Effects of selected botanical insecticides on the behaviour and mortality of the glasshouse whitefly <i>Trialeurodes vaporariorum</i> and the parasitoid <i>Encarsia formosa</i>

Simmonds, Monique S. J.; Manlove, John; Blaney, W. M.; Khambay, B. P. S.

doi:10.1046/j.1570-7458.2002.00923.x

Cited by 52 publications

(43 citation statements)

References 12 publications

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“…Furthermore, ethanol extract of neem seed at 0.1 mg mL -1 caused 49% mortality in adults of T. vaporariorum, ethanolic extract has been reported as effective in other pests (Simmonds et al, 2002;Coria et al, 2008 Cubillo et al, 1999).…”

Section: Mortality Assessment and Oviposition Inhibitionmentioning

confidence: 99%

“…Por otro lado, el extracto etanólico de semilla de nim a 0.1 mg mL -1 causó 49% de mortalidad en adultos de T. vaporariorum, el extracto etanólico ha sido reportado como eficiente en otras plagas (Simmonds et al, 2002;Coria et al 2008). La mortalidad obtenida es intermedia entre PHC Neeem y Neem Oil spray.…”

Section: Mortality Assessment and Oviposition Inhibitionunclassified

“…La mortalidad obtenida es intermedia entre PHC Neeem y Neem Oil spray. Azatin EC a 0.02 y 0.1 mg mL -1 provocó 37.8 y 65% de mortalidad en adultos de B. tabaci y T. vaporariorum respectivamente, (Abou-Fakhr Hammad et al, 2000;Simmonds et al, 2002), resultando con actividad similar a Neem Oil spray, a diferencia de los formulados Margosan-O, Nim 80 y Nim Oil que fueron más efectivos (Castillo-Sánchez et al, 2010) que los productos evaluados en el presente trabajo; Margosan-O a 0.01 mg mL -1 ocasionó 15.5% de mortalidad en adultos de B. tabaci (AbouFakhr Hammad et al, 2000), y Nim 80 a 0.01 y Nim Oil a 0.03 mg mL -1 provocaron mortalidades de 62-65 y 33.8-80% en adultos de B. tabaci, respectivamente (Gómez et al, 1997;Cubillo et al, 1999).…”

Section: Mortality Assessment and Oviposition Inhibitionunclassified

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Actividad biológica de nim en adultos de mosca blanca Trialeurodes vaporariorum (Aleyrodidae) West

Muñiz-Reyes

Barreto²,

Rodríguez-Hernández

et al. 2017

Remexca

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Los insecticidas químicos para controlar Trialeurodes vaporariorum West. han sido prácticamente la única herramienta utilizada, sin embargo la problemática global de contaminación ambiental y presión selectiva a insecticidas, ha fomentado un cambio en la forma de manejar las plagas más ecológicas y eficaces. El nim o neem Azadirachta indica es una opción como insecticidas botánicos, sus metabolitos ya se han comercializado en diferentes formulaciones, sin embargo es necesario evaluar su acción insecticida e insectistática. El objetivo de esta investigación fue comparar el efecto en la mortalidad, repelencia y oviposición de productos formulados de A. indica. En este estudio se probaron cuatro formulaciones a base de aceite de nim en adultos de T. vaporariorum. Los productos que mostraron la mortalidad más alta fueron Neem Oil Spray y PHC Neeem, a una concentración de 0.6 mg mL-1. El mejor efecto repelente fue de Neem Oil Spray (82.6%), PHC Neeem (72.3%), Biosave Neem (70.8%), y Neemix 4.5 (59.9%); los dos primeros muestran mayor persistencia con efecto similar a los 3 días de evaluación. El mejor inhibidor de la oviposición fue Neem Oil Spray (99.6% utilizando 1 mg mL-1), Biosave Neem (92.8%), PHC Neeem (82.6%), y Neemix 4.5 (57%). En contraste, Biosave Neem y Neemix 4.5 estimularon la oviposición en concentraciones de 0.01-0.3 mg mL-1 y PHC Neeem a 0.035 mg mL-1. La concentración de aceite en la formulación es determinante en el efecto, pues a mayor proporción, la formulación se hace más persistente, lo contrario la hace más polar y aumenta su capacidad sistémica.

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Section: Mortality Assessment and Oviposition Inhibitionmentioning

confidence: 99%

Section: Mortality Assessment and Oviposition Inhibitionunclassified

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Actividad biológica de nim en adultos de mosca blanca Trialeurodes vaporariorum (Aleyrodidae) West

Muñiz-Reyes

Barreto²,

Rodríguez-Hernández

et al. 2017

Remexca

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“…Al respecto Mahdi y Rahman (2008) reportan que el extracto de esta especie redujo la emergencia de adultos de Callosobruchus maculatus. Estos resultados coinciden con otros estudios donde se demuestra el bajo o nulo efecto tópico que tienen los insecticidas botánicos sobre el hospedero parasitado; en general la azadiractina ha mostrado ser de impacto bajo en la emergencia de adultos de Lysiphlebus testaceipes (Tang et al 2002), Encarsia formosa (Simmonds et al 2002), E. so a (Aggarwal y Brar 2006) y T. trioze (Luna-Cruz et al 2011). Estos resultados contrastan con lo reportado para el Biodie, donde se reporta la supervivencia de las pupas hasta la emergencia de adultos del endoparasitoide (McDougall 1986).…”

Section: Resultados Y Discusiónunclassified

Efectos de insecticidas botánicos comerciales en Tamarixia radiata, un ectoparasitoide de Diaphorina citri

Monsreal-Ceballos¹,

Ruíz-Sánchez²,

Sánchez-Borja³

et al. 2017

Ecosist. Recur. Agropec.

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ABSTRACT. The e ect of three commercial botanical insecticides on the mortality by residues and ingestion of Tamarixia radiata was evaluated. Biodie and NeemPHC had 12.7 and 12.3 % residue mortality e ect and 33.3 and 28.7 % mortality by ingestion, respectively. Mortality also increased signi cantly as time went by, although only with regard to ingestion, and up to 48 and 72 h, for both Biodie and NeemPHC. CinnAcar did not have a major toxic e ect when ingested and none of the botanical insecticides had signi cant e ects on the appearance of adults. The three products under evaluation do not interfere with biological control.

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“…(Meliaceae) oil extract is one of the most common repellent essential oils. It has been used previously against whitefly and showed promising results (Simmonds et al 2002;de Almeida Marques et al 2014). Pavela and Herda (2007) have shown repellent effects against B. tabaci B biotype (Yang et al 2010).…”

Section: Introductionmentioning

confidence: 99%

A critical evaluation of the effects of plant essential oil formulations against silverleaf whitefly, Bemisia tabaci, B biotype (Gennadius) and its natural enemies

Obaidoon¹

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The toxicity of 30 botanical products and mixtures were evaluated using preliminary bioassay tests to find out their overall effectiveness against the developmental stages of silverleaf whitefly (SLW) Bemisia tabaci, B biotype, (Gennadius) (Hemiptera: Aleyrodidae). Effective formulations were prepared to be tested in replicated experiments against the egg, nymphal and adult stages of SLW.From the results, mustard oil showed an ovicidal effect, lauryl glucoside, a surfactant, had produced high mortalities against the nymphal stages whereas monoethanolamine, diethylene glycol monomethyl ether (cellosolve acetate) and laureth -7ethylene oxide-carboxylate (laureth carboxylate) had produced high to moderate level of adulticidal effects. Three formulations were prepared from those effective products and then used in replicated experiments testing their lethal (toxicity) and sublethal (repellency and oviposition deterrent) effects against SLW. Additionally, trials were conducted to investigate their impacts on one of the main SLW parasitoids, Eretmocerus hayati (Zolnerowich and Rose) (Hymenoptera: Aphelinidae).Leaf dipping and spraying methods were used to assess the toxicity effects of the products, and choice and no choice repellence tests were used to determine the repellence index (RI) and oviposition deterrent index (ODI). A glass -slide bioassay was used to determine the lethal effects of the formulations against the SLW parasitoid. Different ranges of the tested rates of the formulations were prepared starting from 0.001% v/v to 10% v/v to investigate the proper effective rates that provide sufficient mortality rates of the developmental stages of SLW.After promising results of the mixture containing mustard oil and liquid soap, replicated experiments were conducted against each developmental stage of SLW. When tested on eggs, at a concentration of 0.25%, mortality was 95.8%, whereas the mortality percentages were 43% and 50% at tested rates of the mixture at 0.1% and 0.05%, respectively. Mustard oil evaluated against nymphal stages was effective at a rate of 0.25% and above against young and old nymphs (86.4% and 47.4% mortality, respectively). Tests against the adult stage at 0.25% and 0.5% resulted in low mortality; 34.0% and 37.0%, respectively. However, at 1% and above mortality was high (94.17% at 1%).On the basis of these results, three formulations were prepared: formulation one (F1) containing mustard oil, MW-100 emulsifier, lauryl glucoside and cellosolve acetate, formulation three (F3) containing mustard oil, MW-100 emulsifier, laureth carboxylate and monoethanolamine and formulation four (F4) containing mustard oil, MW-100 emulsifier, lauryl glucoside and monoethanolamine. These formulations were evaluated at different concentrations (0.25%, 0.44%.ii 0.69%, 1% and 1.23%). The formulations had an effective impact on the eggs of SLW, disrupting the embryogenesis process of the eggs. These formulations also affected all nymphal instars.However, the tested rates did not show sufficient effects...

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Effects of selected botanical insecticides on the behaviour and mortality of the glasshouse whitefly Trialeurodes vaporariorum and the parasitoid Encarsia formosa

Cited by 52 publications

References 12 publications

Actividad biológica de nim en adultos de mosca blanca Trialeurodes vaporariorum (Aleyrodidae) West

Actividad biológica de nim en adultos de mosca blanca Trialeurodes vaporariorum (Aleyrodidae) West

Efectos de insecticidas botánicos comerciales en Tamarixia radiata, un ectoparasitoide de Diaphorina citri

A critical evaluation of the effects of plant essential oil formulations against silverleaf whitefly, Bemisia tabaci, B biotype (Gennadius) and its natural enemies

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