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Data from: Independently evolved and gene flow‐accelerated pesticide resistance in two‐spotted spider mites
<p>Pest species are often able to develop resistance to pesticides used to control them, depending on how rapidly resistance can emerge within a population or spread from another resistant population. We examined the evolution of bifenazate resistance in China in the two‐spotted spider mite (TSSM) <em>Tetranychus</em> <em>uticae</em> Koch (Acari: Tetranychidae), one of the most resistant arthropods, by using bioassays, detection of mutations in the target <em>cytb</em> gene, and population genetic structure analysis using microsatellite markers. Bioassays showed variable levels of resistance to bifenazate. The <em>cytb</em> mutation G126S, which confers medium resistance in TSSM to bifenazate, had previously been detected prior to the application of bifenazate and was now widespread, suggesting likely resistance evolution from standing genetic variation. G126S was detected in geographically distant populations across different genetic clusters, pointing to the independent origin of this mutation in different TSSM populations. A novel A269V mutation linked to a low‐level resistance was detected in two southern populations. Widespread resistance associated with a high frequency of the G126S allele was found in four populations from the Beijing area which were not genetically differentiated. In this case, a high level of gene flows likely accelerated the development of resistance within this local region, as well as into an outlying region distant from Beijing. These findings, therefore, suggest patterns consistent with both local evolution of pesticide resistance as well as an impact of migration, helping to inform resistance management strategies in TSSM.</p>
Figure 2 in Development and life table parameters of the Phytoseius corniger Wainstein (Acari: Phytoseiidae) feeding on the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) under laboratory conditions
Figure 2. The age-specific survival rate (lx), and fecundity (mx) of Phytoseius corniger fed on Tetranychus urticae under laboratory conditions (25 ± 2 °C, 55 ± 5% of RH, and 16L: 8D h photoperiod).
Figure 1 in Development and life table parameters of the Phytoseius corniger Wainstein (Acari: Phytoseiidae) feeding on the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) under laboratory conditions
Figure 1. Age-stage specific survival rate (sjx) of the parent cohort of bisexual Phytoseius corniger fed on Tetranychus urticae under laboratory conditions (25 ± 2 °C, 55 ± 5% of RH, and 16L: 8D h photoperiod). Note: L stands for larva, N1 for protonymph, and N2 for deutonymph, respectively.
Figure 5 in Grafting increases superoxide dismutase and catalase activity to overcome the impact of the two-spotted spider mite on eggplant growth and productivity
Figure 5 Influence of TSSM infestation density on chlorophyll a+b (A) and carotenoids (B) content in grafted and non-grafted eggplant leaves. Means followed by the same letter(s) are not significantly different.
Figure 3 in Grafting increases superoxide dismutase and catalase activity to overcome the impact of the two-spotted spider mite on eggplant growth and productivity
Figure 3 Effect of grafting on fruit number, fruit weight per plant and average fruit weight in grafted A338 on STT3 and non-grafted plants. The asterisk indicates statistical significance (P <0.05), and (ns) indicates not significant (P> 0.05) between two treatment analyzed by Two-tailed paired Student t-test.
Figure 1 in Grafting increases superoxide dismutase and catalase activity to overcome the impact of the two-spotted spider mite on eggplant growth and productivity
Figure 1 Monthly abundance of TSSM egg (A), nymph (B) and adult (C) stages in grafted and nongrafted eggplants. Means followed by the same letter(s) are not significantly different.
Fig. 1 in Efficiency Against The Two-Spotted Spider Mite Tetranychus Urticae And Prey-Age-Related Choice Of Three Predatory Mites
Fig. 1. Number of adult spider mites surviving in the presence of predatory mites at different predator densities. Light grey boxes represent treatments with low predator densities, dark grey boxes represent treatments with high predator densities. Boxes show the median and the 25–75 percentiles; dashed lines indicate the range
Fig. 3. Spiraea japonica L in The Spider Mite Schizotetranychus Spireafolia (Acari, Tetranychidae), Specific Pest Of Spiraea In The A. V. Fomin Botanical Garden
Fig. 3. Spiraea japonica L. infested with Sch. spireafolia mites: a — upper surface of leaf, b — lower surface of leaf.
Fig. 2 in The Spider Mite Schizotetranychus Spireafolia (Acari, Tetranychidae), Specific Pest Of Spiraea In The A. V. Fomin Botanical Garden
Fig. 2. Morphological characteristics of Sch. spireafolia from A. V. Fomin Botanical Garden, Kyiv, Ukraine: a — female x10; b — male x10; c — dorsal setae x100; d — palp tarsus of female x100; e — palp tarsus of male x100; f — empodium of tarsus I of female x100; g —
Figure 1 in Laboratory evaluation of Beauveria bassiana, some plant oils and insect growth regulators against two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae)
Figure 1. Infection caused by Beauveria bassiana on Tetranychus urticae, (a, b) dead female mites due to mycosis, (c) dead mite in control.
Figure 1 in Use of homeophathic preparations for red spider mite, Tetranychus urticae (Acari: Tetranychidae) control in strawberry plants
Figure 1. Degree of a) Incidence, and b) severity caused by T. urticae in strawberry plants 30 and 60 days after applying the treatments: Distilled water (Ctl); 6 and 30 CH Strawberry leaves homeopathic (Agroh); 6 and 30 CH Bovista (Bov); 6 and 30 CH Belladonna (Bellad); 6 and 30 CH Arnica (Árni) and 6 and 30 CH Ferrum sulphuricum (FS). Treatments with the same letter are not significantly different between them (p <0.05) (n = 8).
Figure 4 in Can host plants affect egg predation of two-spotted spider mite by Macrolophus pygmaeus (Hemiptera: Miridae)?
Figure 4. Age-specific survival rate (lx), age-specific predation rate (kx), and age-specific net predation rate (qx) of Macrolphus pygmaeus fed on Tetranychus urticae eggs reared on tomato and sweet pepper.
Figure 2 in Can host plants affect egg predation of two-spotted spider mite by Macrolophus pygmaeus (Hemiptera: Miridae)?
Figure 2. Age-specific survivorship (lx), age-stage-specific fecundity (fxj), age-specific fecundity of the total population (mx), and age-specific maternity (lxmx) of Macrolophus pygmaeus fed on Tetranychus urticae eggs reared on tomato plant and sweet pepper.
Figure 1 in First DNA-barcode for the genus Aegyptobia (Trombidiformes: Tenuipalpidae) and molecular barcodes of spider mites (Trombidiformes: Tetranychidae) from Iran
Figure 1. Neighbor-Joining tree of the COI sequences using Tamura-Nei model. Scale bar represents number of nucleotide substitutions per site. Bootstrap was 1000 replicates. Numbers on nodes represent bootstrap values.
Figure 2 in Economic injury level of date spider mite, Oligonychus afrasiaticus (Acari: Tetranychidae) on six commercial date cultivars
Figure 2. Regression between mite-day as an independent variable and fruits injury rate as a dependent variable in the different date cultivars studied in 2018.
Fig. 2 in Spatial modeling of red spider mite Oligonychus punicae (Acari: Tetranychidae) in avocado crop
Fig. 2. Density maps of Oligonychus punicae Hirst, in avocado crop, by sampling month in plots of Temascaltepec municipality (Mexico). Red to orange to yellow to white indicates a gradual transition from high density of O. punicae to an absence of the species.
Fig. 1 in Spatial modeling of red spider mite Oligonychus punicae (Acari: Tetranychidae) in avocado crop
Fig. 1. Density maps of Oligonychus punicae Hirst, in avocado crop, by sampling month in plots of Tenancingo municipality (Mexico). Red to orange to yellow to white indicates a gradual transition from high density of O. punicae to an absence of the species.
Fig. 4 in Greenhouse evaluation of neonate and adult applications of Coleomegilla maculata (Coleoptera: Coccinellidae) to control twospotted spider mite infestations
Fig. 4. Spider mite infestation levels in each treatment 20 d afer treatment application. Data represent the non-transformed mean number of mites, at specified developmental stage, per square cm of leaf surface (abaxial) ± SEM (n = 4). Different letters above bars indicate significant difference (P <0.05, Holm-Sidak multiple comparisons).
Fig. 2 in Greenhouse evaluation of neonate and adult applications of Coleomegilla maculata (Coleoptera: Coccinellidae) to control twospotted spider mite infestations
Fig. 2. Temperature fluctuations (only daily high temperatures are charted) during the course of the experiment.
Fig. 3. Representative samples from initial experiment interrupted and lef untended for 17 d in Greenhouse evaluation of neonate and adult applications of Coleomegilla maculata (Coleoptera: Coccinellidae) to control twospotted spider mite infestations
Fig. 3. Representative samples from initial experiment interrupted and lef untended for 17 d. Plants treated with lady beetles recovered from extreme stress; infested and untreated plants could not grow new leaves (no recovery).
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Allen Brain Atlas
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