Insecticidal Efficacy and Repellency of Trans-Anethole Against Four Stored-Product Insect Pests

Abstract

In this study, it was investigated that repellency and insecticidal efficacy of trans-anethole of botanical origin on major stored product on pests species, namely Sitophilus granarius (L.) (Coleoptera: Curculionidae), Sitophilus oryzae (L.) (Coleoptera: Curculionidae), Tribolium confusum Jacquelin du Val (Coleoptera, Tenebrionidae) and Tribolium castaneum (Herbst) (Coleoptera, Tenebrionidae). Repellency effect was evaluated by choice test in petri dishes, while the mortality effect was examined by exposure to wheat treated at different concentrations, such as 1, 2, 3, 4, and 8 µL trans anethole. In efficacy tests, after 72 hours exposure, the highest adult mortality was found on T. castaneum with a 60% mortality, while other test species showed no significant mortality. On the other hand, repellency tests revealed varying degree of repellency depending on the application dose of trans-anethole. It was determined that S. granarius belongs to repellent class III, while all of the other species fall under repellent class IV. F1 progeny decreased as trans-anethole concentration increased, and in this context 8 µL of trans-anethole is proved to be the optimal concentration causing maximum decrease in progeny production. Among the insect species tested, T. confusum was found to be the most sensitive to transanethole with 100% decrease in F1 progeny production. Our results indicate that trans-anethole can be used as a potential repellent for the control of major stored grain pests. Additionally, trans-anethole, by its contact efficacy, might be considered as a grain protectant against S. granarius, S. oryzae, T. confusum and T. castaneum.

Behavioral and Antennal Responses of Tribolium confusum to Varronia globosa Essential Oil and Its Main Constituents: Perspective for Their Use as Repellent

“…A similar repellent effect on T. confusum adults had been observed earlier with Lavandula spica essential oil and its main component linalool [9]. In addition to the repellent effect found in the present study, anethole also showed significant toxicity by fumigation against T. confusum and Sitophilus oryzae adults [28], as well as repellency to two Tribolium and two Sitophilus species [29]. Additionally, caryophyllene has been reported to have a repellent effect on T. castaneum [30].…”

Film seeds coating with hexane extracts from Illicium verum Hook.f. and Syzygium aromaticum (L.) Merrill & Perry for controlling Callosobruchus maculatus (F.) and Callosobruchus chinensis L

“…and Petry) could serve as a potential grain protectant against many insect pests 19,20 . Alkan and Erturn 21 reported that trans ‐anethole, with its efficacy in population suppression and its repellency, had strong potential as a bio‐pesticide against stored product insect pests. Trans ‐anethole is found naturally in many plant species of Apiaceae, namely anise, fennel, and star anise.…”

Synthesis, Antifungal Activity and 3D‐QSAR Study of Novel Anisaldehyde‐Derived Amide‐Thiourea Compounds

“…[3] The star anise fruit is rich in flavonoids, anisole, organic acids, anethole, and other active ingredients, [4] of which (E)-anethole (1-methoxy-4-((E)-propenyl)-benzene) has the highest content. (E)-Anethole, which is the major component in the essential oil of star anise and includes a phenylpropanoid C6-C3 active structural unit, [5] not only can be used as flavor and fragrance, but also shows various biological activities, such as anti-inflammatory, [6] antifungal, [7,8] antitumor, [9] insecticidal, [10] anti-oxidation, [11] etc. So (E)-anethole deserves further investigation in search of more potential bioactive derivatives.…”