Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Spider mite"”.
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Management of Potato Leafhopper and Maple Spider Mite on Nursery Grown Maples
… (Harris) (Homoptera: Cicadellidae) and maple spider mite <em>Oligonychus aceris</em> (Shimer) (Acarina: Tetranychidae) are important pests of maple trees. Investigations determined how insecticide use and fertilization impacted the abundance of <em>E. fabae</em> and <em>O. aceris</em> on `Red …
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Effects of Nitrogen and Potassium Fertilizer on Willamette Spider Mite (Eotetranychus willamettei) (Acari: Tetranychidae)
The spider mite family (Tetranychidae) is a well known pest group in agriculture. Within this family, Willamette spider mite (Eotetranychus willamettei) causes physical harm and potential damage to grapevines (Vitis vinifera) along the central and north coast of California as well as Washington and …
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ANALYSIS OF VARIATIONS IN SUSCEPTIBILITY AND TRANSCRIPTOME RESPONSES IN TOMATO TO TWO-SPOTTED SPIDER MITE FEEDING
The two-spotted spider mite (Tetranychus urticae Koch) is a pest of tomatoes (Solarium lycopersicum) worldwide. The aim of this study was to generate data for comparison of spider mite resistant and susceptible tomato cultivar transcriptiome responses to mite feeding. Cultivars were screened for …
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Effect of Nitrogen Fertilizer Rates and Two-Spotted Spider Mite Incidence on 'Strawberry Festival' Strawberry Cultivar Performance
… information on nutrient and pest management is limited.</p> <p>The overall objective of this study was to determine the response of ‘St. Festival’ strawberry cultivar to different nitrogen fertilizer rates in order to develop a fertilization program for strawberries grown under high tunnel …
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Gas exchange characteristics of apple and peach leaves as influenced by European red mite and twospotted spider mite
Three densities of European red mite (ERM) (<i>Panonychus ulmi</i> Koch) and twospotted spider mite (TSM) (<i>Tetranychus urticae</i> (Koch)) were maintained on greenhouse-grown 'Imperial Delicious' apple (<i>Malus domestica</i>) and 'Redhaven' peach (<i>Prunus persica</i>) leaves. As ERM- and …
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Sex-specific aging in two-spotted spider mite Tetranychus urticae: Effects of diet, social environment and predator-induced stress
… other. To address these questions, I employed spider mite Tetranychus urticaeas my model organism, along with its specialist predator Phytoseiulus persimilis to generate predator-induced stress. The life-history traits (e.g. survival rate, adult lifespan and reproductive parameters) were …
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Influence of light conditions on the dynamics of Tetranychus urticae and its control by the predatory mite Neoseiulus californicus
… exposure on the dynamics of the two-spotted spider mite (Tetranychus urticae) and its control by the predatory mite Neoseiulus californicus. Three light treatments were applied: natural light, 12h LED light and 12h dark, and continuous 24h LED light. Spider mite and predator densities were …
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An evaluation of the rate of reproduction of the two spotted spider mite, Tetranychus telarius (L.), reared on gibberellin treated bean plants
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Entomology, 1958
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The Effect of Plant Nutrition on the Reproductive Rate and Susceptibility to Malathion of Two Strains of the Two-Spotted Spider Mite, Tetranychus telarius (L.)
… to malathion of two strains of the two-spotted spider mite. The two strains of mites used as test organisms are characterized by their widely different levels of susceptibility to phosphate acaricides. Lima bean plants were grown in quartz sand and supplied nutrient solutions containing varying …
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Oviposition and dispersal responses of the two spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) to fenvalerate and permethrin residues in soybeans Glycine max (L) Merrill
… to fenvalerate and permethrin. A petri dish spider mite trap which allows the partitioning of the dispersal response into spindown and walkoff categories was developed. Fenvalerate induced the more severe dispersal response. A greenhouse experiment was conducted to evaluate Tetranychus …
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Contribución al manejo integrado de ácaros tetraníquidos (Acari: Tetranychidae) que afectan a frutales de clima templado
… urticae is a cosmopolitan and polyphagous spider mite pest that causes problems in more than 150 economically important crops. This species is a key pest in many of these hosts. On the other hand, Panonychus ulmi is also a widespread and polyphagous species important as pest of fruit trees …
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Spatial Ecology and Remote Sensing in the Precision Management of Tetranychus urticae (Acari: Tetranychidae)in Peanut
The twospotted spider mite (TSSM), Tetranychus urticae Koch, is a common polyphagous pest in peanut agroecosystems. The mite has caused serious economic losses to peanut farmers in the Virginia-Carolina area, where approximately 20% of the peanuts are produced annually in the United States. Peanut …
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Water Use and Water Tolerance in the Riparian Species American Sycamore (Plantanus occidentalis L.) and How its Physiology Compares to the Coexisting Black Willow (Salix nigra Marshall)
… individuals to assess each species response to a spider mite infestation. Specific leaf area (m<sup>2</sup>/kg; field and greenhouse) and mean leaf area (determined as leaf area per meter of branch, m<sup>2</sup>/m; field only) were also compared. In addition, the potential propagation of <em>P. …
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Appendage development and early Distal-less regulation in arthropods: A study of the chelicerate Tetranychus urticae (Acarida)
… in the widely disparate chelicerate, the spider mite Tetranychus urticae – interpreting new data with that available for other arthropods. Having made a detailed study of spider mite embryonic (and post-embryonic) development, to provide a basis for understanding mRNA transcription and …
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Respiratory allergy and asthma associated with pesticide exposure amongst women in rural Western Cape
… and quantification of specific IgE to house dust mite, storage mite and spider mite). The outcome variables included doctor diagnosed asthma, adult onset asthma, current asthma, allergic sensitisation, allergic airway inflammation and the asthma symptom score. The asthma symptom score was a …
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Insect pest management in hemp in Virginia
… surveys revealed that cannabis aphid, twospotted spider mite (Tetranychus urticae Koch) (Acari: Tetranychidae), and hemp russet mite (Aculops cannabicola [Farkas]) (Acari: Eriophyidae) would likely cause production issues. Very little is known about the impact of insect defoliation in hemp so …
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Thermal biology and establishment potential of two non-native candidate biological control agents, Nesidiocoris tenuis Reuter (Hemiptera: Miridae) and Lysiphlebus testaceipes (Cresson) (Hymenoptera: Braconidae, Aphidiinae), in the U.K.
… a similar activity profile to the two-spotted spider mite \(Tetranychus\) \(urticae\) Koch (Acari: Tetranychidae). \(Lysiphlebus\) \(testaceipes\)demonstrated a greater ability to tolerate cold than \(N.\) \(tenuis\) but there was no indication of ability to diapause. With a developmental …
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Establishment potential of non-native glasshouse biological control agents, with emphasis on 'Typhlodromips montdorensis' (Schicha) (Acari: Phytoseiidae) in the UK
… montdorensis is a non-native predatory mite used for control of red spider mite and thrips, but is not yet licensed for use in the UK. Current legislation requires that non-native glasshouse biological control agents may not be introduced into the UK without a risk assessment of …
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Biology and ecology of the predatory mite Iphiseius degenerans (Berlese)(Acari: Phytoseiidae)
Iphiseius degenerans (Berlese) is a predatory mite belonging to the family Phytoseiidae. Phytoseiid mites are economically important predators of phytophagous mites and insects in greenhouse crops. Mass reared phytoseiid mites are commercially available and used, amongst others, against spider mite …
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Interaction of tomato plants infected by the nematode Meloidogyne javanica on aboveground herbivore Tetranychus urticae and on behaviour of its predator Phytoseiulus macropilis
… development and survival were evaluated. The spider mite in the first experiment did not show significant differences on immature development and survival,oviposition and preference. For the second experiment, the development of the herbivore T. urticae was affected, with high mortality …
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