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Showing 1 to 20 of 32 for “"Bumblebee"”.
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CMV Infection Affects Bumblebee Pollination Behaviour and Plant Reproductive Success
… mosaic virus (CMV) were more attractive to bumblebees (Bombus terrestris) in free choice assays. I extended this work using Arabidopsis thaliana mutants with lesions in genes encoding factors in RNA silencing. In conditioning assays, I confirmed that plant VOC emission is controlled in part …
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Fatty Acids as a Potential Foraging Cue in Bumblebee Pollen Detection
Bee populations, both wild and commercially supplied, are on the decline. A diminishing availability of required nutritional components may be a major contributing factor. Understanding how bees are able to both detect and remember the locations of these dietary macromolecules will be a valuable …
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Floral resource preference, occupancy, and detection of bumblebee species in northeastern Illinois
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Perspectives from above: The role of altitude in bumblebee spatial orientation and navigation
… or their home location. Flying insects like bumblebees master these task despite their relatively small brain size. They acquire visual memories of their nest location, well hidden from predators, to return home after their forag- ing trips. With this thesis I contribute to the field of …
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Strategies for Survival: Avian Insectivores and a Batesian Mimic With Its Bumblebee Model
Made available in DSpace on 2014-12-14T07:04:04Z (GMT). No. of bitstreams: 1 7913447.pdf: 2487985 bytes, checksum: 1dae97158f0bf9773e6923d37086faf4 (MD5) Previous issue date: 1978
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Influence of Forest Management on Bumblebee-Plant Networks and Community Compositions in Eastern Kentucky Forest Openings
… have corresponded with substantial changes in bumblebee distribution, abundance, composition, and forage resource availability. Naturally occurring forest openings, barrens, and grasslands have historically provided important habitat for native bees across the otherwise forested landscape in …
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THERE IS NO PLANET B(EE): AN INTEGRATED APPROACH TO UNDERSTANDING DRIVERS OF POTENTIAL DECLINES IN BUMBLEBEE COMMUNITIES
… the functioning of most terrestrial ecosystems. Bumblebees (Hymenoptera: Apidae: Bombus) represent important agricultural and urban pollinator species as they are tolerant of the high disturbance rates that characterize agricultural and urban systems. Over the past four decades, declines in the …
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Efficacy of Nest Boxes for Wild Bumblebees as a Supplemental Pollination Strategy in Highbush Blueberry
… pollination strategy, yet in many respects wild bumblebee species (Bombus spp. L) are better suited. Studies on the use of nest boxes to augment wild bumblebee populations are limited and have focused solely on nest box occupation, without determining whether there is any subsequent increase in …
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A proteomic and cytological characterisation of the buff-tailed bumblebee (Bombus terrestris) fat body and haemolymph -An immune perspective
… (Linnaeus) is a widespread and important bumblebee pollinator of wild and cultivated crops and although found commonly across Europe, is available commercially to supplement pollination requirements. Due to their activity, B. terrestris workers encounter a variety of diseases which in …
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Foraging in a Complex World: From Individual Flight Performance to Collective Behavior in Bumblebees (Bombus Impatiens)
… is key to survival. For social insects such as bumblebees, successful foraging depends on a combination of individual traits (e.g. physiological and biomechanical performance of individual workers) and collective behavioral strategies for regulating food intake at the colony level. Here, I use …
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Desplazamientos altitudinales y características ecológicas de los abejorros (Bombues Spp.) de la Cordillera Cantábrica
… changes on community structure and composition. Bumblebees (Bombus spp.) are major pollinators in cold environments and mountains. Like many other pollinators, bumblebees are experiencing an ongoing worldwide decline, which has been associated to different components of global change, such as …
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Pollinator behaviour and the evolutionary genetics of petal surface texture in the Solanaceae
… Subgroup 9A (Mixta-Like) R2R3 MYB genes. Bumblebee behavioural experiments show that bees do not display a preference in favour of either conical- or flat-celled flowers while buzz pollinating. These results show that conical cells are a trait under more than a single simple selective …
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Scalable Byzantine State Machine Replication: Designs, Techniques, and Implementations
… development costs. The dissertation presents Bumblebee, a methodology for manually transforming CFT protocols to tolerate Byzantine faults using trusted execution environments that are increasingly available in commodity hardware. Bumblebee is based on the observation that CFT protocols are …
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Pollination ecology of the simultaneously flowering Impatiens capensis and I. pallida
… of the annual Impatiens capensis and I. pallida, bumblebees visit I. pallida almost exclusively even when the nutritional reward of I. pallida is removed. This phenomenon contradicts certain models proposed for foraging behavior in simultaneously flowering species and those dealing with optimal …
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Effects of Cucumber Mosaic Virus on Plant-Pollinator Relationships
… plants to emit volatile chemicals that attract bumblebees (Bombus terrestris). Bumblebees are important tomato pollinators but do not transmit CMV. For wild plants under natural conditions, helping host reproduction by encouraging bee visitation, pollination and increased host reproduction might …
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Automated Landing Site Evaluation for Semi-Autonomous Unmanned Aerial Vehicles
… relatively inexpensive, commercially available Bumblebee stereo vision camera was selected for this study. A "point cloud viewer" computer program was written to analyze point cloud data obtained from 2D images transmitted from the UAV to a remote ground station. The program divides the point …
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Friends in Low Places: Responses of a Benthic Stream Fish to Intra-Guild Alarm Cues
… minnows, and mosquitofish; alarm cues from Bumblebee Gobies (Brachygobius doriae) served as a negative (allopatric) control. We also tested the response of sympatric and allopatric darters to the damage-released alarm cues of Oklahoma Salamander. Darters exhibited a fright response to …
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Stereo visual simultaneous localisation and mapping for an outdoor wheeled robot: a front-end study
… a custom platform that consisted of a Point Grey Bumblebee (Discontinued) stereo camera and Nvidia Jetson TK1 processor. A stereo front-end feature tracking framework was described and evaluated both in simulation and experimentally where appropriate. It was found that scale adversely affected …
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