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Toxicity of several botanical essential oils and their combinations against females of Aedes albopictus(Skuse) and Anopheles minimus(Theobald): Oviposition deterrent, ovicidal and adulticidal efficacies

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Asian Pacific Journal of Tropical Biomedicine 2019年第1期9卷 29-39页

作者： Nuttavich Cotchakaew mayura soonwera Department of Plant Production Technology Faculty of Agricultural Technology King Mongkut's Institute of Technology Ladkrabang

Objective: To investigate the efficacies of 12 essential oil(EO) formulations from three Zingiberaceae plants(Alpinia galanga, Curcuma zedoaria, and Zingiber cassumunar) individually and in combination with an augmenting Eucalyptus globulus(E. globulus) EO against females of Aedes albopictus(Ae. albopictus) and Anopheles minimus(An. minimus). Methods: These formulations were evaluated for their ovicidal, oviposition deterrent and adulticidal activities against Ae. albopictus and An. minimus by a topical method, a double-choice method and a WHO susceptibility test, respectively. Results: It was found that all formulations of Zingiberaceae plants EOs augmented with E. globulus EO were more effective in oviposition deterrent, ovicidal, and adulticidal activities against the two mosquito species than all of the formulations used without E. globulus EO. Their oviposition deterrent, ovicidal and adulticidal activities were equivalent to those of 10% w/v cypermethrin. In contrast, 70% v/v ethyl alcohol as a control alone was not effective at all. The highest synergistic effect in effective repellency against Ae. albopictus was achieved by 5% Alpinia galanga EO + 5% E. globulus EO and against An. minimus was 5% Zingiber cassumunar EO + 5% E. globulus EO. Moreover, the highest synergistic effects in ovicidal activities against Ae. albopictus and An. minimus were achieved by 10% Zingiber cassumunar EO + 10% E. globulus EO and 5% Curcuma zedoaria EO + 5% E. globulus EO, respectively. For the adulticidal activities, the highest synergistic effect against two mosquitoes was achieved by 5% Curcuma zedoaria EO + 5% E. globulus EO. Conclusions: These results suggest that Zingiberaceae plant EOs augmented with E. globulus EO have a high potential to be developed into oviposition deterrent, ovicidal, and adulticidal agents for controlling populations of Ae. albopictus and An. minimus.

关键词： Aedes albopictus Anopheles minimus Plant essential oil Ovicide Oviposition deterrent Adulticide

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Adulticidal, larvicidal, pupicidal and oviposition deterrent activities of essential oil from Zanthoxylum limonella Alston(Rutaceae) against Aedes aegypti(L.) and Culex quinquefasciatus(Say)

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Asian Pacific Journal of Tropical Biomedicine 2017年第11期7卷 967-978页

作者： mayura soonwera Siriporn Phasomkusolsil Department of Plant Production Technology Faculty of Agricultural TechnologyKing Mongkut's Institute of Technology LadkrabangBangkok 10520Thailand Department of Entomology Armed Forces Research Institute of Medical SciencesBangkok 10400Thailand

Objective: To evaluate adulticidal, larvicidal and oviposition deterrent response of the essential oil from dried Zanthoxylum limonella(Z. limonella) fruit against Aedes aegypti(Ae. aegypti) and Culex quinquefasciatus(Cx. quinquefasciatus).Methods: Z. limonella oil was tested by biological assays at 1%, 5% and 10% concentrations in ethanol. Adulticidal efficacy was tested against the 2–3 day old adult females. Larvicidal activity was tested against immature stage of mosquitoes. Oviposition deterrence of the oil was evaluated on gravid females.Results: The adult mortality was observed after 24 h with the LC50 of 6.0% for Ae.aegypti, and 5.7% for Cx. quinquefasciatus. Larvicidal bioassay was carried out with the 10% Z. limonella oil against immature stages of Ae. aegypti and Cx. quinquefasciatus,which caused 100% mortality after 12 h and 24 h. In the larvicidal experiment,Z. limonella showed effective result at 1%, 5% and 10% concentrations with the values of LT50 Ae. aegypti = 9.78, 5.61, 0.24 h for larvae and LT50= 64.08, 21.23 h for pupae;Cx. quinquefasciatus had LT50= 28.46, 20.25, 1.01 h for larvae and LT50= 67.52, 27.96,4.11 h for pupae, respectively. Oviposition deterrence of the oil was evaluated on gravid females. In the study, 10% Z. limonella showed 100% repellency for Ae. aegypti and99.53% for Cx. quinquefasciatus. Likewise, oviposition activity indexes of these oil concentrations were all negative values ranging from–0.89 to-1.00 for Ae. aegypti and–0.64 to–0.99 for Cx. quinquefasciatus. The oviposition activity indexes values revealed that Z. limonella oil has deterrent effect, and it caused a remarkable negative response resulting in very few eggs.Conclusions: This result indicates that Z. limonella oil can be used as an effective adulticide, larvicide and oviposition deterrent against Ae. aegypti and Cx. quinquefasciatus.

关键词： Zanthoxylum limonella Aedes aepypti Culex quinquefasciatus Adulticide Larvicide Oviposition deterrent

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

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Asian Pacific Journal of Tropical Biomedicine 2018年第4期8卷 217-225页

作者： Aksorn Chantawee mayura soonwera Department of Plant Production Technology Faculty of Agricultural Technology King Mongkut's Institute of Technology Ladkrabang

Objective:To evaluate larvicidal,pupicidal and oviposition deterrent activities of four plant essential oils from Alpinia galanga(L.)Willd rhizome,Anethum graveolens L.(An.graveolens)fruit,Foeniculum vulgare Mill.fruit,and Pimpinella anisum L.fruit against Aedes aegypti(Ae.aegypti).Methods:Four essential oils at 1%,5%and 10%concentrations were assessed for insecticidal activity against larvae and pupae of Ae.aegypti,following the procedure of a dipping method assay.Oviposition deterrent activity of four essential oils was evaluated on gravid female of Ae.aegypti by a dual-choice oviposition bioassay.Results:The results revealed that An.graveolens oil provided the strongest larvicidal activity against Ae.aegypti among four tested plant essential oils with the highest mortality rate of 100%and LC_(50)value of-0.3%.From the pupicidal experiment,An.graveolens also showed the highest toxicity against Ae.aegypti pupae with the highest mortality rate of 100%at 72 h and LC_(50)value of2.9%.In addition,10%An.graveolens had an oviposition deterrent effect against Ae.aegypti with effective repellency of 100%and an oviposition activity index of-1.0.Conclusions:An.graveolens oil has a good potential as a larvicidal,pupicidal and oviposition deterrent agent for controlling Ae.aegypti.

关键词： Aedes aegypti Plant essential oils Larvicide Pupicide Oviposition deterrent

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Larvicidal, pupicidal and oviposition deterrent activities of essential oils from Umbelliferae plants against house fly Musca domestica

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Asian Pacific Journal of Tropical Medicine 2018年第11期11卷 621-629页

作者： Aksorn Chantawee mayura soonwera Department of Plant Production Technology Faculty of Agricultural Technology King Mongkut's Institute of Technology Ladkrabang

To evaluate the toxicity against house fly Musca domestica L.(M. domestica)-larvicidal, pupicidal, and oviposition deterrent activities of essential oils(EOs) from five plants: Anethum graveolens L.(A. graveolens), Centratherum anthelminticum L.(C. anthelminticum), Foeniculum vulgare Mill.(F. vulgare), Pimpinella anisum L.(P. anisum), and Trachyspermum ammi L.(T. ammi) Sprague. Methods: Dipping, topical and dual-choice assays were performed by using each EO at three concentrations(1%, 5% and 10%) as well as cypermethrin(positive control) and ethyl alcohol(negative control) in order to determine their larvicidal, pupicidal and oviposition deterrent activities against M. domestica mortality rate and morphogenic abnormality of larvae and pupae were recorded after 3 and 10 days of incubation. Oviposition deterrent activity was recorded for 5 consecutive days from the beginning of the assay. Results: All EOs at the highest concentration(10%) were highly effective in oviposition deterrent with 100% effective repellency and an oviposition activity index of-1.00. Ten percent of F. vulgare oil exhibited the highest efficacy against the larvae with 89.6% mortality rate at 3 days and an LC50 value of 5.4%. Ten percent of A. graveolens and T. ammi oils showed the highest efficacy against the pupae with 100% mortality and an LC50 value ranging from 1.81%-2.24%. Conclusions: These results indicate that F. vulgare, A. graveolens and T. ammi EOs are effective larvicidal, pupicidal and oviposition deterrent agents against house fly M. domestica.

关键词： Musca domestica Larvicide Pupicide Plant essential oil Umbelliferae plant

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Epidemiology of pediculosis capitis among schoolchildren in the eastern area of Bangkok,Thailand

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Asian Pacific Journal of Tropical Biomedicine 2012年第11期2卷 901-904页

作者： Watcharawit Rassami mayura soonwera Entomology and Environment Program Plant Production TechnologyFaculty of Agricultural TechnologyKing Mongkut's Institute of Technology LadkrabangLadkrabangBangkok Thailand

Objective:To determine the prevalence of infestation with head lice in primary schoolchildren in the eastern area of Bangkok,Thailand.Methods:The present study was to determine the head lice infestation(Pediculosis) levels in primary schoolchildren,during May,2011 to July, 2011,A total of 3747 schoolchildren aged 5-12 years old from 12 selected primary school of Ladkrabang district,the eastern area of Bangkok were examined for head lice.Pediculosis was defined as the presence of at least on living adult,nymph and viable egg.Results:The overall head lice infestation rate was 23.32%and infestation rate was higher in girls(47.12%) than in boys(0%).The infestation rate among schoolchildren varied from 12.62%to 29.76%.The infestation rate among girls varied from 26.07%(12 years old group) to 55.89%(8 years old group).Conclusions: Pediculosis is a common public healtli problem affecting primary schoolchildren in eastern area of Bangkok and those levels are epidemic importance.

关键词： Pediculosis capitis Epidermiology Schoolchildren Eastern area of Bangkok

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New Thai herbal shampoos as pediculicides for killing head louse, Pediculus humanus capitis De Geer(Phthiraptera)

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Asian Pacific Journal of Tropical Biomedicine 2018年第2期8卷 106-112页

作者： Sirawut Sittichok Orawan Wongnet mayura soonwera Department of Plant Production Technology Faculty of Agricultural TechnologyKing Mongkut's Institute of Technology Ladkrabang

Objective: To evaluate the efficacy of Thai herbal shampoos [Cartoxylum formosum(C.formosum) + eucalyptus essential oil(EO), C. formosum + citrus EO, Solanum trilobatum+ eucalyptus EO, Solanum trilobatum + citrus EO, Moringa oleifera + eucalyptus EO and Moringa oleifera + citrus EO] for killing all stages of Pediculus humanus capitis(Phthiraptera).Methods: A filter paper contact method was applied with three concentrations(0.05, 0.10 and 0.20 mL/cm^2) of each Thai herbal shampoo as well as permethrin pediculicide(positive control) and drinking water(negative control) against eggs, nymphs and adults of Pediculus humanus capitis. Mortality rates of the eggs were recorded after 7 days of incubation while those of nymphs and adults were recorded after 5 minutes of contact. Results: All herbal shampoos at the high concentration were highly effective against nymphs and adults, but not effective against the eggs. C. formosum + eucalyptus EO and C. formosum + citrus EO shampoos at all concentrations exhibited the highest efficacy against nymphs and adults with100% mortality rate at 5 min and LC_(50) values of 0.004 and 0.005 mL/cm^2, respectively. All formulation of Solanum trilobatum and Moringa oleifera shampoos added with eucalyptus EO showed mortality rates against nymphs at 92.0%-100.0% and 76.0%-100.0% and against adults at 84.0%-100.0% and 20.0%-32.0%, respectively. Permethrin pediculicide was not effective against the eggs, but showed 68.0%-92.0% and 28.0%-60.0% mortality rates against nymphs and adults. Conclusions: These results indicate that C. formosum + eucalyptus EO shampoo can be used as an effective nymphicide and adulticide against Pediculus humanus capitis.

关键词： Pediculus humanus capitis Thai herbal shampoo Cratoxylum formosum+eucalyptus essential oil shampoo Ovicicide Nymphicide Adulticide

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