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 16 of 16 for “"locomotor performance"”.
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The Ontogeny of Escape Responses and Locomotor Performance in Sceloporus Woodi
… may be optimized such that their decreased locomotor abilities and use of immobility for concealment changes at a particular body size. I examined this hypothesis in Sceloporus woodi, a small terrestrial lizard. Field measurements of escape velocity were recorded on an ontogenetic series of …
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The role of electronsensory signals on the locomotor performance of the weakly electric fish apteronotus albifrons
Animal locomotion performance responds to different ecological factors that shape relevant aspects of behavior. Conspecific signals is one of these factors and operates in a wide range of contexts. In schooling fish, coordinated movement is based on visual or mechanical cues and signals. In …
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Seasonal Patterns of Plasma Testosterone Levels, Bite Force, and Locomotor Performance in Non-Territorial Male Lizards, Aspidoscelis Sexlineata
… underlying mechanisms that govern variation in performance capacity, however, remain unclear. The steroid hormone testosterone mediates numerous traits associated with reproduction in male vertebrates and has been hypothesized to mediate variation in performance. This study examined seasonal …
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Effects of Testosterone and Training on Performance in the Non-Territorial Lizard (Aspidoscelis Sexlineata)
… for 2 weeks; however, they failed to increase performance during that time. Endurance decreased for all lizards in the lab study; suggesting that captivity negatively affects endurance. A second study was then conducted to examine the effects of training and T supplementation on locomotor …
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Quantifying Metagonimoides oregonensis infection distribution and effects among stream salamander hosts
… effect of cercariae exposure (n=0, 20, 60) on locomotor performance of D. quadramaculatus, Eurycea wilderae and Hyla versicolor. I did not see any effect on locomotor performance for any of the species.
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Home Field Advantage: Sprint Sensitivity to Ecologically Relevant Substrates in Lizards
… given to the effects of different substrates on locomotor performance in an attempt to link ecology and morphology. Sprint sensitivity is the decrease in sprint speed due to change in substrate. This study measures sprint sensitivity to substrate rugosity among six lizard species that occupy …
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The Dynamics of Non-Equilibrium Gliding in Flying Snakes
… feature of snake flight, but its effects on locomotor performance and stability are unknown. Chapter 2 describes a new non-equilibrium framework to analyze gliding animals and how the pitch angle affects their translational motion. Chapter 3 combines flying snake glide experiments and …
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The Effects of Locomotor Posture on Kinematics, Performance and Behavior during Obstacle Negotiation in Lizards
… I observed high variation in kinematics, locomotor performance and behavior when crossing obstacles. Within species, mean forward speed (velocity) and kinematics did not change between treatments when employing a bipedal posture. However among species, kinematics differed when using a …
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Effects of Temperature on Foraging, Endurance, and Sprint Speed in Agkistrodon Piscivorus and Nerodia Sipedon
… Studies on the thermal sensitivity of performance in reptiles are useful in understanding how the thermal environment affects ecological function. I examined the effects of temperature on foraging success and locomotion in two sympatric semi-aquatic snakes, the Northern water snake …
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Sublethal effects of an acetylcholinesterase-inhibiting pesticide on fitness-related traits in the western fence lizard (Sceloporous occidentalis)
… I quantified the effects of carbaryl on sprint performance energy acquisition, and energy allocation, traits which could have important implications for the animal's ability to avoid predators, capture prey, and grow and reproduce. I found that at the highest dose concentration, lizards …
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Cigarette Smoke Exposure in Drosophila Reveals Wnt-Mediated Remodeling of Airway Structure and Systemic Physiology
… success, shortened lifespan, impaired locomotor activity, metabolic imbalance, increased apoptosis of tracheal epithelial cells, and disrupted tracheal architecture. Using tracheal-specific genetic manipulations, we systematically examined the effects of canonical Wnt/β-catenin …
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The plasticity of life histories during larval development and metamorphosis, using amphibians as study organisms.
… (SVL), head width, tail morphology, duration and locomotor performance). Morphological measures and the duration of the life stage were shown to vary with temperature and predation risk. As predicted, higher temperatures and the risk of predation resulted in faster development through …
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Target-directed Locomotion: A Critique Of The Short-term Memory For Spatial Locations Proposed By Thomson
… and walking did not result in a deterioration of performance. A 30 s delay did result in less accurate performance, however. Thus, a slowly decaying short-term memory was demonstrated.;The second part of the thesis examined the role of visual context in the control of locomotor accuracy. Being …
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Bridging the gap: Biomechanics of vertical gap-crossing in snakes and cicadas
… the age of the subject to influence climbing performance remains unknown. Additionally, the influence of arboreal surface structure on animal locomotion is not limited to insects, or even limbed animals. Limbless animals, such as arboreal snakes, must contend with these same issues. While …
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Functional anatomy, osteogenesis and bone microstructure of the appendicular system of African mole-rats (Rodentia: Ctenohystrica: Bathyergidae)
… more specialized to increase digging ability and locomotor performance, whereas solitary species showed a relatively less specialized fossorial phenotype, and a diminished locomotor ability. This may contribute to foraging strategies in social species which are known to have more complex and …