Toxicidade de Pesticidas Utilizados na Cultura do Pessegueiro para Estágios Imaturos de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae)

Giolo, Fabrizio Pinheiro; Grützmacher, Anderson Dionei; Manzoni, Cristiane Gindri; Härter, Wagner da Roza; Müller, Cristiane; Castilhos, Rodolfo Vargas

doi:10.14295/ba.v1.0.35

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…Our findings for etofenprox are similar to those of Giolo et al (2006;2008), who studied the effect of this insecticide (0.015 g ai L -1 ) on T. pretiosum and Trichogramma atopovirilia Oatman & Platner, 1983 (egglarval, pre-pupal, and pupal stages) and verified that the emergence of F1 adults of both species was not affected by the insecticide, regardless of the immature stage studied, considering it harmless (class 1) to this beneficial.…”

Section: Discussionsupporting

confidence: 88%

Toxicity of some insecticides used in maize crop on Trichogramma pretiosum (Hymenoptera, Trichogrammatidae) immature stages

Souza

Carvalho

Moura

et al. 2014

Chilean J. Agric. Res.

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Fall armyworm Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) is an important pest of maize (Zea mays L.) crops in Brazil. The effects of beta-cypermethrin, chlorfenapyr, chlorpyrifos, spinosad, etofenprox, triflumuron, alpha-cypermethrin/teflubenzuron, and lambda-cyhalothrin/thiamethoxam on Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) immature stages were evaluated. Eggs of Anagasta kuehniella (Zeller, 1879) (Lepidoptera: Pyralidae), containing immature stages of the parasitoid were dipped in water solution pesticides, to evaluate their effects on emergence and sex ratio of F1 parasitoids. For F2 parasitoids, emergence, parasitism capacity, and sex ratio were evaluated. Beta-cypermethrin, chlorfenapyr, chlorpyrifos, and spinosad affected the emergence success of F1 T. pretiosum. Insects exposed to etofenprox and alpha-cypermethrin/teflubenzuron during the egg-larval period and to lambda-cyhalothrin/thiamethoxam during the pupal stage also suffered reduction in the emergence. Beta-cypermethrin affected the sex ratio of F1 T. pretiosum from host eggs treated during the egg-larval period; spinosad affected it during the egg-larval period and the pupal stage, whereas chlorpyrifos did the same when applied during the pupal stage. Chlorpyrifos also affected the sex ratio of F2 parasitoids, but only when applied during the egg-larval period, whereas chlorfenapyr reduced this trait when applied during the pre-pupal phase. Chlorpyrifos and alpha-cypermethrin/teflubenzuron affected the parasitism capacity of F1 females from eggs treated during the egg-larval period. Considering the overall effects, only etofenprox and triflumuron were selective on T. pretiosum when applied on parasitized A. kuehniella eggs. Further studies need to be carried out to verify the toxicity of the other pesticides under semi-field and field conditions.

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Section: Discussionsupporting

confidence: 88%

Toxicity of some insecticides used in maize crop on Trichogramma pretiosum (Hymenoptera, Trichogrammatidae) immature stages

Souza

Carvalho

Moura

et al. 2014

Chilean J. Agric. Res.

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“…Resultados para emergência de adultos de T. pretiosum foram previamente relatados para Glifosato Nortox ® por Giolo et al (2007), os quais observaram uma porcentagem de emergência de 102,20, 83,00 e 87,7% para as fases de ovo-larva, pré-pupa e pupa, respectivamente, sendo inferiores aos do presente trabalho, que foram de 111,88, 130,38 e 126,45% (Tabela 1, bioensaio II), indicando a emergência de mais de Quando se avaliou a toxicidade dos herbicidas sobre os adultos de T. pretiosum oriundos de pupas pulverizadas, os resultados dos bioensaios não apresentaram diferenças significativas quanto ao parasitismo entre os tratamentos (Tabela 3). Os herbicidas que causaram reduções no parasitismo de T. pretiosum variaram de 2,50 a 16,38%, sendo todos classificados como inócuos (classe 1) (Tabela 3, bioensaios I e II).…”

Section: Resultsunclassified

Seletividade de formulações de glyphosate aplicado nos estádios imaturos de Trichogramma pretiosum

Nörnberg

Grützmacher²,

Giolo

et al. 2008

Planta daninha

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A seletividade de oito formulações comerciais de glyphosate registradas no Brasil (Roundup®, Roundup® WG, Roundup® Transorb, Polaris®, Gliz® 480 CS, Glifosato Nortox®, Glifosato 480 Agripec® e Zapp® Qi) foi avaliada sobre os estádios imaturos do parasitóide de ovos Trichogramma pretiosum, bem como seus efeitos sobre os adultos emergidos, em condições de laboratório (temperatura de 25±1 ºC, umidade relativa de 70±10%, fotofase de 14h e luminosidade de 500 lux). Os bioensaios consistiram na pulverização da calda herbicida, na concentração de 14,4 mg L-1 de equivalente ácido de glyphosate, sobre ovos de Anagasta kuehniella contendo em seu interior o parasitóide nos estádios imaturos de ovo-larva, pré-pupa e pupa. Reduções na emergência de adultos em relação à testemunha foram utilizadas para mensurar os efeitos dos tratamentos. Aos adultos do parasitóide emergidos de pupas pulverizadas foram ofertados ovos do hospedeiro A. kuehniella, sendo avaliado o parasitismo de T. pretiosum de cada tratamento em relação à testemunha. Não houve efeito deletério significativo para nenhum dos herbicidas avaliados quando pulverizados sobre os diferentes estádios imaturos de desenvolvimento de T. pretiosum, de acordo com a IOBC. De forma similar, o parasitismo de adultos emergidos de ovos pulverizados na fase de pupa também não foi afetado.

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“…Molecules with detergent action have hydrophilic and lipophilic portions in their structure, which increases the solubility of the products in water, as well as can denature proteins, which can interfere in the interaction with the virus, reducing the mortality of caterpillars (RAFIKOVA et al, 2004;PETTER et al, 2012). Impact of differences regarding formulation on pesticide selectivity had also been previously reported in the literature for macro-organisms (GIOLO et al, 2006).…”

Section: Discussionmentioning

confidence: 78%

Mixture compatibility of Anticarsia gemmatalis nucleopolyhedrovirus (AgMNPV) with pesticides used in soybean

et al. 2022

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Anticarsia gemmatalis (Hübner: 1818) (Lepidoptera: Erebidae) is one of the main pests that affect soybean crops, causing defoliation. In the vegetative stages, defoliation occurs together with weeds, and in the reproductive stages with pathogens. In this sense, to maintain plant health, it is necessary to carry out the combined use of pesticides. Thus, this research determined the compatibility of the entomopathogenic virus AgMNPV with the main herbicides and fungicides used in soy at different times of the mixture. The artificial diet was immersed in the solutions of the pesticides and their mixtures and supplied to A. gemmatalis caterpillars, immediately and after one and two hours of mixing. The evaluation was performed by quantifying the number of dead caterpillars by mixing the AgMNPV virus with herbicides and fungicides, even after two hours of mixing if compatible. The observed scenarios showed a compatibility of the virus with the herbicides and fungicides, with mortality rates between 70 to 99% for A. gemmatalis.

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Toxicidade de Pesticidas Utilizados na Cultura do Pessegueiro para Estágios Imaturos de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae)

Cited by 6 publications

References 17 publications

Toxicity of some insecticides used in maize crop on Trichogramma pretiosum (Hymenoptera, Trichogrammatidae) immature stages

Toxicity of some insecticides used in maize crop on Trichogramma pretiosum (Hymenoptera, Trichogrammatidae) immature stages

Seletividade de formulações de glyphosate aplicado nos estádios imaturos de Trichogramma pretiosum

Mixture compatibility of Anticarsia gemmatalis nucleopolyhedrovirus (AgMNPV) with pesticides used in soybean

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