Effects of Systemic Imidacloprid on<i>Coleomegilla maculata</i>(Coleoptera: Coccinellidae)

Smith, Stephen F.; Krischik, Vera A.

doi:10.1093/ee/28.6.1189

Cited by 98 publications

(61 citation statements)

References 16 publications

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“…Slight to moderate toxicity of thiamethoxam to parasitized whitefly pupae and cotton aphid mummies was reported by Ogata (1999) and Torres et al (2003a), respectively. The placement selectivity of systemic insecticides through soil treatment, however, can be diminished when natural enemies supplement their diet by feeding on plant (e.g., pollen, nectar, sap) (Sclar et al 1998, Smith & Krischik 1999, Torres et al 2003b. Smith & Krischik (1999) reported reduced survival and mobility and delay on preoviposition period of Coleomegilla maculata (DeGeer), a facultative pollen feeder, confined with inflorescences from imidacloprid-treated plants 25 days postaplication.…”

Section: Discussionmentioning

confidence: 99%

“…The placement selectivity of systemic insecticides through soil treatment, however, can be diminished when natural enemies supplement their diet by feeding on plant (e.g., pollen, nectar, sap) (Sclar et al 1998, Smith & Krischik 1999, Torres et al 2003b. Smith & Krischik (1999) reported reduced survival and mobility and delay on preoviposition period of Coleomegilla maculata (DeGeer), a facultative pollen feeder, confined with inflorescences from imidacloprid-treated plants 25 days postaplication. Also, Sclar et al (1998) showed that the predator Orius tristicolor (White) suffered higher mortality when confined on imidacloprid-treated corn seedlings than when confined on untreated plants.…”

Section: Discussionmentioning

confidence: 99%

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Toxicity of thiamethoxam and imidacloprid to Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) nymphs associated to aphid and whitefly control in cotton

Torres¹,

Ruberson²

2004

Neotrop. Entomol.

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A sobrevivência de ninfas de P. nigrispinus confinadas em plantas de algodoeiro em potes e tratadas com os inseticidas em concentrações acima de 1 mg (i.a.) por planta foi afetada até 52 dias após tratamento, porém no campo a sobrevivência de ninfas foi afetada somente até nove dias após tratamento com os inseticidas. Todas as concentrações dos inseticidas foram eficientes no controle de mosca-branca até 40 dias após tratamento de plantas em potes. A população da moca-branca apresentou baixa densidade no campo, sem diferenças entre tratamentos inicialmente, porém com maior população de mosca-branca em plantas não tratadas e tratadas com 0,5 mg (i.a.) do tiametoxam aos 64 dias de idade das plantas. Parcelas tratadas com concentrações de inseticidas inferiores a 1 mg (i.a.) por planta apresentaram infestação do pulgão abaixo de 10% até aos 61 dias de idade. Nessa idade das plantas, parcelas não tratadas ou tratadas com 0,5 mg do tiametoxam apresentaram infestações de 68,7 e 31,2%, respectivamente. A utilização de até 1 mg (i.a.) de tiametoxam e imidaclopride por planta objetivando o controle da moscabranca e do pulgão do algodoeiro, vinculada à preservação de P. nigrispinus, apresenta maiores chances de sucesso devido ao menor efeito residual. PALAVRAS-CHAVE: Bemisia tabaci, Aphis gossypii, fitofagia, percevejo predadorABSTRACT -The toxicity of thiamethoxam and imidacloprid to Podisus nigrispinus (Dallas) nymphs, and their efficacy against whitefly and cotton aphid were studied. Thiamethoxam and imidacloprid were 217.6 and 223.4 and 1435.2 and 346.8 times more toxic (LC 90 ) by ingestion than by residual contact to 2nd-and 5th-instar nymphs of this predator, respectively. Nymphs caged on potted cotton plants and treated with either insecticide at 1 mg (a.i.) per plant or more had lower survival than those on untreated plants, up to day 52 after treatment. Thiamethoxam and imidacloprid reduced field survival of P. nigrispinus compared to untreated plants up to nine days after treatment. Thiamethoxam and imidacloprid showed significant control of whitefly in comparison with untreated plants up to 40 days after treatment in potted plants. Whitefly population had low density over time in the field with no differences between treatments and only at day 64 higher whitefly population was observed on untreated plants and plants treated with 0.5 mg (a.i.) of thiamethoxam per plant. Plots treated with thiamethoxam and imidacloprid at doses over 1 mg (a.i.) per plant retained aphid infestation lower than 10% up to 61 days of plant age. Untreated and treated plants with 0.5 mg of thiamethoxam showed infestation of 68.7 and 31.2%, respectively, at this time. Thiamethoxam and imidacloprid used in cotton for whitefly and aphid control aiming P. nigrispinus preservation can be more successful when they are used at doses bellow 1 mg (a.i.) per plant due to shorter residual effect.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Toxicity of thiamethoxam and imidacloprid to Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) nymphs associated to aphid and whitefly control in cotton

Torres¹,

Ruberson²

2004

Neotrop. Entomol.

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“…Methomyl is known for having side effects on several (Mohamed 2009). Imidacloprid is known for its side effects on natural enemies such as coccinellids (Smith & Krischik 1999), Hymenoptera: Apidae, in the laboratory (Schmuck et al 2001); Coccinellidae on peach groves (Karagounis et al 2006;Kourdoumbalos et al 2006); the Neuroptera Hemerobiidae on lettuce (Cole and Horne 2006); and predatory beetles on okra (Solangi & Lohar 2007); and some pollinator insects of wild flowers (Mommaerts et al 2010). In a field trial, insecticidal soap and kaolin foliar spray reduced aphid density for one week.…”

Section: Discussionmentioning

confidence: 99%

Impact of some alternative methods to chemical control in controlling aphids (Hemiptera: Sternorrhyncha) and their side effects on natural enemies on young Moroccan citrus groves

Smaili

Ghadraoui

Gaboun³

et al. 2014

Phytoparasitica

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Aphid control in Moroccan citrus orchards is based mainly on carbamate and neonicotinoid sprays, especially methomyl and imidacloprid. The extensive use of these insecticides may have side effects on natural enemies and environment quality and raises human health concerns. This research aimed to assess the control of aphids with insecticidal soap, kaolin and augmentative biological control using the indigenous predator Adalia decempunctata L. (Coleoptera: Coccinellidae). The insecticides were applied and the predators were released in April 2009 and 2010. Under field experimentation, the methomyl and imidacloprid foliar pulverization were very effective against aphids. In contrast, the insecticidal soap and kaolin application were less efficient while A. decempunctata adults were effective only in the first week after release. The side effects on beneficial insects were also assessed and discussed. The possibility of employing A. decempunctata in an integrated pest management package in citrus groves is discussed in relation to effectiveness and side effects on beneficial arthropods.

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“…As such, indirect effects associated with systemic insecticides may reduce the overall success of parasitoids in regulating arthropod pest populations under field conditions [11]. Translocation of systemic insecticides into flowers may indirectly affect natural enemies by altering foraging behavior as has been shown with the pink lady beetle, Colemegilla maculata, the green lacewing, Chrysoperla carnea, and the parasitoid, A. pseudococci [53,[63][64]. Nevertheless, the ability of systemic insecticides, when applied to the soil or growing medium as a drench or granule, to move into floral parts may be contingent on water solubility, application rate, and plant type [9,65].…”

Section: Systemic Insecticidesmentioning

confidence: 99%

Indirect Effects of Pesticides on Natural Enemies

Cloyd¹

2012

Pesticides - Advances in Chemical and Botanical Pesticides

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Effects of Systemic Imidacloprid onColeomegilla maculata(Coleoptera: Coccinellidae)

Cited by 98 publications

References 16 publications

Toxicity of thiamethoxam and imidacloprid to Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) nymphs associated to aphid and whitefly control in cotton

Toxicity of thiamethoxam and imidacloprid to Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) nymphs associated to aphid and whitefly control in cotton

Impact of some alternative methods to chemical control in controlling aphids (Hemiptera: Sternorrhyncha) and their side effects on natural enemies on young Moroccan citrus groves

Indirect Effects of Pesticides on Natural Enemies

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