Toxicity and residual effects of insecticides on <i>Ascia monuste</i> and predator <i>Solenopsis saevissima</i>

Araújo, Tamíris Alves de; Picanço, Marcelo C.; Ferreira, Dalton de Oliveira; Campos, Júlia N. D.; Arcanjo, Lucas de Paulo; Silva, Gerson A

doi:10.1002/ps.4603

Cited by 21 publications

(22 citation statements)

References 37 publications

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“…Although compounds 1, 2, 8, and 16 caused reasonable mortality (57-70 %) in the screening bioassay, according to Brazilian legislation, products to be considered effective for pest control are required to lead mortalities � 80 %. [21] [22] Therefore, the mortalities caused by compounds 15 and 17 (> 80 %) indicate that these compounds have the potential to be used in R. dominica control.…”

Section: Resultsmentioning

confidence: 99%

Toxicity and Sublethal Effects of Phthalides Analogs to Rhyzopertha dominica

Farias

Araújo

Resende

et al. 2019

Chemistry & Biodiversity

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Phthalides and their precursors have demonstrated a large variety of biological activities. Eighteen phthalides were synthesized and tested on the stored grain pest Rhyzopertha dominica. In the screening bioassay, compounds rac‐(2R,2aS,4R,4aS,6aR,6bS,7R)‐7‐bromohexahydro‐2,4‐methano‐1,6‐dioxacyclopenta[cd]pentalen‐5(2H)‐one (15) and rac‐(3R,3aR,4R,7S,7aS)‐3‐(propan‐2‐yloxy)hexahydro‐4,7‐methano‐2‐benzofuran‐1(3H)‐one (17) showed mortality similar to the commercial insecticide, Bifenthrin® (≥90 %). The time (LT50) and dose (LD50) necessary to kill 50 % of the R. dominica population were determined for the most efficacious phthalides 15 and 17. Compound 15 presented the lowest LD50 (1.97 μg g−1), being four times more toxic than Bifenthrin® (LD50=9.11 μg g−1). Both compounds presented an LT50 value equal to 24 h. When applied at a sublethal dose, both phthalides (especially compound 15), reduced the emergence of the first progeny of R. dominica. These findings highlight the potential of phthalides 15 and 17 as precursors for the development of insecticides for R. dominica control.

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Section: Resultsmentioning

confidence: 99%

Toxicity and Sublethal Effects of Phthalides Analogs to Rhyzopertha dominica

Farias

Araújo

Resende

et al. 2019

Chemistry & Biodiversity

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“…The anthranilic diamide (chlorantraniliprole) was poorly toxic to B. lecheguana and P. sylveirae, probably due to the greater affinity with the lepidoptera ryanodine receptors, which justifies the selectivity of this group to B. lecheguana and P. sylveirae adults (Jeschke, 2016;Araujo et al, 2017). In addition, low toxicity may also relate to the increased rate of metabolism of the compound by wasps compared to the pest or target changing of the insecticide against natural enemies (Yu, 1987).…”

Section: Discussionmentioning

confidence: 99%

“…The mechanism that elucidates the physiological selectivity of these insecticides to P. sylveirae and B. lecheguana wasps are not well understood due to lack of biochemical and physiological studies. Araujo et al (2017) found that indoxacarb and spinosad caused low mortality of Solenopsis saevissima (Smith, 1855) (Hymenoptera: Formicidae). Spinosad selectivity has been reported for most predators.…”

Section: Discussionmentioning

confidence: 99%

“…Physiological selectivity of the insecticides from the anthranilic diamide group (chlorantraniliprole) to P. sylveirae, B. lecheguana and Polybia sp., growth regulator (buprofezin) in hymenoptera insects was observed by Fernandes et al (2013) and Araujo et al (2017). High toxicity of pyrethroids (deltamethrin) in dose (100%) and subdose (50%) to P. sylveirae and B. lecheguana was observed by Bacci et al (2009).…”

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confidence: 96%

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Physiological selectivity of insecticides from different chemical groups and cuticle thickness of Protonectarina sylveirae (Saussure) and Brachygastra lecheguana (Latreille)

et al. 2019

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O uso de inseticidas mais tóxicos para uma praga do que a saúde natural pode favorecer o salvamento desses organismos benéficos. Este estudo teve como objetivos fisiológicos distanciadores de inseticidas de separações científicas para Vespidae Protonectarina sylveirae (Saussure, 1854) e Brachygastra lecheguana. (Latterille, 1824) e espessura de cutícula para avaliação da tolerância entre os 2 anos estes mesmos inseticidas. Como imersas foram folhas de milho (10 x 10 cm) em solução inseticida em dose (100%), subdose (50%) e água destilada (controle) por 5 segundos. Nós podemos ler as folhas e depois embalamos em placas de Petri.Como 20 vespas, por placa, receberam 10% de mel e as placas foram fechadas com tecido de organza fino e elastificadas. Após 24 horas, avaliamos uma porcentagem de vespas mortas. O inseticida alfa-cipermetrina foi altamente tóxico para P. sylveirae e B. lecheguana em dose (100%) e subdose (50%). Os inseticidas Novaluron, chlorantraniliprole, spinosad e indoxacarb foram pouco tóxicos para P. sylveirae e B. lecheguana. dose (100%) e subdose (50%). A alta toxicidade dos inseticidas metomil + novalurom, clorantraniliprole + lambda-cialotrina e deltametrina a P. sylveirae corresponde à menor espessura da cutícula.Portanto, os inseticidas novalurom, clorantraniliprole, spinosad e indoxacarb da selectividade fisiológica para P. sylveirae e B. lecheguana .

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“…In this context, Moreno et al 8 found that the commercial insecticide permethrin (pyrethroid) was 150 times more toxic to the predator S. saevissima and 2380 times more toxic to T. angustula in comparison to A. monuste. Additionally, Araújo et al 33 found that the commercial insecticides cartap (nereistoxin analogue), chlorfenapyr (pyrazole analogue), deltamethrin (pyrethroid), Before release, new insecticides must undergo a rigorous registration process that includes testing of acute and chronic toxicity to assess the risk to nontarget organisms, including natural enemies and honey bees. 34 In this study, we demonstrated the low toxicity of two amides in two species of nontarget organisms; however, more studies will be conducted aiming to evaluate chronic effects of these compounds.…”

Section: Selectivity Of Amides 3 and 4 To The Predator S Saevissima mentioning

confidence: 99%

Insecticidal Activity of Dienamides on Cabbage Caterpillar and Beneficial Insects

Lopes¹,

Alvarenga²,

Aguiar³

et al. 2018

Quim. Nova

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Recebido em 15/08/2017; aceito em 21/12/2017; publicado na web em 01/02/2018The demand for new insecticides is increasing due to the appearance of insect populations that are resistant to currently used products. New insecticides should be efficient in controlling pests and present low toxicity to non-target organisms. Ascia monuste (Lepidoptera: Pieridae) is a destructive pest of cole vegetables, and the fire ant Solenopsis saevissima (Hymenoptera: Formicidae) is an important predator of these caterpillars in brassica crops. Tetragonisca angustula (Hymenoptera: Apidae) is very important in pollinating many plants and providing honey. Therefore, this study evaluated the toxicity of synthetic amides to A. monuste and its selectivity in favor of S. saevissima and T. angustula. The amides (2E,4E)-N-propylhexa-2,4-dienamide (3) and (2E,4E)-N-butylhexa-2,4-dienamide (4) caused high (96 and 93%, respectively) and fast (48 h) mortality of A. monuste. The amides 3 and 4 were not harmful to the predator (mortality of 5.7% for amide 3 and 7.14% for amide 4) and were slightly harmful to the pollinator (mortality of 38.57% for amide 3 and 28.12% for amide 4). The amides 3 and 4 are promising, as insecticides, due to the high and rapid mortality of A. monuste with low and moderate toxicity to S. saevissima and T. angustula, respectively.

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Toxicity and residual effects of insecticides on Ascia monuste and predator Solenopsis saevissima

Cited by 21 publications

References 37 publications

Toxicity and Sublethal Effects of Phthalides Analogs to Rhyzopertha dominica

Toxicity and Sublethal Effects of Phthalides Analogs to Rhyzopertha dominica

Physiological selectivity of insecticides from different chemical groups and cuticle thickness of Protonectarina sylveirae (Saussure) and Brachygastra lecheguana (Latreille)

Insecticidal Activity of Dienamides on Cabbage Caterpillar and Beneficial Insects

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