Sublethal Effect of Six Insecticides on Predatory Activity and Survival of Coccinella Septempunctata (Coleoptera: Coccinellidae) Following Contact with Contaminated Prey and Residues

Afza, Rahat; Riaz, Muhammad; Afzal, Muhammad

doi:10.1007/s10343-019-00487-1

Cited by 7 publications

(7 citation statements)

References 20 publications

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“…59 Lambda-cyhalothrin and cypermethrin induced high toxicity in 4 th larval instars of C. septempunctata. 43,60 Moreover, another study observed that cypermethrin induced 100% mortality in 2 nd and 4 th larval instars of H. axydiris. 57 reported high larval mortality in E. connexa and C. externa treated with gamma-cyhalothrin.…”

Section: Discussionmentioning

confidence: 99%

“…Several authors have reported that all larval instars of Coccinella septempunctata L. (Coleoptera: Coccinellidae) exposed to pyrethroids (deltamethrin and bifenthrin) induced high mortality 59 . Lambda‐cyhalothrin and cypermethrin induced high toxicity in 4 th larval instars of C. septempunctata 43,60 . Moreover, another study observed that cypermethrin induced 100% mortality in 2 nd and 4 th larval instars of H. axydiris 57 .…”

Section: Discussionmentioning

confidence: 99%

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Toxicity assessment of two IGR insecticides on eggs and larvae of the ladybird Eriopis connexa

Noelia

Scorsetti²,

Minardi

et al. 2022

Pest Management Science

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BACKGROUND: Eriopis connexa is an important predator in the Neotropical region, associated with pests of economic relevance on horticultural crops in Argentina. The use of broad-spectrum insecticides could reduce the biodiversity of these natural enemies in agroecosystems and put at risk its conservation. New, selective "risk reduced" insecticides could be an alternative to conventional chemical control to promote sustainable agriculture. The goal of this work was to assess the lethal and sublethal effects of two insect growth regulator (IGR) insecticides on eggs and two larval instars of E. connexa exposed to insecticides. RESULTS: Pyriproxyfen and cypermethrin significantly affected egg hatching by 28.8% and 70.4%, respectively. Pyriproxyfen reduced the survival of larvae that emerged by ≈52% from Day (D3)3 after hatching and caused the lengthening of developmental time for both larval and pupal stages. By contrast, teflubenzuron did not reduce hatching and survival but shortened the developmental time of the pupae stage. Cypermethrin reduced the survival of 2 nd (L 2 ) and 4 th (L 4 ) larval instars by 36.4% and 74.6%, respectively, and lengthened the development time of L 2 . Pyriproxyfen lengthened the development time of L 4 and reduced the fecundity and fertility of females. Teflubenzuron reduced survival of L 2 and L 4 larval instars by 46.9% and 28.6%, respectively, and lengthened the total development time for the larval stage. In addition, teflubenzuron reduced the fecundity and fertility of females. CONCLUSIONS: Both eggs and larvae were susceptible to exposure to IGR, showing lethal and sublethal effects. This study highlights, once again, the higher toxicity of cypermethrin to E. connexa. The toxicity of both IGR insecticides could impair the performance of E. connexa as a biological control agent in agroecosystems.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Toxicity assessment of two IGR insecticides on eggs and larvae of the ladybird Eriopis connexa

Noelia

Scorsetti²,

Minardi

et al. 2022

Pest Management Science

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“…[12][13][14][15] Previous studies have determined the toxicity of some commonly used pesticides to ladybird beetles. [16][17][18][19][20] Moreover, several studies have observed the acute toxic effects of ladybirds exposed to pesticides for 48 or 72 h. 17,19 As it takes about 17-19 days for the second-instar larvae of ladybirds to develop into adults, it is important to evaluate the mortality before they develop into adults to comprehensively understand the toxic effects of pesticides on ladybird beetles. However, the mortality of ladybird beetles does not stabilize after short-term exposure to some pesticides, and the survival rate changes before the pre-imaginal stage.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have determined the toxicity of some commonly used pesticides to ladybird beetles 16–20 …”

Section: Introductionmentioning

confidence: 99%

Toxicity and risk assessment of nine pesticides on nontarget natural predator Harmonia axyridis (Coleoptera: Coccinellidae)

Cheng

Xue³

et al. 2022

Pest Management Science

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BACKGROUND: Harmonia axyridis (Coleoptera: Coccinellidae) is a beneficial predatory arthropod in the agricultural ecosystem. For the success and development of integrated pest management strategies, it is essential to assess the toxicity risks of commonly used pesticides to nontarget arthropods. RESULTS:The glass tube residue method was used to determine the risk of nine pesticides to H. axyridis after second-instar exposure. To assess the potential risk of the selected pesticides, the pre-adult LR 50 values were calculated by the hazard quotient (HQ) method. The LR 50 (application rate causing 50% mortality) values of imidacloprid, dinotefuran, thiamethoxam, acetamiprid, bifenthrin, and dimethoate were 0.44, 0.82, 0.10, 0.05, 0.04, and 0.21 g a.i. ha −1 , respectively, showing unacceptable risk to H. axyridis after exposure to in and off field. However, emamectin benzoate and two fungicides, tebuconazole and myclobutanil, posed a low risk to H. axyridis and their HQ values were less than the trigger value of 5. CONCLUSIONS:The four neonicotinoid insecticides (imidacloprid, dinotefuran, thiamethoxam, and acetamiprid), pyrethroid bifenthrin, and organophosphorus dimethoate showed a high risk to H. axyridis. Emamectin benzoate, tebuconazole, and myclobutanil showed a low risk to H. axyridis under both exposure scenarios. The results provide critical scientific evidence to guide future regulation of pesticide management practices and protection of nontarget arthropods like H. axyridis.

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“…Òàêîae íèçüêà òîêñè÷í³ñòü õëîðàíòðàí³ë³ïðîëó âñòàíîâëåíà äëÿ êîêöèíåë³ä -ñî-íå÷êà êîíâåðãåíòíîãî Hippodamia convergens Guérin-Méneville, 1842 [3], ñîíå÷êà ñåìèêðàïêîâîãî, Coccinella septempunctata L. [4,5], ãàðìîí³¿ ì³íëèâî¿ Harmonia axyridis Pallas, 1773 [6]. Íà â³äì³íó â³ä Êîðàãåíó 20, ÊÑ, îáïðèñêóâàííÿ ³íñåêòèöèäàìè íà îñíîâ³ ôëóáåíä³àì³äó òà ëÿìáäà-öèãàëîòðèíó ñïðèÿº íàéâèù³é ñìåðòíîñ-ò³ êîêöèíåë³ä [7][8][9].…”

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confidence: 99%

Influence of Insecticides on Useful Entomofauna in Corn Crops

Medvid¹

2020

qpp

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Goal. of research is to specify species composition of coccinellids of corn agrocenosis, to define insecticides influence on useful entomofauna, to estimate the profitability level of used preparation. Methods. Are the following: field accounting of insects in corn crops in accordance with the generally accepted methodology; experiment on the influence of insecticides on useful entomofauna in corn. Laboratory method that means identification of species composition of ladybirds. Results. Specified species composition of coccinellids in present conditions on corn crops. Educed six species of ladybirds, among them Coccinella septempunctata Linnaeus, 1758 was marked as dominant species, while Propylea quatuordecimpunctata Linnaeus, 1758 as subdominant species. Presented mean quantity of coccinellids, green lacewings, syrphids on the 3rd, 7th, 14th and 21st days after spraying of insecticides on corn. Specified correlation of coccinellids species before and after insecticide application. Presented correlation of entomophages (ladybirds, green lacewings, syrphids) on corn crops. Determined technical and economic efficiency after spraying of corn with insecticides Ampligo 150 ZC (Chlorantraniliprole, 100g/l+Lambda-Cyhalothrin, 50g/l), Belt 480 SC (Flubendiamide, 480 g/l), Coragen 20 SC (Chlorantraniliprole, 200 g/l). Conclusions. After insecticides application the highest mean quantity of coccinellids was observed in case of Coragen 20 SC — 2,4 exemplars/m2, after Ampligo 150 ZC it was 0,4 exemplars/m2, after Belt 480 SC — 0,7 exemplars/m2. The mean quantity of green lacewings and syrphids was low for all variants. The least toxic effect on quantity of entomophages had an insecticide Coragen 20 SC. The percentage of dead insects after its usage was the following: for imago of coccinellids — 43.4%, larvae — 79.5%, pupas — 54.2%; green lacewings — 68.2%, syrphids — 75.0%. Spraying of preparation Coragen 20 SC provided the level of profitability 440.16%, whereas profitability after Ampligo 150 ZC was 289.33%, after Belt 480 SC — 126.81%.

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Sublethal Effect of Six Insecticides on Predatory Activity and Survival of Coccinella Septempunctata (Coleoptera: Coccinellidae) Following Contact with Contaminated Prey and Residues

Cited by 7 publications

References 20 publications

Toxicity assessment of two IGR insecticides on eggs and larvae of the ladybird Eriopis connexa

Toxicity assessment of two IGR insecticides on eggs and larvae of the ladybird Eriopis connexa

Toxicity and risk assessment of nine pesticides on nontarget natural predator Harmonia axyridis (Coleoptera: Coccinellidae)

Influence of Insecticides on Useful Entomofauna in Corn Crops

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