Evaluation of an endosulfan tolerant strain of Trichogramma chilonis on cotton

Ballal, Chandish R.; Srinivasan, R.; Jalali, S. K.

doi:10.1007/s10526-009-9222-0

Cited by 18 publications

(7 citation statements)

References 20 publications

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“…Because of the negative consequences associated with pesticides, chemical control and biological control with Trichogramma have long been considered incompatible. Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae) has been reared and released for controlling several lepidopteran insect pests on corn (Zea mays L.), cotton (Gossypium hirsutum L.), and vegetables (Chang et al 2001, Ballal et al 2009, Preetha et al 2009). Many studies showed that T. chilonis has great parasitization potential on egg of diamondback moth, Plutella xylostella (Hü bner) (Wü hrer and Hassan 1993, Kazuki and Masahiro 1998, He et al 2001); thus, this parasitoid is considered as a suitable candidate to control the diamondback moth.…”

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confidence: 99%

Acute Toxicities and Sublethal Effects of Some Conventional Insecticides on <I>Trichogramma chilonis</I> (Hymenoptera: Trichogrammatidae)

Wang¹,

He²,

XiangLing³

et al. 2012

jnl. econ. entom.

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The acute toxicity of 10 conventional insecticides to adult of Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae) was bioassayed by membrane method, and then their sublethal effects on the parasitoid were evaluated in the laboratory. Based on sublethal concentration (LC30) values at 8 h after treatment, we determined that adult T. chilonis were the most susceptible to chlorfenapyr, followed by fipronil, spinosad, avermectins, beta-cypermethrin, and cartap, with lethal concentration (LC)30 values of 0.3133, 0.3269, 1.5408, 3.2961, 6.1469, and 9.021 mg/liter, respectively. The field-recommended concentrations of chlorfluazuron, indoxacarb, Bacillus thuringiensis, and tebufenozide caused <30% mortality of treated adults; therefore, they were used to evaluate sublethal effects on the parasitoid. After treatment with sublethal concentration of fipronil and avermectins, the longevity of treated females (1.2 and 1.6 d) was significantly shortened and fecundity (34.7 and 1.6) was remarkably decreased; consequently, the life-table parameters (R0, r(m), lambda, and T) of T. chilonis were statistically lower than those in the control. Cartap and spinosad also reduced longevity (8 and 7.9 d) and fecundity (110.77 and 117.2) of treated adults, but cartap enhanced the female percentage of F1 offspring (61.6%), resulting a statistical higher R0, r(m), and lambda of treated T. chilonis. In contrast, chlorfluazuron and tebufenozide increased longevity (16.4 and 15.4 d) and fecundity (248 and 256.9) of treated adults but slightly decreased the female percentage of F1 offspring (31.4 and 38.1%). Although chlorfenapyr showed no adverse influence on longevity and fecundity, it remarkably reduced the female percentage of F1 offspring (13.5%), leading to a lower R0, r(m), and lambda of treated T. chilonis. Indoxacarb, B. thuringiensis, and beta-cypermethrin had no obvious sublethal effects on the longevity and fecundity of treated adults. Based on these results, we consider B. thuringienesis, chlorfluazuron, indoxacarb, beta-cypermethrin, and tebufenozide safe to T. chilonis, suggesting that these insecticides are compatible with this parasitoid when being used in the field. However, fipronil, chlorfenapyr, spinosad, and avermectins were very harmful to T. chilonis. Timing of application of these insecticides was critical.

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mentioning

confidence: 99%

Acute Toxicities and Sublethal Effects of Some Conventional Insecticides on <I>Trichogramma chilonis</I> (Hymenoptera: Trichogrammatidae)

Wang¹,

He²,

XiangLing³

et al. 2012

jnl. econ. entom.

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“…established well (Croft & Hoying, 1975;Meyer, 1975;Hoy et al, 1980Hoy et al, , 1983Hoy et al, , 1985Hoy et al, , 1990Roush & Hoy, 1981b;Strickler & Croft, 1982;Hoy, 1982Hoy, , 1988bHoy, , 1990Field & Hoy, 1984;Hoy & Cave, 1991;Navajas et al, 2001). A few studies further demonstrated that pest control was improved when insecticides were applied , 1981bHoy, 1982;Hoy et al, 1983;Jalali et al, 2002Jalali et al, , 2006bBallal et al, 2009;Venkatesan et al, 2016).…”

Section: Performance Of Biocontrol Agents In Specific Environmentsmentioning

confidence: 94%

Does experimental evolution produce better biological control agents? A critical review of the evidence

Lirakis

Magalhães

2019

Entomologia Exp Applicata

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Biological control of crop pests is considered a good alternative or complement to the use of pesticides. However, legislation restricts the importation of natural enemies of pests. A potential way to circumvent this limitation is by using experimental evolution and/or artificial selection to improve native biological control agents. Here, we review studies that have used these methodologies and evaluate their success. Experimental evolution or artificial selection has been used on a wide range of traits, with most focusing on improving the performance of natural enemies in ecologically relevant environments, such as in the presence of pesticides or at different temperatures. Although most studies were poorly replicated, the selected traits generally improved following the selection process. However, correlated responses (often in the form of trade-offs) with other traits of interest were common. We suggest that the selection procedure can be improved by increasing replication and performing experimental evolution under more semi-natural environments, to ensure that the most useful traits are being selected.

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“…Os produtos fitossanitários recomendados pela CTMIP (Protas & Sanhueza 2004) foram selecionados através de referência científica por apresentarem menor impacto ambiental, entretanto poucos estudos sobre os efeitos destes produtos fitossanitários foram realizados para inimigos naturais coletados em macieira. De uma forma geral, há indícios que agrotóxicos prejudicam o parasitismo (Ballal et al 2009), entretanto, parasitóides sofrem pressão de seleção.…”

Section: Methodsunclassified

SELETIVIDADE DE INSETICIDAS A Trichogramma pretiosum (HYMENOPTERA: TRICHOGRAMMATIDAE) COLETADO EM OVOS DE LAGARTA-ENROLADEIRA Bonagota salubricola (Meyrick, 1937) (LEPIDOPTERA: TORTRICIDAE) EM FRAIBURGO, BRASIL

Araujo

Targão

Pastori

et al. 2013

RSA

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RESUMONeste trabalho foi avaliado o efeito de nove produtos fitossanitários utilizados no controle de pragas de macieiras em Fraiburgo (Brasil) sobre Trichogramma pretiosum Riley 1879 (Hymenoptera: Trichogrammatidae) coletado em ovos de Bonagota salubricola (Meyrick,1937) (Lepidoptera: Tortricidae). Para a realização dos bioensaios foram confeccionadas cartelas (2,5 x 0,5 cm) e colados 40 ± 2 ovos de Sitotroga cereallela (Oliv., 1819) (Lepidoptera: Gelechiidae), com idade inferior a 24 h e imersas nas caldas químicas durante cinco segundos. Os adultos do parasitóide foram expostos por 24 horas a resíduos secos de abamectin, clorpyrifos, carbaryl, fenitrothion, malathion, methidathion, phosmet, spirodiclofen e tebufenozide. O parasitismo, a emergência e a razão sexual foram avaliados. O delineamento experimental foi inteiramente casualizado com 10 tratamentos e 25 repetições. Clorpyrifos (150 mL/100L) foi classificado como nocivo, malathion (200 mL/100L) e carbaryl (360 mL/100L) se mostraram moderadamente nocivo, fenitrothion (150 mL/100L), phosmet (200 mL/100L), methidathion (100 mL/100L) e abamectin (100 mL/100L) foram levemente nocivo e tebufenozide (90 mL/100L) e spirodiclofen (25 mL/100L) foram inócuos. A razão sexual não foi afetada. Conclui-se que tebufenozide e spirodiclofen são os produtos fitossanitários que tiveram o menor impacto sobre o parasitismo de T. pretiosum e carbaril, methidation e abamectin tiveram o maior impacto sobre a emergência de T. pretiosum. Palavras chave: Lagarta-enroladeira-da-maçã; macieira; parasitóide de ovos; seletividade. ABSTRACTIn this work, was evaluated the effect of nine phytossanitary products used in the Apple Integrated Production, to Trichogramma pretiosum Riley 1879 (Hymenoptera: Trichogrammatidae) collected in Bonagota salubricola (Meyrick,1937) (Lepidoptera: Tortricidae). For the bioassay was confectioned paper cards of 2.5 x 0.5 cm, in which were glued 40 ± 2 eggs of Sitotroga cereallela (Oliv., 1819) (Lepidoptera, Gelechiidae) 24 hours old and immersing in the chemical solutions for five seconds. The adults of the parasitoid were exposed to dry residues of the abamectin, clorpyrifos, carbaryl, fenitrothion, malathion, methidathion, phomet, spirodiclofen e tebufenozide, allowing the parasitism for 24 hours. The parasitism rate, adult emergency and sexual ratio was evaluated. The experimental design was entirely randomized with ten treatments and 25 repetitions. Clorpyrifos (150 mL/100L) was harmful, malathion (200 mL/100L) and carbaryl (360 mL/100L) were moderately harmful. Fenitrothion (150 mL/100L), phosmet (200 mL/100L), methidathion (100 mL/100L) and abamectin (100 mL/100L) were slightly harmful and tebufenozide (90 mL/100L) and spirodiclofen (25 mL/100L) were harmless. The sex ratio was not affected. We conclude that tebufenozide and spirodiclofen are the pesticides that had the smallest impact on parasitism and carbaril, methidation and abamectin greater impact on the emergence of T. pretiosum.

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Evaluation of an endosulfan tolerant strain of Trichogramma chilonis on cotton

Cited by 18 publications

References 20 publications

Acute Toxicities and Sublethal Effects of Some Conventional Insecticides on <I>Trichogramma chilonis</I> (Hymenoptera: Trichogrammatidae)

Acute Toxicities and Sublethal Effects of Some Conventional Insecticides on <I>Trichogramma chilonis</I> (Hymenoptera: Trichogrammatidae)

Does experimental evolution produce better biological control agents? A critical review of the evidence

SELETIVIDADE DE INSETICIDAS A Trichogramma pretiosum (HYMENOPTERA: TRICHOGRAMMATIDAE) COLETADO EM OVOS DE LAGARTA-ENROLADEIRA Bonagota salubricola (Meyrick, 1937) (LEPIDOPTERA: TORTRICIDAE) EM FRAIBURGO, BRASIL

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