Does the dose make the poison? Neurotoxic insecticides impair predator orientation and reproduction even at low concentrations

Pest Management Science, Journal Year: 2022, Volume and Issue: 78(4), P. 1698 - 1706

Published: Jan. 7, 2022

Pesticides can be noxious to non-target beneficial arthropods and their negative effects have been recently recognized even at low doses. The predator Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae) plays an important role in controlling insect pests solanaceous crops, but its concurrent herbivory often poses relevant concerns for tomato production. Although insecticide side on N. previously studied, little is known the potential implications of neurotoxic chemicals concentrations. We assessed baseline toxicity three insecticides (lambda-cyhalothrin, spinosad chlorpyrifos) by topical contact exposure. behavioral reproduction capacity was then investigated upon exposure estimated low-lethal concentrations (LC

Language: Английский

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Companion plants and alternative prey improve biological control by Orius laevigatus on strawberry

Journal of Pest Science, Journal Year: 2022, Volume and Issue: 96(2), P. 711 - 721

Published: Nov. 7, 2022

Language: Английский

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A parasitoid wasp allied with an entomopathogenic virus to control Tuta absoluta

Crop Protection, Journal Year: 2024, Volume and Issue: 179, P. 106617 - 106617

Published: Feb. 9, 2024

Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is a major threat to worldwide tomato production, and sustainable management methods are needed. Betabaculovirus phoperculellae (PhopGV) the parasitoid wasp Necremnus tutae Ribes & Bernardo (Hymenoptera: Eulophidae) were identified as promising biocontrol agents of this pest. Since virus most effective against first instar larvae, whereas targets older ones, combining both could result in increased pest control. We conducted replicated semi-field experiment evaluate control efficacy N. PhopGV when used alone combination T. their compatibility over an entire growth period. Combining two achieved highest larval (−24 %) crop damage (−29 reduction cumulated experiment. However, there was no significant additive effect agents. At end trial, which coincided with emergence third generation adults, using resulted strongest adult density (−78 %), followed by virus-parasitoid (−59 %). No negative recorded on population. Our results demonstrate potential reduce population under conditions. While more research needed, our findings provide important insights into innovative agents, thereby contributing agriculture.

Language: Английский

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Natural enemies associated with Tuta absoluta and functional biodiversity in vegetable crops

BioControl, Journal Year: 2021, Volume and Issue: 66(5), P. 613 - 623

Published: June 18, 2021

Language: Английский

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Chemical cues from honeydew-associated bacteria to enhance parasitism efficacy: from laboratory to field assay

Journal of Pest Science, Journal Year: 2023, Volume and Issue: 97(2), P. 873 - 884

Published: Aug. 29, 2023

Language: Английский

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Lobularia maritima as a nutrient-rich floral food source for two parasitoid wasps of Tuta absoluta

Entomologia Generalis, Journal Year: 2024, Volume and Issue: 44(2), P. 339 - 346

Published: March 21, 2024

Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the main pests threatening tomato production worldwide.Since its detection in Mediterranean basin, it has been target research aiming to reduce damage crops.Current conservation biological control approaches focus on polyphagous predators Macrolophus pygmaeus (Rambur) and Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae), which are very effective pest's eggs but have little effect T. larvae.Surveys conducted northeast Spain concluded that eulophid Necremnus tutae Ribes & Bernardo braconid Dolichogenidea gelechiidivoris (Marsh) most abundant larval parasitoids.It well known adding floral resources near crops can provide high-quality food for natural enemies thus enhance control.Previous studies showed Lobularia maritima L. (Brassicaceae) flowers a reliable source N. tutae.The present study examines whether availability positively influences fitness D. by parasitoids.To this aspect, performance both wasps was evaluated simple complex arena at high low densities absoluta, respectively.Our results demonstrate nectar nutrient-rich with profound implications tomatoes.

Language: Английский

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First Report Using a Native Lacewing Species to Control Tuta absoluta: From Laboratory Trials to Field Assessment

Insects, Journal Year: 2020, Volume and Issue: 11(5), P. 286 - 286

Published: May 7, 2020

The South American tomato pinworm, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), a destructive pest on tomato, has invaded most Afro-Eurasian countries. Recently by the pest, crops in greenhouses and open fields Tajikistan are currently suffering major damage. While failure management using chemical insecticide been frequently observed, alternative options such as biological control is urgently needed. In this study, we evaluated effectiveness of common green lacewing Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) against T. absoluta. controlled laboratory conditions, C. showed high predation rate both eggs (i.e., 36 ± 2 within 24 h 72 4 48 h) larvae, especially it can attack larvae inside outside leaf galleries an average 22% was killed inside, 35% outside). cage exclusion experiment, relatively low larval density cages with pre-fruiting release carnea, whereas four to six times higher "no release" cages. "post-fruiting cages, population that had already built up during stage eventually crashed. open-field plots were fully destroyed, levels damage observed biocontrol plots. Moreover, field resulted significantly yield than those without release, despite no differences between "pre-fruiting treatments. We conclude local commercial agent could be promising for Tajikistan. It also one first reports showing species. should validated further trials larger area various locations.

Language: Английский

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Water and salt stresses do not trigger bottom-up effects on plant-mediated indirect interactions between a leaf chewer and a sap-feeder

Journal of Pest Science, Journal Year: 2020, Volume and Issue: 93(4), P. 1267 - 1280

Published: July 6, 2020

Language: Английский

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Feeding guild determines strength of top-down forces in multitrophic system experiencing bottom-up constraints

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 793, P. 148544 - 148544

Published: June 19, 2021

Language: Английский

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Models for the practitioner: Predicting the efficient biocontrol of Tuta absoluta under different management scenarios

Crop Protection, Journal Year: 2023, Volume and Issue: 172, P. 106316 - 106316

Published: June 12, 2023

Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most destructive pests solanaceous crops. One possible biological control strategy augmentative release parasitoids. However, parasitoid intervention efficacy highly sensitive to timing and intensity. Virus-based biopesticides are additional means since they selective can be combined with natural enemies. We developed a stage-structured population model, validated results from semi-field experiment, investigate predict dynamics pest T. its parasitoids, Necremnus tutae Ribes & Bernardo (Hymenoptera: Eulophidae). The aim study was assess best parameters N. in four different management scenarios: without any other method, biopesticide (PhopGV, Baculoviridae), presence parasitoid, when combining biopesticide. Moreover, each scenario, two growing seasons lengths were compared. To achieve same level, 3–45% fewer parasitoids necessary long season than shorter one. Biopesticide applications reduce number required by 66% 78%, whereas reduces it 11% 17% for short seasons, respectively. On average, application, delayed month remains efficient. These findings highlight importance mathematical models applied drawing precise predictions crucial efficient control.

Language: Английский

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