Fitness costs and life table parameters of highly insecticide‐resistant strains of <i>Plutella xylostella</i> (L.) (Lepidoptera: Plutellidae) at different temperatures

Steinbach, Denise; Moritz, Gerald; Nauen, Ralf

doi:10.1002/ps.4597

Cited by 51 publications

(42 citation statements)

References 35 publications

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“…Fitness costs associated with insecticide resistance, such as increased development time of larval and pupal stages, show a trade‐off in the sharing of various resources between resistant populations. These fitness costs have been observed in many other lepidopteran pests, including the tobacco budworm ( Heliothis virescens ), cotton bollworm ( Helicoverpa armigera ), pink bollworm ( Pectinophora gossypiella) , tobacco cutworm ( Spodoptera litura) , and diamondback moth ( Plutella xylostella) …”

Section: Discussionmentioning

confidence: 92%

Gossypol‐induced fitness gain and increased resistance to deltamethrin in beet armyworm, Spodoptera exigua (Hübner)

Hafeez

Liu

Jan

et al. 2018

Pest Management Science

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The reproductive capacity of S. exigua is significantly reduced in Delta-SEL and Gos-SEL populations compared with the control group (SS-Strain). Elevation of the major detoxification enzyme cytochrome P450 monooxygenase and esterase might have an important role in inducing tolerance to deltamethrin in gossypol-fed S. exigua populations. This study enhances our understanding of detoxification enzyme pathways for S. exigua gene expression and their role in responses to insecticides and plant secondary metabolites. © 2018 Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 92%

Gossypol‐induced fitness gain and increased resistance to deltamethrin in beet armyworm, Spodoptera exigua (Hübner)

Hafeez

Liu

Jan

et al. 2018

Pest Management Science

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“…Mite development time could thus be affected by the I1017F mutation by inefficient molting and a longer chrysalis stage. In support of this theory, Plutella xylostella strains that carry the I1042M mutation, which is located at the homologous position to the I1017F T. urticae mutation, had a significantly longer development time at 20 and 30°C, compared to strains lacking the mutation (Steinbach, Moritz, & Nauen, 2017). In addition to a shorter development time, the I1042M mutation is also associated with a lower fecundity in the resistant vs susceptible P. xylostella strains (Steinbach et al., 2017).…”

Section: Discussionmentioning

confidence: 95%

“…In support of this theory, Plutella xylostella strains that carry the I1042M mutation, which is located at the homologous position to the I1017F T. urticae mutation, had a significantly longer development time at 20 and 30°C, compared to strains lacking the mutation (Steinbach, Moritz, & Nauen, 2017). In addition to a shorter development time, the I1042M mutation is also associated with a lower fecundity in the resistant vs susceptible P. xylostella strains (Steinbach et al., 2017). It should however be noted that CrispR/Cas9 genome edited D. melanogaster flies that bear the T. urticae I1017F or the P. xylostella I1042M mutation do not exhibit a significant difference in time until eclosion, adult survival, or average daily fecundity, compared to wild‐type flies with an isogenic background (Douris et al., 2016).…”

Section: Discussionmentioning

confidence: 95%

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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“…Insect egg-period, the time from eggs laying to hatching, is closely related to temperature (Steinbach et al, 2017). The N. lugens egg-period was observed approximately 192 h (8 days) under incubation at 27 • C. In general, female adults laid eggs side by side under sheath of the rice stem, also called "an egg-stripe."…”

Section: Embryonic Development Of the N Lugensmentioning

confidence: 99%

An Overview of Embryogenesis: External Morphology and Transcriptome Profiling in the Hemipteran Insect Nilaparvata lugens

Fan

Pang

et al. 2020

Front. Physiol.

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During embryogenesis of insects, the morphological and transcriptional changes are important signatures to obtain a better understanding of insect patterning and evolution. The brown planthopper Nilaparvata lugens is a serious insect pest of rice plants, but its embryogenesis has not uncovered. Here, we described embryonic development process of the pest and found it belongs to an intermediate-germ mode. The RNAseq data from different times (6, 30, 96, and 150 h, after egg laying) of embryogenesis were then analyzed, and a total of 10,895 genes were determined as differentially expressed genes (DEGs) based on pairwise comparisons. Afterward, 1,898 genes, differentially expressed in at least two comparisons of adjacent embryonic stages were divided into 10 clusters using K means cluster analysis (KMCA). Eight-gene modules were established using a weighted gene co-expression network analysis (WGCNA). Gene expression patterns in the different embryonic stages were identified by combining the functional enrichments of the stage-specific clusters and modules, which displayed the expression level and reprogramming of multiple developmental genes during embryogenesis. The "hub" genes at each embryonic stage with possible crucial roles were identified. Notably, we found a "center" set of genes that were related to overall membrane functions and might play important roles in the embryogenesis process. After parental RNAi of the MSTRG.3372, the hub gene, the embryo was observed as abnormal. Furthermore, some homologous genes in classic embryonic development processes and signaling pathways were also involved in embryogenesis of this insect. An improved comprehensive finding of embryogenesis within the N. lugens reveals better information on genetic and genomic studies of embryonic development and might be a potential target for RNAi-based control of this insect pest.

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Fitness costs and life table parameters of highly insecticide‐resistant strains of Plutella xylostella (L.) (Lepidoptera: Plutellidae) at different temperatures

Cited by 51 publications

References 35 publications

Gossypol‐induced fitness gain and increased resistance to deltamethrin in beet armyworm, Spodoptera exigua (Hübner)

Gossypol‐induced fitness gain and increased resistance to deltamethrin in beet armyworm, Spodoptera exigua (Hübner)

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

An Overview of Embryogenesis: External Morphology and Transcriptome Profiling in the Hemipteran Insect Nilaparvata lugens

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