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 8 of 8 for “"Flea beetles"”.
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Economic injury levels and feeding studies for the potato flea beetle, Epitrix cucumeris (Harris), in Manitoba
… in cages in field plots, and densities of potato flea beetles, Epitrix cucumeris (Harris), and Colorado potato beetles, Leptinotarsa decemlineata (Say), were introduced in different multiples of naturally occurring field densities. Colorado potato beetles were introduced only in the early part of …
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Flea Beetle Populations and Their Management on Vegetables in Virginia
Flea beetles (FB), (Coleoptera: Chrysomelidae), are common pests of cabbage and eggplant, but little is known about the FB populations in Virginia, their impact on yield, or the most effective control methods. This research investigates the FB populations and impact of their feeding injury on …
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The biology of the tobacco flea beetle in Virginia: Epitrix parvula (F.) (Coleoptera: Chrysomelidae)
The tobacco flea beetle is one of the major insect pests of tobacco in Virginia. The adult injures the plants by eating small irregular holes in the leaves and the larva by feeding on the roots of the plants. The tobacco flea beetle hibernates in the adult stage in leaves and trash around the edge …
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Aggregation Pheromone Biosynthesis and Engineering in Plants for Stinkbug Pest Management
… and other agricultural pests such as bark beetles and flea beetles are known to synthesize terpenoids as aggregation pheromones. Knowledge of the genes and enzymes involved in pheromone biosynthesis may allow engineering of pheromone biosynthetic pathways in plants to develop new forms of …
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Genetic Analysis of the Quorum Sensing Regulator EsaR
… The bacteria are injected into the plant by corn flea beetles during feeding. They colonize the xylem and overproduce a capsular exopolysaccharide (EPS) at high cell densities. The production of EPS is regulated by an EsaI/EsaR quorum sensing mechanism, homologous to the LuxI/R system. Although …
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Toward developing pheromone emitting trap crops: Metabolic engineering of an aggregation pheromone for enhanced attraction of Phyllotreta cruciferae
… of producing the pheromone of the crucifer flea beetle Phyllotreta cruciferae in transgenic plants. P. cruciferae is an important pest of Brassica crops. In the presence of a host plant, males emit an aggregation pheromone, which attracts both males and females. Himachaladiene, a …
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Biomechanics of the fibrillar adhesive system in insects
… the fibrillar adhesive system of leaf beetles as a model. To investigate the functional implications of hairy pad design, the attachment performance between hairy pads of the leaf beetle Gastrophysa viridula and smooth pads of stick insects (Carausius morosus) was compared. Adhesive and …