Residual and sublethal effects of fenpyroximate and pyridaben on the instantaneous rate of increase of Tetranychus urticae

Kim, Minsik; Sim, Cheolho; Shin, Dong Ho; Suh, Eunho; Cho, Kijong

doi:10.1016/j.cropro.2005.08.010

Cited by 66 publications

(48 citation statements)

References 13 publications

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“…Los acaricidas de mayor uso en esta región son el Cascade ® 5% CD ( Sólo en la producción de flores que se cosecharán en fechas importantes (14 de febrero, 10 de mayo y 12 de diciembre), se aplican acaricidas más costosos como abamectinas, clofentezine, clorfenapyr, pyridaben y spirodiclofen. Este esquema desordenado de aplicación de varios acaricidas provoca un mosaico de resistencia cruzada (Kim et al, 2005;Lin et al, 2009). Para Zumpahuacán, propargite manifiesta una eficacia biológica; 80%, misma que los productores consideran satisfactoria.…”

Section: Resultados Y Discusiónunclassified

Resistencia de cuatro poblaciones del acaro (Tetranychus urticae Koch.) a propargite en rosa de corte (Rosa x hybrida) en el Estado de México, México

Robles-Bermúdez

Rodríguez-Maciel

et al. 2018

Remexca

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Section: Resultados Y Discusiónunclassified

Resistencia de cuatro poblaciones del acaro (Tetranychus urticae Koch.) a propargite en rosa de corte (Rosa x hybrida) en el Estado de México, México

Robles-Bermúdez

Rodríguez-Maciel

et al. 2018

Remexca

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“…Non-lethal concentrations of pesticides affects physiology and behavior of arthropods causing, for instance, reduction of fertility, foraging interference, repellence, feeding deterrence, changes in biological parameters, morphological abnormalities, interferences in foraging behavior, and reduced growth rate (Teodoro et al, 2005;Kim et al, 2006;Marcic, 2007;Desneux et al, 2007;Teodoro et al, 2009;Cordeiro et al, 2010).…”

Section: Scientific Notementioning

confidence: 99%

Toxicity of neem oil to the cassava green mite Mononychellus tanajoa (Bondar) (Acari: Tetranychidae)

Silva

Teodoro

Oliveira

et al. 2013

Chilean J. Agric. Res.

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Neem (Azadirachta indica A. Juss.)-derived pesticides have been used against a wide range of agricultural pests including tetranychid mites. Approaches combining lethal and sublethal toxicity studies of neem pesticides towards tetranychid mites are necessary to a comprehensive evaluation of such products. Here, we evaluated the lethal and sublethal toxicity of the neem oil Bioneem to the cassava green mite Mononychellus tanajoa (Bondar) by integrating lethal concentration (LC) with population growth and biological parameter studies. According to Probit analyses the concentration of neem oil Bioneem which kills 50% of the population (LC50) of M. tanajoa was 3.28 µL cm -2 , which is roughly twice the field concentration recommended of this biopesticide to control pest mites (1.7 µL cm -2 ). The growth rate of the cassava green mite steadily decreased with dosages of neem oil. Furthermore, sublethal concentrations of the neem oil corresponding to the LC50 reduced the periods of the immature stages of M. tanajoa resulting in a shorter developmental time. Similarly, the number of eggs per day and the number of eggs per female per day, a proxy for fecundity, were drastically reduced in M. tanajoa females exposed to the LC50 of neem oil. Based on our comprehensive approach we conclude that the neem oil showed lethal as well as sublethal toxicity on growth rate and biological parameters such as duration of immature stages and fecundity of the cassava green mite M. tanajoa and it could be used as an ecological alternative for the management of this pest.

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“…Moreover, lethal and sublethal effects could be integrated as a population-level response using population growth rates as endpoints (Robertson and Worner, 1990;Stark et al, 1997;Stark and Banks, 2003). This approach has been used in bioassays with spider mites (Marčić, 2003(Marčić, , 2005(Marčić, , 2007Teodoro et al, 2005;Kim et al, 2006 ;Li et al, 2006;Marčić and Ogurlić, 2006). The objective of this study was to expand our knowledge on sublethal effects of spiromesifen on T. urticae and evaluate these effects in terms of improving the pest's population management.…”

Section: Introductionmentioning

confidence: 99%

The effect of spiromesifen on the reproductive potential of Tetranychus urticae koch (Acari: Tetranychidae)

et al. 2009

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SUMMARYLaboratory bioassays were conducted to evaluate the effects of spiromesifen on the fecundity, fertility and population growth of two-spotted spider mite (Tetranychus urticae Koch) after treatment of pre-ovipositing females with five acaricide concentrations: 180 mg/l (maximum recommended concentration for use in glasshouses against spider mites), 18 mg/l, 1.8 mg/l and 0.18 mg/l (the last one was discriminative for eggs and immatures in preliminary studies, i.e. produced 100% mortality of those stages) and 0.018 mg/l. After 24h exposure, the percentages of females surviving treatment without visible symptoms of poisoning were 50% (180 mg/l), 45% (18 mg/l), 51% (1.8 mg/l), 74% (0.18 mg/l), 96% (0.018 mg/l) and 98% (0 mg/l). Over the first four days after treatment, the females that survived 180 mg/l and 18 mg/l laid no eggs. The total number of eggs laid after treatment with these two concentrations was reduced to less than 2% against the control by the end of the trial. The females that survived 1.8 mg/l laid 50% less eggs, compared to the control, while the number of eggs laid by the females treated with 0.18 mg/l and 0.018 mg/l were 19% and 4% lower, respectively. Over the initial four days, egg hatch rates in treatments were 73-87%, and 92-93% in the control. Significant statistical differences between gross fecundity (FCg) and gross fertility (FTg) values in the control and treatments were detected for females surviving 180 mg/l, 18 mg/l and 1.8 mg/l. On the other hand, only the net fertility (FTn) value of females treated with 0.018 mg/l showed no statistically significant difference from the control value. Treatments with 180 mg/l and 18 mg/l significantly reduced the instantaneous rate of increase (r i ) 6, 8 and 10 days after treatment, compared to the control. The negative r i values in those treatments indicated a declining population. Sublethal effects of spiromesifen and its impact on T. urticae management are discussed.

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Residual and sublethal effects of fenpyroximate and pyridaben on the instantaneous rate of increase of Tetranychus urticae

Cited by 66 publications

References 13 publications

Resistencia de cuatro poblaciones del acaro (Tetranychus urticae Koch.) a propargite en rosa de corte (Rosa x hybrida) en el Estado de México, México

Resistencia de cuatro poblaciones del acaro (Tetranychus urticae Koch.) a propargite en rosa de corte (Rosa x hybrida) en el Estado de México, México

Toxicity of neem oil to the cassava green mite Mononychellus tanajoa (Bondar) (Acari: Tetranychidae)

The effect of spiromesifen on the reproductive potential of Tetranychus urticae koch (Acari: Tetranychidae)

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