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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 20 of 136 for “"foraging behavior"”.
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Evolving Efficient Foraging Behavior in Biologically-Inspired Robot Swarms
… present a swarm robotics system that mimics the foraging behaviors of seed-harvester ants, employing evolutionary computation and machine learning to mitigate the adverse effects of unreliable information, variable environments, congestion bottlenecks, and sparse resources. We describe a …
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Foraging Behavior of Spring Bees and Their Agricultural Implications
<p>Colony Collapse Disorder has greatly reduced honey bee populations in the last decade. Native bees have been largely neglected in research, and their floral preferences may have agricultural implications because native bees ameliorate the demand to rely solely on non-native bees. In this work, …
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Environmental Influences on Subterranean Termite Foraging Behavior and Bait Acceptance
Reticulitermids were significantly more likely to discover subterranean baits connected by physical guidelines than freestanding baits under both laboratory and field conditions. In the laboratory, subterranean termites built significantly longer tunnels adjacent to cellulosic guidelines than …
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Neural Mechanisms that Control an Innate Foraging Behavior in Caenorhabditis Elegans
… for survival. Thus, animals modify their foraging patterns based on recent experience and current conditions to increase their likelihood of finding food. One highly conserved foraging strategy is local search, an intensive exploration over several minutes of the region where food …
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Population Dynamics and Foraging Behavior of Gray Bats in Pittsburg, Ks
… 1999 and 9 in 2000. Adult males had an average foraging time of 70.95 minutes with a mean greatest distance from roost of 8.65 km. They had an average foraging perimeter of 22.57 km. Adult females had an average foraging time of 53.95 minutes. The mean foraging perimeter was 30.1 km with an …
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Integrating bioenergetics and foraging behavior : the physiological ecology of larval cod (Gadus morhua)
How do larval cod, Gadus morhua, balance foraging effort against the high cost of swimming in a viscous hydrodynamic regime? A respirometry system was developed to measure the activity metabolism of individual larvae. The cost of swimming was modeled as a power-performance relationship (energy …
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FORAGING BEHAVIOR OF DUCKS DURING SPRING MIGRATION IN THE WABASH RIVER REGION, ILLINOIS
… competition, and life history characteristics on foraging strategies used by ducks. Using a randomized block design, I established a pair of 0.4 ha plots (block) in emergent, open water, and forested wetlands in the Wabash River Floodplain in eastern Illinois. I randomly selected one plot within …
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Foraging Behavior and Success of Herons and Egrets in Natural and Artificial Wetlands
… of natural wetlands. Therefore, I quantified the foraging behavior of herons and egrets (species that are dependent on wetlands for food) in natural and artificial wetlands in southeastern coastal Georgia and southern coastal South Carolina. I tested the hypothesis that wading birds would show …
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Foraging Behavior and Niche Overlap in Seven Species of North American Flycatchers (Tyrannidae)
Made available in DSpace on 2014-12-12T01:27:39Z (GMT). No. of bitstreams: 1 7309978.pdf: 2737853 bytes, checksum: 0d64439975eab15b267bab995b8b3fef (MD5) Previous issue date: 1972
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Integrating bioenergetics and foraging behavior : the physiological ecology of larval cod (Gadus morhua)
How do larval cod, Gadus morhua, balance foraging effort against the high cost of swimming in a viscous hydrodynamic regime? A respirometry system was developed to measure the activity metabolism of individual larvae. The cost of swimming was modeled as a power-performance relationship (energy …
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Stress eating? Causes and consequences of variation in foraging behavior in a challenging world
Foraging is one of the most fundamental behaviors for sustaining life. Yet, the drivers and effects of variation in foraging behavior are often not well understood. In this dissertation, I investigate both the causes of foraging choices – focusing on how the glucocorticoid stress response affects …
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Sensory Aspects of Foraging Behavior in the Least Weasel (Mustela Nivalis) (Prey Detection, Carnivora)
… an indoor grassland in an attempt to investigate foraging behavior from the perspective of the predator's sensory abilities. Five least weasels were filmed while foraging within a 2.4 x 2.4 m grassland of durum wheat. Trials were filmed under daylight conditions and during manipulations designed …
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Genetic Analysis of Bacterial Food Perception and its Influence on Foraging Behavior in C. elegans
… and accordingly alters development and behavior. In Chapter One, I discuss the relationship between C. elegans and its bacterial diet. The influence of food on behavior suggests the presence of a gut-“brain” axis that senses and communicates information about nutritional state to the …
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Foraging habitat niche comparisons and foraging behavior of seven species of flycatchers in southwest Virginia
Foraging habitats and foraging behavior for seven species of Tyrannid flycatchers were measured to examine interspecific habitat resource partitioning, niche breadth and niche overlap. Four of the species inhabited forested areas; Great Crested Flycatcher, Eastern Wood Pewee, Least Flycatcher and …
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Effects of Turbidity on Anti-Predator Response and Foraging Behavior in the Fountain Darter, Etheostoma fonticola
… visual ability resulting in altered animal behavior. Anti-predator response and successful foraging ability, both essential elements of ecological communities, are two aspects of behavior that can be affected by turbidity. The federally endangered fountain darter (Etheostoma fonticola) is an …
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Effects of Plant Damage, Herbivore-Associated Cues, and Learning on Foraging Behavior of a Parasitoid Wasp
<p>Behavioral assays of the parasitic wasp <em>Microplitis croceipes</em> Cresson (Hyrnenoptera: Braconidae) were made at the Coastal Plain Experiment Station, Tifton, GA during the summer of 2001, in a screened in mesh with a 5 X 5 cotton patch. I quantified the influence of plant and …
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Population Demographics And Active Foraging Behavior Of Copperheads (Agkistrodon Contortrix) At A Recreational Site In Eastern Kentucky
… been shown to affect snake thermoregulatory behavior and abundance, detailed studies of wild snake behavior are uncommon due to their cryptic nature. The goal of this study was to reduce human-wildlife conflict at a recreational site in Kentucky where copperhead snakes (Agkistrodon …
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Influences of Anthropogenic Noise on Flight Initiation Distance, Foraging Behavior, and Feeder Community Structure of Wild Birds
… how anthropogenic noise impacts daily behavior as well as community structure of wild birds. In the first component of this thesis, I assessed the distance at which a bird initiates flight or escape behavior (i.e., flight initiation distance or FID) in varying acoustic conditions. I …
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Population Ecology and Foraging Behavior of Breeding Birds in Bottomland Hardwood Forests of the Lower Roanoke River
… as seasonal limiting factors. Conversely, avian behavioral ecologists seldom emphasize the population dynamic consequences of habitat selection and reproductive success. This study describes the intersection of individual behavior and population regulation in the context of a new model of …
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