Effects of spirodiclofen on reproduction in a susceptible and resistant strain of Tetranychus urticae (Acari: Tetranychidae)

Pottelberge, Steven Van; Khajehali, Jahangir; Leeuwen, Thomas Van; Tirry, Luc

doi:10.1007/s10493-008-9226-y

Cited by 56 publications

(44 citation statements)

References 7 publications

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“…Moreover, the same symptomology of poisoning described previously for these two tetronic acid derivatives (Wachendorff et al 2002;Nauen et al 2005;Marcic 2007;van Pottelberge et al 2009;Marcic et al 2010a) was observed for spirotetramat, which points to the same mode of action of these three compounds on spider mites. Much stronger action of spirotetramat was registered on females treated at preovipositional period, compared to females treated at teleiochrysalis stage.…”

Section: Discussionsupporting

confidence: 82%

“…Spirodiclofen and spiromesifen are highly toxic to eggs and immatures of spider mites (Acari: Tetranychidae), whereas their activity against adult females is slower, with strong reduction of fecundity and fertility. In addition, spiromesifen acts similarly on juvenile stages and females of whiteflies (Wachendorff et al 2002;Nauen et al 2005;Bretschneider et al 2007;Marcic 2007;van Pottelberge et al 2009;Marcic et al 2010a).…”

Section: Introductionmentioning

confidence: 99%

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The effects of spirotetramat on life history traits and population growth of Tetranychus urticae (Acari: Tetranychidae)

et al. 2011

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The effects of spirotetramat, a tetramic acid derivative, on gross fertility, net fertility, female longevity and the instantaneous rate of increase of two-spotted spider mite, Tetranychus urticae (Acari: Tetranychidae) were investigated after treatment of female teleiochrysalises (the first assay) and pre-ovipositional females (the second assay). Spirotetramat was applied to the leaf discs by Potter spray tower and the following series of concentrations was applied: 200, 60, 18, 5.4 and 1.62 mg/l. In both assays after 24 h of exposure, surviving females without symptoms of poisoning were used for further procedure. In the first assay, gross fertility of treated females was reduced by 2.4-64.7% and net fertility by 12.4-88.8%, compared to the control. Gross fertility of the females treated with 1.62 and 5.4 mg/l did not significantly differ from the control, whereas all concentrations, except the lowest, significantly reduced net fertility and female longevity. Treatments with 200, 60, and 18 mg/l significantly reduced the instantaneous rate of increase. In the second assay, gross fertility and net fertility were reduced by 43.7-93.3% and 73.8-98.5%, respectively. All concentrations, except the lowest, significantly reduced gross fertility, whereas net fertility and longevity in all treated females were significantly lower compared to the control. All concentrations, except the lowest, significantly reduced the instantaneous rate of increase, provided that concentrations of 200, 60 and 18 mg/l caused population decline. The effects of spirotetramat and its impact on T. urticae management are discussed.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

The effects of spirotetramat on life history traits and population growth of Tetranychus urticae (Acari: Tetranychidae)

et al. 2011

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“…Two hundred adult females were placed as the founding population and maintained on potted nonsprayed bean plants in a Panasonic climate chamber (MLR‐352H‐PE), at 28°C with a photoperiod of 16:8 hr light:dark. To assess etoxazole resistance over time, larval bioassays were performed as previously described by Van Pottelberge, Khajehali, Van Leeuwen, and Tirry (2009). Briefly, 50 adult females were allowed to lay eggs for 5 hr on the upper side of 9 cm 2 square‐cut bean leaf disks on wet cotton wool.…”

Section: Methodsmentioning

confidence: 99%

Fitness costs of key point mutations that underlie acaricide target‐site resistance in the two‐spotted spider miteTetranychus urticae

Bajda

Riga

Wybouw

et al. 2018

Evolutionary Applications

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The frequency of insecticide/acaricide target‐site resistance is increasing in arthropod pest populations and is typically underpinned by single point mutations that affect the binding strength between the insecticide/acaricide and its target‐site. Theory predicts that although resistance mutations clearly have advantageous effects under the selection pressure of the insecticide/acaricide, they might convey negative pleiotropic effects on other aspects of fitness. If such fitness costs are in place, target‐site resistance is thus likely to disappear in the absence of insecticide/acaricide treatment, a process that would counteract the spread of resistance in agricultural crops. Hence, there is a great need to reliably quantify the various potential pleiotropic effects of target‐site resistance point mutations on arthropod fitness. Here, we used near‐isogenic lines of the spider mite pest Tetranychus urticae that carry well‐characterized acaricide target‐site resistance mutations to quantify potential fitness costs. Specifically, we analyzed P262T in the mitochondrial cytochrome b, the combined G314D and G326E substitutions in the glutamate‐gated chloride channels, L1024V in the voltage‐gated sodium channel, and I1017F in chitin synthase 1. Five fertility life table parameters and nine single‐generation life‐history traits were quantified and compared across a total of 15 mite lines. In addition, we monitored the temporal resistance level dynamics of populations with different starting frequency levels of the chitin synthase resistant allele to further support our findings. Three target‐site resistance mutations, I1017F and the co‐occurring G314D and G326E mutations, were shown to significantly and consistently alter certain fitness parameters in T. urticae. The other two mutations (P262T and L1024V) did not result in any consistent change in a fitness parameter analyzed in our study. Our findings are discussed in the context of the global spread of T. urticae pesticide resistance and integrated pest management.

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“…O espirodiclofeno atua no desenvolvimento dos ácaros inibindo a síntese de lipídios com intensa ação ovicida e elevada toxicidade aguda às formas imaturas, e causa nas fêmeas adultas bloqueio da oviposição, resultando na morte até cinco dias devido ao acúmulo de ovos no corpo, como verificado em Tetranychus urticae Koch (Tetranychidae) (WACHENDORFF et al, 2002), além da redução na fecundidade e fertilidade ( VAN POTTELBERGE et al, 2009)…”

Section: Resultados E Discussão Primeiro Experimento (2008)unclassified

Efeito de agrotóxicos sobre Calepitrimerus vitis (Nalepa, 1905) (Acari: Eriophyidae) na região da campanha do Rio Grande do Sul

Siqueira

Grützmacher²,

Cunha³

et al. 2012

Rev. Bras. Frutic.

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O Rio Grande do Sul apresenta a maior área de cultivo de videiras no Brasil; neste Estado, a Região da Campanha possui características edafoclimáticas adequadas à produção de cultivares viníferas de origem europeia e apresentou, na primeira década deste milênio, significativa expansão de área. A partir de 2005, o ácaro-da-ferrugem-da-videira, Calepitrimerus vitis, passou a ser encontrado com frequência nos vinhedos da Campanha. Nos países onde esta espécie está estabelecida, reduções significativas na produção de uva são observadas, e a necessidade de controle é constante, não havendo, até o momento, produtos autorizados no Brasil para o controle de C. vitis. O presente trabalho objetivou avaliar diversos agrotóxicos quanto à eficiência de controle de C. vitis em um vinhedo comercial, na região da Campanha do Rio Grande do Sul. O experimento foi conduzido durante os anos de 2008 e 2009, comparando o nível de infestação nas plantas através do emprego de armadilhas adesivas. No ano de 2008, a eficiência de controle durante o outono não diferiu da testemunha. O emprego de enxofre em uma única pulverização no outono, ou em duas pulverizações, sendo uma no outono e outra na primavera, controlou eficientemente C. vitis na primavera. Os acaricidas abamectina e espirodiclofeno foram eficientes no controle de C. vitis na primavera, tanto com uma única pulverização, como com duas pulverizações, sendo uma no outono e outra na primavera. No outono de 2009, os tratamentos com espirodiclofeno e cihexatina foram eficientes no controle de C. vitis. O ácaro-da-ferrugem-da-videira é controlado eficientemente com pulverizações de cihexatina, enxofre ou espirodiclofeno no outono ou durante a primavera com abamectina, enxofre ou espirodiclofeno.

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Effects of spirodiclofen on reproduction in a susceptible and resistant strain of Tetranychus urticae (Acari: Tetranychidae)

Cited by 56 publications

References 7 publications

The effects of spirotetramat on life history traits and population growth of Tetranychus urticae (Acari: Tetranychidae)

The effects of spirotetramat on life history traits and population growth of Tetranychus urticae (Acari: Tetranychidae)

Fitness costs of key point mutations that underlie acaricide target‐site resistance in the two‐spotted spider miteTetranychus urticae

Efeito de agrotóxicos sobre Calepitrimerus vitis (Nalepa, 1905) (Acari: Eriophyidae) na região da campanha do Rio Grande do Sul

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