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 60 for “"snapping"”.
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Bending, Creasing, and Snapping of Soft, Slender Structures
… instability. A knowledge of the timescale of snapping is crucial in designing advanced functional materials. We perform the simplest experiment of poking an soft, elastomer arch at its apex till it snaps. Combining our experiments with analytical model we are able to predict the purely …
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Snapping Turtle Life History on Lacreek Refuge, South Dakota
Investigations of the snapping turtle population on Lacreek National Wildlife Refuge in south-central South Dakota were conducted during 1965-67. Turtles captured by trapping, “hooking”, boxing nests and catching nesting females were measured, marked and released. Turtles were marked by …
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Spatial Behavior and Population Estimation of the Alligator Snapping Turtle (Macrochelys Temminckii)
<p>The alligator snapping turtle (<em>Macrochelys </em><em>temminckii</em>) is the largest freshwater turtle species in North America. Populations have been subjected to over a century of commercial and recreational harvest, causing large scale population declines. Additionally, their aquatic …
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Demography of Alligator Snapping Turtles (Macrochelys Temminckii) Along a Fishing Pressure Gradient
… fishing gear is a threat to the alligator snapping turtle (<em>Macrochelys temminckii</em>). The spatio-temporal persistence of this threat and its impacts on <em>M. temminckii</em> populations has not been quantified. I quantified the density of passive fishing gear and the demographic …
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Reproductive Biology of Alligator Snapping Turtles: Behavior, Reproductive Investment, and Nest Predation
… aspects of reproduction in the alligator snapping turtle (Macrochelys temminckii), a model organism that is of great conservation interest. Specifically, I studied: (1) nesting behavior and (2) maternal reproductive investment patterns in a captive alligator snapping turtle population …
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Reproductive Biology and Conservation Genetics of the Alligator Snapping Turtle (Macrochelys Temminckii)
<p>abstract: The alligator snapping turtle (Macrochelys temminckii) is a highly aquatic turtle only found in Gulf of Mexico drainages. The biology of this species remains relatively unknown, despite years of harvest and use as a zoological attraction. The purposes of this study were to (1) …
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Aspects of the Niche of the Common Snapping Turtle, 'Chelydra Serpentina Serpentina', in Iowa
… used in growth maturity studies. A population of snapping turtles was monitored to provide information on the other aspects mentioned. Findings. Growth is accomplished in an activity period of 204 days and a 145 day feeding period with growth beginning in late May. Most males are mature by the end …
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Aquatic Turtle Community Dynamics in Relation to Reintroduction of Alligator Snapping Turtles, Macrochelys Temminckii
The alligator snapping turtle (Macrochelys temminckii) is a long-lived species that merits reintroduction because the species has declined significantly throughout its range. The purposes of this study were to: 1) report the findings of a reintroduction project that was initiated in 2008 and 2) to …
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Effect of Ingestion by Alligator Snapping Turtles (Macrochelys Temminckii) on Seeds of Riparian Vegetation
<p>The alligator snapping turtle (Macrochelys temminckii) is a large freshwater turtle that inhabits many lotic water bodies in the Southeastern United States. The species consumes primarily fish but also consumes large amounts of vegetation including seeds of common persimmon (Diospyros …
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Diet and Feeding Behavior of Juvenile Alligator Snapping Turtles (Macrochelys Temminckii) in Eastern Oklahoma
In Oklahoma, the alligator snapping turtle (Macrochelys temminckii) has experienced declines and recent efforts to conserve the species have focused on reintroducing captive-reared juveniles. The effect of the reintroduction on other aquatic turtles is not known and feeding behavior of juvenile M. …
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The Development of Spring-Actuated Mechanisms in Mantis Shrimp (Stomatopoda) and Snapping Shrimp (Alpheidae)
… Gonodactylaceus falcatus (Stomatopoda) and the snapping shrimp Alpheus heterochaelis (Alpheidae). I also examine the plasticity of LaMSA development in the snapping shrimp Alpheus heterochaelis. The mantis shrimp’s spring-actuated strike is one of the best-studied LaMSA mechanisms; however, we …
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Investigation of the Effects of Social Experience on Snapping Intensity in Equus caballus Foals
… to examine three aspects of Equus caballus foal snapping behavior. First, it suggested that the previous theoretical explanation for snapping established by behavioral researchers was incorrect. Second, as a means of suggesting an alternative hypothesis, this study proposed that snapping behavior …
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Mercury Bioaccumulation and Adverse Reproductive Effects in Snapping Turtles Inhabiting a Historically Contaminated River
… in a long-lived aquatic omnivore, the common snapping turtle (Chelydra serpentina). I collected blood, nail, muscle, and egg tissues from turtles inhabiting an Hg contaminated gradient at a historically contaminated river, the South River, located in central Virginia. In my first chapter, I …
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Detection, Occupancy, Abundance, and Mercury Accumulation of the Alligator Snapping Turtle (Macrochelys temminckii) in Texas
… temminckii</em>,<em> </em>i.e., alligator snapping turtle) within the southwestern periphery of its distribution. Hierarchical modeling suggested the distribution of the species is more affected by watershed-scale land-cover than local habitat, and provided a baseline estimate of average …
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Sex Determination And Differentiation In The Common Snapping Turtle - A Reptile With Temperature-Dependent Sex Determination
… determination and differentiation in the common snapping turtle, a reptile with TSD. </p> <p> I used differential-display PCR to clone a candidate gene involved in TSD, the cold-inducible RNA binding protein (Cirbp). The temporal and spatial patterns of Cirbp mRNA and protein expression during …
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Predictive Habitat Model for the Snapping Shrimp Genus <i>Alpheus</i> in the Coastal Southeastern United States
… to shore). The predicted probabilities of snapping shrimp absence were comparable to those found in the training data set for the Gulf of Mexico. The AUC indicated that the best model built on the Gulf of Mexico training data set was not able to predict snapping shrimp distribution in the …
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Reproduction and Movement Patterns of the Common Snapping Turtle (Chelydra Serpentina) Inhabiting a Hypothermic Reservoir in Southwest Missouri
… reproductive and movement patterns of the common snapping turtle, (Chelydra serpentina), two populations were sampled from April through August, 1995-97. The study sites included a hypothermic cove located near Rockaway Beach, Missouri, and a normothermic cove associated with Bull Creek, a …
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Analysis and Modeling of Snap Loads on Synthetic Fiber Ropes
… transfers from a slack state to a taut state, a snapping action occurs and produces a large tensile force which is known as a snap load. Energy is dissipated during this snap load, and it is proposed to use synthetic fiber ropes as a type of passive earthquake damper in order to take advantage of …
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Acoustic source localization
… noises. One source of impulse-like noise is the snapping shrimps. The acoustic signals they emit from snapping their claws hinder technologies, but can also be used as a source of ambient noise illumination due to the rough uniformity in their spatial distribution. Understanding the spatial …
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