Global ETD Search
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Showing 1 to 20 of 20 for “"Flight activity"”.
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Flight activity and hemolymph diacylglyceride concentrations in Heliothis zea (Boddie) (Lepidoptera:Noctuidae)
… The effect of age, diurnal rhythms, and flight activity on hemolymph 1,2-diacylglyceride concentrations in male and female Heliothis zea (Boddie) (Lepidoptera: Noctuidae) were quantitated. The HPTLC method involved a two-stage, one dimensional solvent system, 1 ). …
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Ocelli and octopamine and their effects on cabbage looper moth flight activity
… intensity, and duration of cabbage looper moth flight activity were examined. This was achieved by studying the flight activity of control, sham, and anocellate moths with and without octopamine treatment. Sham and anocellate moths were produced by cauterization in last-instar larvae, of ocellar …
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Diversity and flight activity of Staphylinidae in a citrus orchard of the Catania Plain (Sicily)
… study aims to investigate the diversity and flight activity of Staphylinidae in a citrus orchard of the Catania Plain (Sicily) using different sampling methods (car-net, window traps and pit-fall traps). The study looks at the complex of flying rove beetles with the aim of defining …
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Influence of flight activity and octopamine on hemolymph trehalose titers in Heliothis zea (Boddie) (Lepidoptera: Noctuidae)
… various ages and times of the day and related to flight activity. Effects of octopamine injection or stress on trehalose levels were also quantified. Flight activity was measured with a 32-channel computerized actograph that simulated sunrise at 0300 EST (Eastern Standard Time) and sunset at 1700. …
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Flight Activity, Oviposition Pit Distribution, and Emergence Densities of Monochamus titillator and M. carolinensis in the Ozark-St. Francis National Forest in Arkansas
… the same ecological niche – similar seasonal flight patterns, life history, and host material. The objectives of this study were to determine diurnal or nocturnal height flight patterns of M. titillator and M. carolinensis, compare heights at which Monochamus fly, and examine within tree …
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Phenology of the European corn borer, Ostrinia nubilalis (Hubner) (Lepidoptera: Pyralidae) in Virginia
Flight activity of adult European corn borer field populations was monitored in Bedford County (1980 - 1981), Painter (1958 - 1980), Blacksburg (1971 - 1973, 1975) and Warsaw, Virginia (1971 - 1972, 1981). Peak occurrence of flight activity was accurately estimated by measuring the accumulation of …
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Quantification of the effect of air traffic on terminal precinct ground traffic and the corresponding ground traffic effect on kerbside and parking infrastructure requirements at O.R. Tambo international airport
… a relationship between travel demand created by flight activity and terminal precinct ground traffic generation, specifically terminal frontage road and parking facility demand. This relationship should define: The number of person trips produced and attracted by flight activity; and The …
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Does Firm Performance Impact Perk Usage? Evidence From Flights of Corporate Jets
… ratios to look for a resulting shift in detailed flight activity. For firms that are considered large based on total assets, regression analysis finds a significant association between a change in equities and flight activity to external locations. The finding suggests that the nonpecuniary …
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Behavior of wild-type and laboratory-adapted cabbage loopers, Tr̲ich̲o̲pl̲u̲s̲i̲a n̲i (Hübner) (Lepidoptera:Noctuidae)
Three criteria, development, flight, and oviposition, were used to compare a laboratory-adapted and wild-type colony of Trichoolusia ni. The laboratory-adapted colony was further examined to determine the effect of larval crowding and starvation on the above criteria. The laboratory-adapted colony …
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Effect of buckwheat (Fagopyrum esculentum) on the abundance and efficacy of the leafroller parasitoid (Dolichogenidea tasmanica) in a Blenheim vineyard : A dissertation submitted in the partial fulfilment of the requirements for the degree of Bachelor of Science with Honours at Lincoln University
… traps were also used to determine D. tasmanica flight activity in a buckwheat row. Higher numbers of the parasitoid were caught at the height at which the buckwheat grew compared with traps placed at the height of the vine foliage; this difference was significant. An attempt was also made to …
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The Plant Diet of Mosquitoes: Sugar Feeding on Ornamentals and Wildflowers
… biology, contributing to their survival, flight activity and reproductive output and thus fueling their role as deadly vectors of disease. To alleviate the issues faced by current control methods, such as increased insecticide resistance and environmental damage, novel control strategies …
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Annual Variation in Bee Community Structure in the Context of Disturbance (Niagara Region, South-Western Ontario)
… was characterized by three distinct periods of flight activity over the four years studied (early spring, late spring/early summer, and late summer). The number of bees collected in spring was significantly higher than those collected in summer. In 2003 and 2006 abundance was higher, seasons …
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Epidemiology, Aphid Vectors, Impact and Management of Tobacco Etch Potyvirus in Hot Peppers in Jamaica
… infections of TEV were associated with aphid flight activity. Over 30 species of aphids were collected on pepper farms in St. Catherine parish. These aphids included five known vectors of TEV, Aphis gossypii Glover, A. craccivora Koch, A. spiraecola Patch, Lipaphis erysimi Hille Ris Lambers …
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Rearing density effects on premigrant traits of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)
… An actograph was used to measure adult flight activity and was validated with videotape recordings of moths in actograph cages. Behaviors other than flying occurred; hence, computer-recorded counts were termed activity counts (one activity count was recorded each time a moth broke an …
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Taxonomic, biological, population dynamics and behavioural studies on sod webworms (Lepidoptera : pyralidae: crambinae and scopariinae) of some Waikato (New Zealand) hill country pastures
… common species); and adult behaviour, especially flight. Taxonomy is detailed for male and female adults (with accompanying genitalia figures) and for eggs, larvae and pupae where available. Nine species are involved: Orocrambus flexuosellus (Doubleday), and O. vitellus (Doubleday) (Crambinae); …
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Investigating bird flight characteristics and habitat use to better understand ornithological impacts of wind farms
… In this thesis I have highlighted how bird flight characteristics and habitat use can be better quantified and the consequences this may have for the assessment of the impacts of wind energy developments on birds.<br/>Assessing the risk of collision between birds and wind turbines is a …
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Collaborative rescheduling of flights in a single mega-hub network
Traditionally, airlines have configured flight operations into a Hub and Spoke network design. Using connecting arrival departure waves at multiple hubs these networks achieve efficient passenger flows. Recently, there has been much growth in the development of global single mega-hub (SMH) flight …
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Roles of dietary antioxidants and oxidative stress in mediating fitness related traits in birds
… can lead to increased ROS production is physical activity. In captive adult budgerigars, I found a relationship between the propensity to engage in active behaviours during undisturbed observations, and a measure of DNA damage. This suggests individual differences in oxidative stress may be partly …
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Satellite-based Analysis and Forecast Evaluation of Aviation Contrails
… of persistent contrail formation at the flight-by-flight level. Existing prediction methods that use numerical weather prediction (NWP) data from the ERA5 and HRRR models are compared to a nowcasting method that utilizes the aforementioned contrail detections and altitude estimates. This …
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Moult as a dynamic link in the annual cycle of birds: insights from seabirds and a long-distance migratory raptor
… I also explore whether nestlings grow flight feathers of equal quality as adults in a long-distance migratory raptor. The study of feather quality in birds is still in its infancy, but the few studies to date indicate that chicks compromise feather quality to minimise their nestling …