◽  
Citrus Sinensis ◽  
Repellent Activity ◽  
Syzygium Aromaticum ◽  
Dengue Vector ◽  
Protection Index ◽  
Filarial Vector

Abstract Cymbopogon nardus, Syzygium aromaticum, and Citrus sinensis have been well known to possess insecticidal activity. Here, we investigated the repellent activity of individual of three essential oils (C. nardus, S. aromaticum, C. sinensis) and a combination of essential oils (C. nardus + C. sinensis, C. nardus + S. aromaticum, and C. sinensis + S. aromaticum) against a dengue vector, Aedes aegypti and a filarial vector, Culex quinquefasciatus. The essential oils (1 mg) were smeared evenly on the surface of the left arm (three volunteers) and then subjected to 25 females of A. aegypti and C. quinquefasciatus in the cage. The number of landed mosquitos was observed every hour for 7 hours to determine the protection index (PI). The result showed that individuals of three essential oils and a combination of essential oils generated > 90% of PI until 7 hours of application for both mosquitos species tested. Overall, the data demonstrated that individual of three essential oils, i.e., C. nardus, S. aromaticum, C. sinensis, and various combinations of essential oils (C. nardus + C. sinensis; C. nardus + S. aromaticum; C. sinensis + S. aromaticum) are promising as repellent agents against A. aegypti and C. quinquefasciatus.

Lavandula gibsoni and Plectranthus mollis essential oils: chemical analysis and insect control activities against Aedes aegypti, Anopheles sfttephensi and Culex quinquefasciatus

2013 ◽  
Vol 86 (4) ◽  
pp. 713-718 ◽  
Author(s):  
Roshan R. Kulkarni ◽  
Pushpa V. Pawar ◽  
Mary P. Joseph ◽  
Ambadas K. Akulwad ◽  
Avalokiteswar Sen ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Culex Quinquefasciatus ◽  
Insect Control

scholarly journals Essential Oil Compositions of Three Invasive Conyza Species Collected in Vietnam and Their Larvicidal Activities against Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus

Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4576
Author(s):  
Tran Minh Hoi ◽  
Le Thi Huong ◽  
Hoang Van Chinh ◽  
Dang Viet Hau ◽  
Prabodh Satyal ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Culex Quinquefasciatus ◽  
Insect Pests ◽  
Gas Chromatography Mass Spectrometry ◽  
Tropical Regions ◽  
Persistent Problem ◽  
Aerial Parts ◽  
Increasing Demand ◽  
Larvicidal Activities

Mosquito-borne infectious diseases are a persistent problem in tropical regions of the world, including Southeast Asia. Vector control has relied principally on synthetic insecticides, but these have detrimental environmental effects and there is an increasing demand for plant-based agents to control insect pests. Invasive weedy plant species may be able to serve as readily available sources of essential oils, some of which may be useful as larvicidal agents for control of mosquito populations. We hypothesize that members of the genus Conyza (Asteraceae) may produce essential oils that may have mosquito larvicidal properties. The essential oils from the aerial parts of Conyza bonariensis, C. canadensis, and C. sumatrensis were obtained by hydrodistillation, analyzed by gas chromatography–mass spectrometry, and screened for mosquito larvicidal activity against Aedes aegypti, Ae. albopictus and Culex quinquefasciatus. The essential oils of C. canadensis and C. sumatrensis, both rich in limonene (41.5% and 25.5%, respectively), showed notable larvicidal activities against Ae. aegypti (24-h LC50 = 9.80 and 21.7 μg/mL, respectively) and Ae. albopictus (24-h LC50 = 18.0 and 19.1 μg/mL, respectively). These two Conyza species may, therefore, serve as sources for alternative, environmentally-benign larvicidal control agents.

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