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 14 of 14 for “"Spider mites"”.
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<i>Neoseiulus fallacis</i> (Garman) (Acari: Phytoseiidae) as a potential biological control agent for spider mites (Acari: Tetranychidae) in Virginia vineyards
Outbreaks of spider mites (Acari: Tetranychidae) in vineyards have been increasing with the expansion of the industry in Virginia. Only three effective acaricides are registered on grapes and as resistance begins to occur, control options are limited. Biological control of spider mites by …
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Efficacy of indigenous pesticidal plants for tomato and brassica pest management in Malawi
… highly constrained by insect pests including red spider mites Tetranychus evansi and the aphids (Brevicoryne brassicae and Myzus persicae). The results on field surveys revealed that majority of smallholder farmers have considerable knowledge about pesticidal plants and reported Tephrosia vogelii, …
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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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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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Bioinformatics and Next Generation Sequencing: Applications of Arthropod Genomes
… and analyzing the genomes of three Tetranychus spider mites with three completely different feeding behaviors, we uncovered genomic signature variations and indicative of pest adaptations; (2) we sequenced, assembled and annotated five Brevipalpus flat mite genomes and their corresponding …
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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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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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The Effects of Three Rodenticides on Nontarget Small Mammals and Invertebrates
… were found between control and treated sites. Spider mites (Acarina) and crickets (Orthoptera) were not affected by the 3 rodenticides. Immediate impacts of zinc phosphide occurred on ant (Hymenoptera) densities and long-term impacts were found in August 1984. Strychnine alone immediately …
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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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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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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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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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Using selected acaricides to manipulate Tetranychus urticae Koch populations in order to enhance biological control provided by phytoseiid mites
The twospotted spider mite, Tetranychus urticae Koch, is a serious pest of many ornamental plants (Johnson and Lyon, 1991). Pesticide resistance, the high cost of pesticides and loss of production time have raised interest by growers to introduce predatory phytoseiid mites to manage twospotted …
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Establishment of COTESA VESTALIS (HALIDAY) and DIADROMUS COLLARIS (GRAV.) parasitoids of the DIAMONDBACK MOTH, PLUTELLA XYLOSTELLA (L.), and assessment of the effectiveness of C. VESTALIS as a biological control agent in Zambia
… the most important vegetable pests, followed by spider mites (19.8%) mainly on tomato, P. xylostella (13.7%) on brassicas and bollworm (12.9%) on tomato.The larval populations of P. xylostella were recorded from April to December and the pupal populations were recorded from June to early …