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Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Chemical Ecology, Fungal Interactions And Forest Stand Correlations Of The Exotic Asian Ambrosia Beetle, Xylosandrus Crassiusculus (Motschulsky) (Curculionidae), Eric Paul Ott
LSU Master's Theses
Increasing evidence of non-indigenous ambrosia beetles aggressively attacking hosts in their new environment in the United States has led to concern over the potential for damage to urban trees, nurseries, orchards, and forests. A novel technique of flooding host trees was devised to stimulate ambrosia beetle attacks, with ambrosia beetle attraction peaking four days following flooding. In-situ sampling identified significant differences in the composition, quantity and point of release (leaf or bole) of volatiles emitted by the flooded and non-flooded trees. Coupled gas chromatography electroantennographic detection revealed olfactory sensitivity by the ambrosia beetle Xylosandrus crassiusculus (Motschulsky) to 29 of these …
Effect Of Red Imported Fire Ant (Solenopsis Invicta Buren) On The Nesting Success Of Northern Bobwhite (Colinus Virginianus L.), Michael Andrew Seymour
Effect Of Red Imported Fire Ant (Solenopsis Invicta Buren) On The Nesting Success Of Northern Bobwhite (Colinus Virginianus L.), Michael Andrew Seymour
LSU Master's Theses
The Northern Bobwhite (Colinus virginianus L.) has experienced average yearly decline of 3% in the United States from 1966-2005. Factors implicated in decline include habitat destruction, alteration of farm practices, and red imported fire ant (RIFA) (Solenopsis invicta Buren). Effect of RIFA on bobwhites has been a hot topic leading to formation of polarized camps – those who believe RIFA have little effect and those who believe the effect will further threaten the species’ survival. The main objective of this study was to determine if RIFA affect nesting of bobwhites and at what stage in nesting birds are most vulnerable. …
Impact And Interaction Of Samea Multiplicalis (Lepidoptera: Pyralidae) And Cyrtobagous Salviniae (Coleoptera: Curculionidae) On Salvinia Minima In South Louisiana And The Foraging Behavior Of Solenopsis Invicta (Hymenoptera: Formicidae) On Salvinia Minima, Sunil Tewari
LSU Master's Theses
A field study was conducted in 2005 and 2006 to evaluate the impact and interaction of the herbivores Cyrtobagous salviniae Calder and Sands and Samea multiplicalis Guenee on common salvinia, Salvinia minima Baker in south Louisiana. It was a completely randomized experimental design in which treatments consisted of C. salviniae and S. multiplicalis feeding on common salvinia both independently and together along with a control. Our study revealed that treatments consisting of C. salviniae and S .multiplicalis feeding both independently and together had a significant impact on the biomass of common salvinia. Sampling done in October of both 2005 and …
Evaluating Precision Agricultural Technologies In A Louisiana Cotton Insect Pest Management System, Joshua Heath Temple
Evaluating Precision Agricultural Technologies In A Louisiana Cotton Insect Pest Management System, Joshua Heath Temple
LSU Master's Theses
A variable rate pesticide application system was developed and tested during 2001 for an agricultural aircraft in Louisiana. Using technology available to the agricultural aviation industry, a variable rate prescription of insecticide was successfully applied to a cotton field in 2002. These studies compared the efficacy and value of spatially variable insecticide (SVI) applications based on yield maps to the producer standard, whole-field broadcast treatments. Insecticide prescriptions were created from historical yield and production data. Treatments included whole-field broadcast sprays, yield-based SVI sprays, and profit-based SVI sprays. Twenty-two SVI applications were made to test fields from 2002-2005 using two aircraft …