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 20 of 295 for “"predatory"”.
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Predatory sequence learning for synthetic characters
The process of mammalian predatory sequence development offers a number of insights relevant to the goal of designing synthetic characters that can quickly and easily learn complicated and interesting behavior. We propose a number of principles for designing such learning systems, inspired by a …
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Oystercatchers and cockles : a predatory-prey study
Oystercatchers Haematopus ostralegus and cockles Cerastoderma edule were studied with the aim of understanding the behaviour of predators and the consequences which this behaviour has on the cockle population. At Traeth Melynog, Anglesey, the cockle density declined down the shore and those at the …
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Tests of Functional Equivalence Among Aquatic Predatory Vertebrates
… the issue of functional equivalence of aquatic predatory vertebrates. I specifically focused on the response of larval anurans to (i) variation in the identity of predator species, (ii) variation in trait characteristics possessed by predators and (iii) variation in the total biomass and density …
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Biology and potential biogeochemical impacts of novel predatory flavobacteria
Predatory bacteria are ubiquitous in aquatic environments and may be important players in the ecology and biogeochemistry of microbial communities. Three novel strains belonging to two genera of marine flavobacteria, Olleya and Tenacibaculum, were cultured from coastal sediments and found to be …
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Biology and potential biogeochemical impacts of novel predatory flavobacteria
Predatory bacteria are ubiquitous in aquatic environments and may be important players in the ecology and biogeochemistry of microbial communities. Three novel strains belonging to two genera of marine flavobacteria, Olleya and Tenacibaculum, were cultured from coastal sediments and found to be …
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Predatory and Mutualistic Interactions between Freshwater Minnows and their Predators
… "nest associates". In this work, I observe the predatory and potential mutualistic interactions between chubs, nest associates, and their predators. In Chapter 1, I observe spawning nests to identify the predators of adult chubs, nest associates, and embryos. I further investigate how nest …
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Behavioral Response of Sternotherus Odoratus to Conspecific and Predatory Chemosensory Cues
… including a control treatment (n=10), a predatory treatment (n=10), and two conspecific treatments. One conspecific treatment utilized stimuli from turtles with sealed Rathke's glands (n=18), while the other treatment utilized stimuli from turtles with functional Rathke's glands (n=17). …
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Ecological consequences of genetic variation in foraging behaviors of a predatory mite
… to variation in four foraging traits in the predatory mite, Phytoseiulus persimilis (Acari: Phytoseiidae): consumption rate, conversion efficiency, dispersal, and olfactory response related to prey. The dispersal response and olfactory sensitivity in predatory mites is modified by …
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Biology and ecology of the predatory mite Iphiseius degenerans (Berlese)(Acari: Phytoseiidae)
Iphiseius degenerans (Berlese) is a predatory mite belonging to the family Phytoseiidae. Phytoseiid mites are economically important predators of phytophagous mites and insects in greenhouse crops. Mass reared phytoseiid mites are commercially available and used, amongst others, against spider mite …
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Alfalfa Aphids From Pixel to Picture: Deciphering Symbiotic and Predatory Interactions Across Scales
Alfalfa is the cornerstone of Nevadan agriculture. Together with alfalfa aphids, these organisms exemplify the complex ecology of herbivory. This dissertation explores multiple dimensions of this ecology: the landscape context of aphid predation and biocontrol, interactions between the microbial …
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Predatory Impact of Exotic Cladoceran Cercopagis pengoi on the Zooplankton of Lake Ontario
… much of the crustacean community in a few days. Predatory effects exerted by Cercopagis on the Lake Ontario zooplankton community have decreased steadily since the species was established in the lake.
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Kinematics and Hydrodynamics of Cephalopod Turning Performance in Routine Swimming and Predatory Attacks
… turning performance of <em>L. brevis</em> during predatory attacks on shrimp and fish prey (Chapter 4).</p> <p>Both <em>L. brevis</em> and <em>S. bandensis</em> demonstrated high maneuverability, having the lowest measures of length-specific turning radii reported to date for any aquatic taxa. …
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Interacting Premotor Networks Mediating Behavioral Selection in the Predatory Marine Snail Pleurobranchaea Californica
These results suggest that premotor neurons may have distinct multifunctional or dedicated roles in behavioral selection. Multifunctional neurons like As1-4 may excite multiple networks, whereas one role for dedicated network neurons is to exclude incompatible behavior by inhibiting other …
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Interacting Premotor Networks Mediating Behavioral Selection in the Predatory Marine Snail Pleurobranchaea Californica
These results suggest that premotor neurons may have distinct multifunctional or dedicated roles in behavioral selection. Multifunctional neurons like As1-4 may excite multiple networks, whereas one role for dedicated network neurons is to exclude incompatible behavior by inhibiting other …
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Behavioral and Reproductive Plasticity in Eastern Mosquitofish (Gambusia Holbrooki) in Response to Predatory Cues
… the effects of exposure to this and other predatory cues during a single pregnancy cycle. I hypothesized that immediate exposure to the cues would provoke a clear behavioral reaction, and long-term exposure would cause G. holbrooki to alter nutrient provisioning to developing embryos, …
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Vocal responses of Blue Jays (Cyanocitta cristata) to raptors that differ in predatory threat
<p>Anti-predator defense is an important adaptation in group-living organisms. Some species of flocking birds use referential calls to communicate predator presence and the level of threat posed by predators. Previous studies have revealed that two species in the corvid family, American Crows …
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A New Credit Scoring Model to Reduce Potential Predatory Lending: A Design Science Approach
… FICO model. It aims to address issues related to predatory lending and the financial exclusion affecting individuals often categorized as 'credit invisible,' 'credit unscorable,' 'unbanked,' and 'underbanked.' These individuals typically face difficulties in establishing or repairing a credit …
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