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 15 of 15 for “"Aggregation pheromone"”.
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Aggregation Pheromone Biosynthesis and Engineering in Plants for Stinkbug Pest Management
… 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 trap crops and agricultural practices for pest management. The …
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Toward developing pheromone emitting trap crops: Metabolic engineering of an aggregation pheromone for enhanced attraction of Phyllotreta cruciferae
Pheromone lures and trap crops are appealing pest management tools that use insect and/or plant volatiles to reduce pest populations on crops of interest. Generating pheromone-emitting trap plants may allow for a continuing and highly-specific attraction of insect pests without repeated and costly …
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Murgantia histrionica (Hahn): new trapping tactics and insights on overwintering survival
Harlequin bugs are orange and black aggregation pheromone emitting stink bug pests, specifically of cole crops such as kale, broccoli and collards. This nearly loyal crop preference makes an interesting challenge for trapping them and helping farmers predict pest severity. Harlequin bugs can be …
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Host plant relationships and chemical communication in the cerambycidae
… that live male beetles in traps produced an aggregation pheromone that attracted adults of both sexes of a different cerambycid species. Finally, I conducted a field study that showed that the efficiency with which pheromone traps captured cerambycid beetles was greatly improved by treating …
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Toward optimized surveillance of adventive Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) based on aspects of its foraging ecology
… parasitoid and its host. Inspection of felled pheromone-baited and non-baited A. altissima showed no effect of baiting with the H. halys aggregation pheromone on H. halys egg mass abundance. Similarly, captures of T. japonicus in pheromone-baited and non-baited trees were not significantly …
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Linking Semiochemical Ecology and Spatial Dynamics to Improve Integrated Pest Management of Striped Cucumber Beetle, Acalymma vittatum
… it important to reduce beetle activity before aggregations develop on young crop plants. This dissertation examined striped cucumber beetle semiochemical attraction, spatial capture patterns, baited-trap operating range, and early-season perimeter trap deployment to inform future selective …
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Pheromone communication and host-finding behaviour of Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae)
… pest of stored grain. Males produce a pheromone, with two components Dominicalure-1 (D 1) and Dominicalure-2 (D2), which is attractive to both sexes. However, little is known about the pheromone biology of R. dominica. This thesis presents new studies that used behavioural bioassay and …
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La comunicazione chimica in Blattaria: contributo al miglioramento della lotta
… in the production and the release of sexual pheromone. Cockroaches produce an aggregation pheromone that is excreted along with their frass and that consists of volatile and non-volatile compounds, mainly amines and steroidal glycosides. The effectiveness of faecal extracts obtained from …
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Chemical communication in cerambycid beetles and the molecular basis of olfaction
… cerambycids is mediated by long-range volatile aggregation or sex pheromones, but the pheromone chemistry is highly conserved, and many species of beetles produce and respond to identical compounds. This parsimony may yield powerful and efficient means to control species that are pests, but the …
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Investigations of the integrated pest management of Colorado potato beetle, Leptinotarsa decemlineata (Say): Host plant preference, development of semiochemical-based strategies, and evaluation of a novel insecticide
… [(S)-CPB I], a male-produced aggregation pheromone. Field studies were conducted to determine if the opposite enantiomer of the pheromone, (R)-CPB I had an effect on CPB in the field. Results revealed no differences in counts of all CPB life stages between untreated potato …
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Foraging ecology and sampling of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) and its host Halyomorpha halys (Stal) (Hemiptera: Pentatomidae) in wild host trees
… pyramid traps baited with a low-dose H. halys aggregation pheromone lure and deployed as vertical transects in the canopy of female tree of heaven (Ailanthus altissima (Mill.) Swingle), male tree of heaven, or hackberry (Celtis occidentalis L.), captured significantly more H. halys adults and …
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Aggregation, courtship, and behavioral interactions in European earwigs, Forficula auricularia L. (Dermaptera: Forficulidae)
… accompanying behavioral bioassays showed that aggregation occurred as a result of a pheromone located on the male cuticle, which is probably a minor component of the hydrocarbon profile. Approximately 88% of the detected volatiles on the cuticle were identified as a series of normal and …
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Proteomic studies of the pheromone biosynthetic pathway in the bark beetle, Ips pini, and molecular modeling of an insect-specific aldehyde oxidative decarbonylase, CYP4G2
… Ips pini, find a host tree and release an aggregation pheromone, ipdienol. Ipsdienol is produced de novo in midgut tissue and is released through the frass to signal other beetles to initiate a mass attack and colonize a tree. Both feeding and juvenile hormone III (JHIII) treatment …
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Optimisation of chemoenzymatic processes in asymmetric synthesis
… both enantiomers of 4-methyloctanoic acid, the aggregation pheromone of the rhinoceros beetles of the genus Oryctes. The unique aspect of this enantioselective synthesis was the overall regio- and enantioselective introduction of the methyl group to the octanoic acid chain. This work is part of …
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Monitoring and management of thrips populations in vegetables, row crops, and greenhouse crops in Virginia
… ThriplineAMS (Syngenta Bioline Ltd., Oxnard, CA) pheromone lure, containing the aggregation pheromone of F. occidentalis. In spring 2009 and 2010 lure experiments were conducted in several different agroecosystems including: a tomato and potato field in Painter, VA, a cotton and peanut field in …