Green Pesticides: Essential Oils as Biopesticides in Insect-pest
Management

Mossa, Abdel‐Tawab H.

doi:10.3923/jest.2016.354.378

Cited by 249 publications

(172 citation statements)

References 122 publications

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“…Likewise, other studies verified disturbance in mobility of insects exposed to lambda-cyhalothrin, correlated with increased or decreased walking time after insecticide exposure (Desneux et al 2007;Cordeiro et al 2010). According to the scientific literature, essential oils (Mossa 2016) and lambda-cyhalothrin (Desneux et al 2004b) act on the insect nervous system. Therefore, we observed significant differences in preying and plant feeding time of N. tenuis among the treatments (Fig.…”

Section: Discussionmentioning

confidence: 89%

Botanical insecticide and natural enemies: a potential combination for pest management against Tuta absoluta

et al. 2019

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The development of new strategies to control pest insects is required, in combination with conventional pesticides or replacing them. Essential oils produced from botanical extracts used in management programs should be effective against pests and selective to natural enemies. Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most destructive pests of solanaceous crops in the world, and a possible management strategy consists of releases of the predator Nesidiocoris tenuis (Hemiptera: Miridae), along with botanical applications. The objective of this study was to evaluate the effects of Prev-am ® oil on T. absoluta offspring, either with or without the predator N. tenuis, as well as the oil's effects on N. tenuis predatory behavior and longevity. The oil's effects were compared with distilled water (control) and a synthetic pesticide (lambdacyhalothrin). The response of populations to lambda-cyhalothrin was similar to that with Prev-am ® , compared to the control, showing that N. tenuis had higher capacity to reduce T. absoluta populations. The survival analysis of predators exposed to Prev-am ® indicates that none of the concentrations differed significantly from the control. In addition, the canonical variate analysis indicated significant overall differences in the predator behavior submitted to different treatments, suggesting that synthetic pesticide treatment affected predator behavior when compared to control and Prev-am ® . Reduction in predatory voracity of N. tenuis adults exposed to leaves treated with pesticide and biopesticide was significant compared to the control treatment. The results obtained could improve IPM programs against T. absoluta through the Prev-am ® applications and N. tenuis releases.Keywords Natural product · Predatory mirid · South American tomato pinworm · Ecotoxicology · Biological control Key message• New strategies based on the use of natural enemies and biopesticides to control Tuta absoluta are desirable for integrated pest management (IPM). • The combination of Nesidiocoris tenuis with Prev-am ® (at half of the recommended concentration) showed enhanced efficacy against T. absoluta. • Presence of N. tenuis significantly reduced T. absoluta population growth. • Lambda-cyhalothrin and Prev-am ® could disturb behavioral response of N. tenuis.

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Section: Discussionmentioning

confidence: 89%

Botanical insecticide and natural enemies: a potential combination for pest management against Tuta absoluta

et al. 2019

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“…In addition, the toxicity mechanism of Thymus vulgaris essential oil and thymol may be from the neurotoxic effect. These chemicals can interact with neuromodulator octopamine, a neurotransmitter unique to insects, and also induce neurotoxicity via effects on gated chloride channels GABA …”

Section: Discussionmentioning

confidence: 99%

“…These chemicals can interact with neuromodulator octopamine, a neurotransmitter unique to insects, and also induce neurotoxicity via effects on gated chloride channels GABA. 12,33 Concerning the stability, thymol has antioxidant property and can be susceptible to degradation by temperature, light and oxygen to generate phenoxide radicals that further proceed to oxidative and polymerization reactions, 34,35 which may result in a loss of insecticidal efficacy. This phenomenon is consistent with the results obtained by Pavela that post-application temperature affected to the insecticidal activity of thymol and Thymus vulgaris oil against Spodoptera littoralis and Culex quinquefasciatus larvae.…”

Section: Discussionmentioning

confidence: 99%

Synthesis of thymyl esters and their insecticidal activity against Spodoptera litura (Lepidoptera: Noctuidae)

Tharamak

Yooboon

Pengsook

et al. 2019

Pest Management Science

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BACKGROUND Thymol, a natural phenolic monoterpene originating from Thymus vulgaris, is recognized as a safe and potent botanical insecticide to many insects. The structural modification of thymol into thymyl esters is a potential approach for the development of novel insecticides, which showed more toxicity than thymol. However, there are no reports on the insecticidal activity of thymyl esters to control Spodoptera litura. RESULTS Thymol was structurally modified into ten thymyl esters by esterification using a new reagent, PPh3/Br3CSO2Ph. The insecticidal activity of these compounds was examined against the second instars of Spodoptera litura using a topical application. Among the ten thymyl esters evaluated, thymyl cinnamate was the most toxic with LD50 = 0.41 and 0.34 μg/larva after 24 and 48 h posttreatment, respectively. In addition, thymyl cinnamate‐treated larvae showed increasing carboxylesterase and acetylcholinesterase activities in vivo experiment, whereas glutathione S‐transferase activity showed no significant difference. CONCLUSION Thymyl cinnamate were first reported to exhibit toxicity against S. litura 2.41–2.46 fold more efficient than thymol. However, the detailed biochemical interactions are necessary for further development of novel insecticides. © 2019 Society of Chemical Industry

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“…These are the main reasons that push the development of more sustainable methods, e.g. the use of natural plant compounds for pest management [7]. Essential oils (EOs) are complex mixtures of compounds that are produced in various organs (flowers, leaves, bark, roots, rhizomes, fruits and seeds) of aromatic plants.…”

Section: Introductionmentioning

confidence: 99%

Contact application of Lamiaceae botanicals reduces bean weevil infestation in stored beans

Jevremović¹,

Lazarević

Kostić

et al. 2019

ARCH BIOL SCI BELGRA

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The bean weevil (Acanthoscelides obtectus, Say) is a serious pest of stored bean seeds. Bean weevil control relies heavily on the use of synthetic insecticides. In the search for a sustainable alternative, the residual contact toxicity and anti-oviposition activity of thyme (Thymus vulgaris L.), rosemary (Rosmarinus officinalis L.) and basil (Ocimum basilicum L.) essential oils as well as their dominant components (thymol, α-pinene, 1,8-cineole and linalool) were tested against A. obtectus adults. Out of the seven tested botanicals, T. vulgaris oil, thymol and linalool exhibited the highest toxic potential (>90% mortality). Females were less susceptible than males. The insecticidal activity of these botanicals was much greater when they were applied on glass compared to direct application to the bean. All tested botanicals reduced oviposition by bean weevil females. T. vulgaris oil, thymol and α-pinene also deterred bean weevil oviposition, as revealed by a two-choice test. Our research shows that T. vulgaris oil and thymol are promising and sustainable alternatives to synthetic pesticides for protecting stored beans against the bean weevil.

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Green Pesticides: Essential Oils as Biopesticides in Insect-pest Management

Cited by 249 publications

References 122 publications

Botanical insecticide and natural enemies: a potential combination for pest management against Tuta absoluta

Botanical insecticide and natural enemies: a potential combination for pest management against Tuta absoluta

Synthesis of thymyl esters and their insecticidal activity against Spodoptera litura (Lepidoptera: Noctuidae)

Contact application of Lamiaceae botanicals reduces bean weevil infestation in stored beans

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