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Showing 1 to 20 of 41 for “"Diabrotica"”.
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Bionomics of Diabrotica Longicornis (Say) and Diabrotica Virgifera, Leconte (Coleoptera: Chrysomelidae)
Made available in DSpace on 2014-12-11T18:05:35Z (GMT). No. of bitstreams: 1 7105158.pdf: 5158071 bytes, checksum: 24c3480357b35050a4d903bc83979ac2 (MD5) Previous issue date: 1970
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Case Study of a Variant of Western Corn Rootworm, Diabrotica Virgifera Virgifera LeConte, in East Central Illinois
"We are working on this problem because growers do not have enough information that will enable them to practice sound IPM practices rather than just applying soil insecticides prophylactically at planting. In fact, findings from this research might enable growers to reduce the use of soil …
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Comparative Mechanisms for Resistance to Aldrin, Carbofuran, Fonofos, Terbufos, and Phorate in Four Species of Diabrotica Beetles
Made available in DSpace on 2014-12-14T07:03:59Z (GMT). No. of bitstreams: 1 7803956.pdf: 4887967 bytes, checksum: 124224a93efc322364e43de260871c22 (MD5) Previous issue date: 1977
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Gene Expression and Behaviors Relating to Rotation Resistance in the Western Corn Rootworm, Diabrotica Virgifera Virgifera (Coleoptera: Chrysomelidae)
… life cycle of the western corn rootworm beetle (Diabrotica virgifera virgifera, Coleoptera: Chrysomelidae), but behavioral resistance to crop rotation is a major problem. Resistant adult females exhibit reduced fidelity to corn due to increased locomotor activity and lay their eggs in the soil of …
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Laboratory and field evaluations of Virginia-type peanut (Arachis hypogea L.) cultivars for resistance to Diabrotica undecimpunctata howardi Barber
The southern corn rootworm (Diabrotica undecimpunctata howardi Barber) is the primary soil insect pest to peanuts (A rachis hypogaea L.) in Virginia and North Carolina. The newer cultivars, which are planted on the majority of the acreage, have not been extensively screened for rootworm resistance. …
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Discovery and Phylogeny of the Odorant Binding and Chemosensory Proteins of Diabrotica Virgifera Virgifera (Coleoptera: Chrysomelidae) and Rhagoletis (Diptera: Tephritidae)
… olfactory proteins from the agricultural pests, Diabrotica virgifera and Rhagoletis suavis. OBPs and CSPs were recovered using an expressed sequence tag approach. Their protein structures were characterized, and their intraspecific relationships and phylogenetic positions within the insect OBP …
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The role of digestive proteases in the rotation-resistant phenotype of the western corn rootworm, Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae)
The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a significant insect pest of maize in the United States, Canada and Europe. Until the mid 1990s, this pest was successfully controlled by annual crop rotation, alternating maize with a non-host …
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Influence of Different Crops on the Population Dynamics of the Western Corn Rootworm, Diabrotica Virgifera Virgifera LeConte, in East Central Illinois
… behavior of the western corn rootworm, Diabrotica virgifera virgifera LeConte, which is implicated in the decrease of effectiveness of the soybean-maize rotation as a pest management strategy in east central Illinois and northern Indiana. The influences of maize (Zea mays L.), soybean …
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Western corn rootworm (Coleoptera: Chrysomelidae; Diabrotica virgifera virgifera LeConte) emergence and abundance in transgenic cornfields with structured and seed blend refuges
… corn rootworm (Coleoptera: Chrysomelidae; Diabrotica virgifera virgifera LeConte) larvae have been managed using transgenic Bt (Bacillus thuringiensis Berliner) corn hybrids expressing toxic Cry proteins (i.e., Cry3Bb1, Cry34Ab1/35Ab1, mCry3a) for a decade. To delay western corn rootworm …
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Gut physiology and host-microbe interactions of the rotation-resistant variant of the western corn rootworm (Diabrotica virgifera virgifera LeConte) (Coleoptera: Chrysomelidae)
The western corn rootworm (WCR; Diabrotica virgifera virgifera LeConte) is an important chrysomelid pest of corn (Zea mays) in the US. WCR larvae feed on corn roots, while adult beetles may consume aboveground corn tissues. WCR larvae are nutritionally dependent on corn roots; completion of the …
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Spatial distribution of western corn rootworm (Diabrotica virgifera virgifera Leconte) trap counts and evaluation of a novel method for sampling soil pests of field corn
Studies were conducted in 1990 and 1991 to investigate two kinds of soil insects that attack field corn in Virginia. Corn rootworms, the most important of which is the western corn rootworm (WCR), feed on corn roots and have been sampled effectively using yellow sticky traps. The spatial …
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The Role of Attractants and Feeding Stimulants in The Selection of Cucurbita Flowers by Diabroticite Beetles, (Coleoptera: Chrysomelidae)
… potent attractant of the western corn rootworm, Diabrotica virgifera virgifera Le Conte and the striped cucumber beetle, Acalymma vittatum (Fabr.). The southern corn rootworm, Diabrotica undecimpunctata howardi Barber, however, was not attracted to indole baited traps. Western corn rootworm trap …
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Optimal Management of a Common Property Pest Under Risk: An Application to the Corn Rootworm
… is developed for the northern corn rootworm, Diabrotica longicornis, and the western corn rootworm, Diabrotica virgifera, insect pests of corn. Uncertainty and risk aversion are incorporated into an economic threshold model. Two control actions, soil insecticide and crop rotation, are …
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Chemical Ecology of Defense Compounds in Anasa Species (Heteroptera: Coreidae) and Volatile Attractants for Diabrotica Species (Coleoptera: Chrysomelidae) (Attractants, Glands, Corn Rootworms, Electron Microscopy, Squash Bug)
Two separate investigations of insect chemical ecology were conducted. The first study elucidated the ultrastructure of the metathoracic scent glands of Anasa tristis and the chemical composition of secretions from the metathoracic glands of A. tristis and A. armigera and the abdominal glands of A. …
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Analisi spaziale dei dati entomologici in ambiente GIS: prospettive di utilizzo nell'agricoltura di precisione
… il secondo inerente al monitoraggio di Diabrotica virgifera virgifera (diabrotica del mais) su scala regionale. Gli scopi specifici dei due casi studio sono stati: Caso studio 1 a) Monitorare lâ��entità della popolazione di Elateridi su scala aziendale mediante approccio geostatistico. …
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From pest management to education: A study of trap crops for the western corn rootworm (Diabrotica virgifera virgifera LeConte) and 3D models for teaching insect morphology and identification
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Identificación de las especies de crisomélidos asociados al cultivo del frijol en tres departamentos de Nicaragua
… fueron encontradas, de las cuales dos especies: Diabrotica balteata y Cerotoma ruficornis están reportadas como vectores de virus en el cultivo del frijol. En todas las zonas y épocas de estudio se encon1ró al menos una especie de crisomélido vector. A nivel general la especie Cerotoma …
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Disposition of Cucurbitacin as a Factor in Host Plant Selection by Diabroticite Beetles and Electrophoretic Analysis of the Coevolved Genus Cucurbita
… vs. unmetabolized cucurbitacin, suggest that Diabrotica virgifera virgifera, a grass specialist, and Acalymma vittatum, a cucurbit specialist, have lower rates of metabolic alteration than D. undecimpunctata howardi and D. balteata which are polyphagous and D. cristata.
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Responses of rotation-resistant and rotation-susceptible populations of the western corn rootworm to transgenic corn expressing cry toxins and validation of a damage function for corn rootworm larvae
The western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a significant insect pest of corn, Zea mays L. Yield losses and control costs associated with the corn rootworm complex—which includes the northern (Diabrotica barberi Smith & Lawrence) and southern …
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Functional and ecological investigations in Cucurbita: factors mediating fruit infections and insect interactions
… beetles such as western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), spotted cucumber beetle Diabrotica undecimpunctata howardi Barber (Coleoptera: Chrysomelidae), and the striped cucumber beetle, Acalymma vittatum Fabricius (Coleoptera: …
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