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Start date: 2020Subject: search.filters.subject.Housefly

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    Larvicidal efficacy and morphological abnormalities induced by plant essential oils against housefly (Musca domestica L.)
    (2026-03-01)
    Passara, H.
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    Sittichok, S.
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    Moungthipmalai, T.
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    Laosinwattana, C.
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    Thongsaiklaing, M.
    The results showed that the lowest complete pupation rate was 43.67%, indicating a significant inhibition of normal metamorphosis. Additionally, 56.33% of third-instar larvae were classified as malformed larvae (ML), dying before pupation and exhibiting severe morphological and physiological abnormalities. These findings suggest that the star anise nanoemulsion interferes with key developmental pathways, preventing larvae from reaching the pupal stage. Due to its high effectiveness and plant-based origin, this nanoformulation offers a promising, environmentally friendly alternative to conventional chemical insecticides. It has potential for further development into a natural larvicidal agent for use in integrated pest management (IPM) strategies targeting housefly populations. Future research should explore the underlying mechanisms of action and assess the efficacy and safety of this nanoemulsion under real-world conditions to support its application in sustainable vector control.
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    Adulticidal activity of star anise, turmeric, cloves and combinations against houseflies
    (2025-01-01)
    Sinthusiri, J.
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    Soonwera, M.
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    Puwanard, C.
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    Passara, H.
    ;
    Thongsaiklaing, T.
    The small droplet size could increase the absorbed ingredients and high stability. The star anise nanoemulsion was determined optimum efficacy, with a 1% concentration resulting in the highest knockdown and mortality rate of 100%. Its KT<inf>50</inf> and mortality effective values were 28 min and 36 times, respectively. Furthermore, the adult stage of houseflies is found to be susceptible to star anise nanoemulsion. In contrast, cypermethrin was less toxic to it, with a high KT<inf>50</inf> and resistance to adult houseflies. Consequently, the star anise nanoemulsion could be developed into an efficient and safe environment for controlling housefly populations.
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    Adulticidal synergy of two plant essential oils and their major constituents against the housefly Musca domestica and bioassay on non-target species
    (2024-03-15)
    Soonwera, Mayura
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    Moungthipmalai, Tanapoom
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    Puwanard, Cheepchanok
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    Sittichok, Sirawut
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    Sinthusiri, Jirisuda
    Single and mixture formulations of lemongrass (Cymbopogon citratus (DC.) Stapf.) and star anise (Illicium verum (J. Presl.)) essential oils (EOs) and their major constituents were assayed for their adulticidal activities against housefly, Musca domestica L., and two non-target species, stingless bee (Tetragonula pegdeni Schwarz) and guppy (Poecilia reticulata Peters). The efficacies of the mixture formulations were compared against those of the single formulations and 1.0% α-cypermethrin, a common synthetic insecticide. GC-MS analysis found that the major constituent of lemongrass EO was geranial (45.23%), and that of star anise EO was trans-anethole (93.23%). Almost all mixture formulations were more effective in adulticidal activity against housefly adults than single formulations and 1.0% α-cypermethrin. A mixture of 1.0% lemongrass EO + 1.0% trans-anethole exhibited the strongest synergistic insecticidal activity with a 100% mortality rate (KT<inf>50</inf> of 3.2 min and LT<inf>50</inf> of 0.07 h). The relative percentage increase in mortality rate over single formulations was between 1.6 and 91.9%. In addition, it was three times more effective than 1.0% α-cypermethrin. To find the mechanism of adulticidal action, scanning electron microscopy (SEM) was done to find morphological aberrations, such as antennal and mouthpart aberrations, after the houseflies were treated with 1.0% lemongrass EO + 1.0% trans-anethole. The aberrations included deformed and abnormal shape of arista and flagellum, change in labellum pigmentation, and damage to pseudotracheae. Regarding toxicity against non-target species, all single and mixture formulations were not toxic to the two non-target species, while 1.0% α-cypermethrin was highly toxic. To conclude, a mixture of 1.0% lemongrass EO + 1.0% trans-anethole can be an excellent, natural, sustainable housefly adulticidal agent.