Alternative control of <scp><i>Aedes aegypti</i></scp> resistant to pyrethroids: lethal and sublethal effects of monoterpene bioinsecticides

Silva, Indira Ma; Martins, Gustavo Ferreira; Melo, Carlisson R.; Santana, Alex Fabiano Bertollo; Faro, Ruan R.N.; Blank, Arie Fitzgerald; Alves, Péricles Barreto; Picanço, Marcelo C.; Cristaldo, Paulo F.; Araújo, Ana Paula Albano; Bacci, Leandro

doi:10.1002/ps.4801

Cited by 32 publications

(14 citation statements)

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“…Significant percentages of other constituents were also identified, such as spathulenol (6.68% ± 0.15%), viridiflorene (4.23% ± 0.17%), β-caryophyllene (4.01% ± 0.22%), and limonene (3.75% ± 0.07%). The occurrence of sulcatyl acetate as the major constituent of A. trilobata oil is in agreement with data reported by Santos et al (2014) (23.31% ± 0.28%) and Silva et al (2018) (25.64% ± 0.45%), who also found this compound to be the major constituent in oils from this species.…”

Section: Ethics Statementsupporting

confidence: 92%

“…A previous investigation of the chemical profile of the essential oil from A. trilobata occurring in the Caatinga biome of northeastern Brazil revealed sulcatyl acetate (6-methyl-5-hepten-2-yl acetate) as the main component, followed by limonene, linalool, and p-cymene (Santos et al 2014). Moreover, an evaluation of its insecticidal activity demonstrated that this oil is an excellent alternative for use in controlling Aedes aegypti L. larvae and adults (Silva et al 2018). Recently, Oliveira et al (2017) found that both the oil and its main component exhibited fast, efficient activity against Atta sexdens L. and Acromyrmex balzani Emery through fumigation.…”

Section: Introductionmentioning

confidence: 99%

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Acaricidal properties of the essential oil from Aristolochia trilobata and its major constituents against the two-spotted spider mite (Tetranychus urticae)

et al. 2018

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Tetranychus urticae Koch is a polyphagous pest that is widely distributed throughout the world and causes considerable damage to crops in northeastern Brazil. The effects of the essential oil from Aristolochia trilobata L., selected constituents, and an artificial mixture (sulcatyl acetate, limonene, linalool, and p-cymene) on T. urticae in terms of fumigant action, residual contact, and fecundity were investigated under laboratory conditions. The results were compared with eugenol, Azamax®, and Ortus® as positive controls. Gas chromatography–mass spectrometry analysis of the oil revealed a predominance of monoterpenes, with sulcatyl acetate (24.57% ± 0.40%) as the major component, followed by linalool (10.80% ± 0.27%). Toxicity varied with the method employed. Through fumigation, the A. trilobata oil was about 2.18-fold more toxic than the artificial mixture, whereas no significant difference between the two products was found with regard to residual contact. Regarding the selected compounds, the mite was most susceptible to linalool and p-cymene by fumigation and residual contact, respectively. The plant-based (Azamax®) and synthetic (Ortus®) acaricidal agents were more toxic than the products tested. Moreover, low concentrations of the products investigated herein had no effect on mite survival, but a significant effect was found on the quantity of eggs laid by females. The A. trilobata oil and artificial mixture are promising natural acaricidal agents that have more than one mode of action (fumigation and residual contact) and exert an effect on fecundity. However, further studies are needed to evaluate the cost–benefit ratio for use on organic crops and protected environments in northeastern Brazil.

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Section: Ethics Statementsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Acaricidal properties of the essential oil from Aristolochia trilobata and its major constituents against the two-spotted spider mite (Tetranychus urticae)

et al. 2018

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“…However, essential oils are also known to cause a variety of sublethal effects that are detrimental to insect survival and reproduction. These effects include repellency, irritability, altered respiratory activity, changes in swimming pattern, and reduced adult emergence, longevity, fertility, fecundity and natality [49][50][51][52]. Future studies evaluating both the lethal and sublethal effects of L. scoparium essential oil, its fractions and emulsions could reveal the full spectrum of their biological effects against mosquitoes.…”

Section: Discussionmentioning

confidence: 99%

Leptospermum scoparium essential oil is a promising source of mosquito larvicide and its toxicity is enhanced by a biobased emulsifier

et al. 2020

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Synthetic pesticides are the cornerstone of vector-borne disease control, but alternatives are urgently needed to tackle the growing problem of insecticide resistance and concerns over environmental safety. Leptospermum scoparium J.R. Forst and G. Forst (manuka) essential oil and its four fractions were analyzed for chemical composition and toxicity against Aedes aegypti larvae. The use of bio-based amylose-N-1-hexadecylammonium chloride inclusion complexes (Hex-Am) as an emulsifier for L. scoparium essential oil was also investigated. Fraction 1 was inactive, fractions 2 (LC 50 = 12.24 ppm) and 3 (LC 50 = 20.58 ppm) were more toxic than the whole essential oil (LC 50 = 47.97 ppm), and fraction 4 (LC 50 = 35.87 ppm) had similar toxicity as the whole essential oil. Twenty-one chemical constituents were detected in L. scoparium essential oil compared to 16, 5, 19 and 25 chemical constituents in fractions, 1, 2, 3 and 4 respectively. The two most dominant chemical constituents were calamenene (17.78%) and leptospermone (11.86%) for L. scoparium essential oil, calamenene (37.73%) and ledene (10.37%) for fraction 1, leptospermone (56.6%) and isoleptospermone (19.73) for fraction 2, cubenol (24.30%) and caryophyllene oxide (12.38%) for fraction 3, and γ-gurjunene (21.62%) and isoleptospermone (7.88%) for fraction 4. Alpha-pinene, ledene, and aromandendrene were 2-7 times less toxic than the whole essential suggesting that the toxicity of L. scoparium essential oil was either due to other chemical constituents that were not tested or due synergist interactions among chemical constituents. Leptospermum scoparium essential oil-Hex-Am emulsion (LC 50 = 29.62) was more toxic than the whole essential oil. These findings suggest that L. scoparium essential oil is a promising source of mosquito larvicide and that Hex-Am is an excellent emulsifier for L. scoparium essential oil for use as a larvicide.

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“…Low concentrations of insecticides can have sublethal effects on insects and are often involved in the development of insecticide resistance [8,9,10]. Sublethal effects of insecticides can inhibit or stimulate the growth of insect populations via their effects on development, survival, and reproduction rate of insects, which vary according to the species and the insecticide used [11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae)

Cao

Yang

Zhang

et al. 2019

Insects

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The Western flower thrips (WFT, Frankliniella occidentalis) is a global polyphagous pest that is often dependent on chemical control. Imidacloprid has been a commonly used chemical insecticide for effective control of WFT. Low concentrations of insecticides can have sublethal effects on individual insects. However, no more information is known about the effects of exposure at low concentrations of imidacloprid on WFT. Here, we evaluated the effects of imidacloprid at sublethal concentrations on WFT population growth parameters. We first exposed the parental generation to LC10 (56.8 mg/L) and LC25 (79.2 mg/L) concentrations of imidacloprid. We then quantified various parameters related to the development, survival, and fecundity of the F1 generation also exposed to these same concentrations. The development time of the treatment groups exposed to imidacloprid was significantly shorter than the control group, and the net reproductive rate (R0) was significantly higher for treatment groups than for the control group. For both variables, there was no significant difference between LC10 and LC25 exposure. The generational survival rate was significantly higher for the control group, followed by the LC10 treatment group and then the LC25 treatment group. However, the opposite was true for fecundity and intrinsic rate of increase (rm) of WFT. In summary, exposure to low concentrations of imidacloprid was positive for the population development of WFT, which may contribute to the development of insecticide resistance and cause resurgence in WFT populations.

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Alternative control of Aedes aegypti resistant to pyrethroids: lethal and sublethal effects of monoterpene bioinsecticides

Cited by 32 publications

References 48 publications

Acaricidal properties of the essential oil from Aristolochia trilobata and its major constituents against the two-spotted spider mite (Tetranychus urticae)

Acaricidal properties of the essential oil from Aristolochia trilobata and its major constituents against the two-spotted spider mite (Tetranychus urticae)

Leptospermum scoparium essential oil is a promising source of mosquito larvicide and its toxicity is enhanced by a biobased emulsifier

Sublethal Effects of Imidacloprid on the Population Development of Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae)

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