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Open AccessArticle
Ovicidal Toxicity and Morphological Changes in Housefly Eggs Induced by the Essential Oils of Star Anise and Lemongrass and Their Main Constituents
by
Hataichanok Passara
Hataichanok Passara 1,
Sirawut Sittichok
Sirawut Sittichok 1,2,
Jirisuda Sinthusiri
Jirisuda Sinthusiri 3,
Tanapoom Moungthipmalai
Tanapoom Moungthipmalai 2,
Cheepchanok Puwanard
Cheepchanok Puwanard 2,
Kouhei Murata
Kouhei Murata
Prof. Dr. Kouhei Murata is a professor at the School of Agriculture at Tokai University. He his in [...]
Prof. Dr. Kouhei Murata is a professor at the School of Agriculture at Tokai University. He obtained his degree from the Kyushu Tokai University in 1990. He has worked at Kyushu Tokai University since 1998 and has served as assistant, lecturer, associate professor, and professor. He also served as an associate professor at Tokai University from 2008 to 2009. Additionally, he is a member of the University Consortium Kumamoto, the International Exchange Committee, the Tateno Dam Monitoring Committee, the Arachnology Society of Japan, and secretary of the Ecological Society of Japan, councilor of the Kyushu Branch of the Ecological Society of Japan, etc. His research interests include insect ecology, applied entomology, insect ecology, and applied entomology.
4 and
Mayura Soonwera
Mayura Soonwera 1,2,*
1
Office of Administrative Interdisciplinary Program on Agricultural Technology, School of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand
2
Department of Plant Production Technology, School of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand
3
Community Public Health Program, Faculty of Public and Environmental Health, Huachiew Chalermprakiet University, Samut Prakan 10540, Thailand
4
School of Agriculture, Tokai University, Kumamoto 862-8652, Japan
*
Author to whom correspondence should be addressed.
Submission received: 20 May 2024
/
Revised: 20 June 2024
/
Accepted: 25 June 2024
/
Published: 27 June 2024
Simple Summary
Houseflies (Musca domestica: Diptera) are serious medical and veterinary vectors of several human and animal pathogens. Ovicides reduce breeding housefly populations and the risk of housefly vector diseases. The natural ovicides of plant essential oils (EOs) and their main ingredients were suitable and sustainable options at this time against houseflies. This study evaluated the housefly ovicidal activities of four single-component formulations and two combination formulations of essential oils and their main constituents. The efficacy of each treatment was compared to that of α-cypermethrin (a synthetic insecticide). Two combinations: lemongrass (Cymbopogon citratus) EO + trans-anethole and star anise (Illicium verum) EO + geranial, were at least 1.1 times as effective in ovicidal activity as all single-component treatments and α-cypermethrin. They induced embryonic damage and mortality inside the activities of the eggs, disrupting the eggshell, hatching line, aeropyles, plastron, and micropyle. More significantly, the two combinations and all single-component formulations were safe for two non-target aquatic species: guppy (Poecilia reticulate: Poeciliidae) and molly (Poecilia latipinna: Poeciliidae), while α-cypermethrin was not safe for them. The two combinations could be developed into an effective and safe natural ovicide for reducing housefly populations and managing housefly vector diseases.
Abstract
This study attempted to evaluate the ovicidal activity of single-component formulations and combination formulations of lemongrass and star anise essential oils (EOs) and their main constituents against housefly eggs. The efficacies of the combinations were compared with those of single-component formulations and α-cypermethrin. Safety bioassays of all treatments and α-cypermethrin on non-target predators—guppy and molly—were conducted. Two combinations: 1% lemongrass EO + 1% trans-anethole and 1% star anise EO + 1% geranial, exhibited a strong ovicidal activity with an inhibition rate of 94.4 to 96.2%. They were 1.1 times as effective as α-cypermethrin. The two combinations also showed high synergistic activity compared to single-component formulations, with a high synergistic index and a high increased inhibition value of 37.4 to 57.7%. All EO treatments were benign for all non-target aquatic species with a high 50% lethal time (LT50) and safety index. In contrast, α-cypermethrin was highly toxic to them with a low LT50. The morphological abnormalities observed in housefly eggs at death were those such as the shrivelling of the eggs, aberrations and damage to the eggshells, hatching lines, aeropyles, plastron, and micropyle. The potential of these two combinations as a cypermethrin replacement is compelling.
Share and Cite
MDPI and ACS Style
Passara, H.; Sittichok, S.; Sinthusiri, J.; Moungthipmalai, T.; Puwanard, C.; Murata, K.; Soonwera, M.
Ovicidal Toxicity and Morphological Changes in Housefly Eggs Induced by the Essential Oils of Star Anise and Lemongrass and Their Main Constituents. Insects 2024, 15, 481.
https://doi.org/10.3390/insects15070481
AMA Style
Passara H, Sittichok S, Sinthusiri J, Moungthipmalai T, Puwanard C, Murata K, Soonwera M.
Ovicidal Toxicity and Morphological Changes in Housefly Eggs Induced by the Essential Oils of Star Anise and Lemongrass and Their Main Constituents. Insects. 2024; 15(7):481.
https://doi.org/10.3390/insects15070481
Chicago/Turabian Style
Passara, Hataichanok, Sirawut Sittichok, Jirisuda Sinthusiri, Tanapoom Moungthipmalai, Cheepchanok Puwanard, Kouhei Murata, and Mayura Soonwera.
2024. "Ovicidal Toxicity and Morphological Changes in Housefly Eggs Induced by the Essential Oils of Star Anise and Lemongrass and Their Main Constituents" Insects 15, no. 7: 481.
https://doi.org/10.3390/insects15070481
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