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Showing 1 to 14 of 14 for “"Snapping turtles"”.
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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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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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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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Aspects of the Niche of the Common Snapping Turtle, 'Chelydra Serpentina Serpentina', in Iowa
… home ranges, and homing ability. Procedure. Turtles collected statewide and preserved were 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 …
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Geographical Distribution and Morphometrics of South Dakota Turtles
… information has been published on South Dakota turtles compared to the neighboring Midwest states. This study was conducted to compile literature relevant to the species of turtles that occur in the state; develop proper protocols for field collection, morphological measurement, live animal …
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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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Spontaneous directional preferences in taxonomically and ecologically distinct organisms: examining cues and underlying mechanisms
… alignment responses of animals. We show that snapping turtles (Chelydra serpentina) and crayfish (Cambarus sciotensis) spontaneously align their body axes relative to the magnetic field. In snapping turtles, this response is sensitive to low-level radio frequency fields, consistent with a …
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The Effects of Commercial Harvest on the Density and Demography of Aquatic Turtles in Arkansas
… this region. As awareness of the plight of turtles worldwide increases and studies continue to find current levels of commercial harvest unsustainable, biologists and conservation organizations have begun petitioning states to close or strictly regulate commercial turtle harvest. Baseline …
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Behavior, Nest Site Selection and Success of Black Terns (Chlidonias niger)
… events including an instance in which a common snapping turtle (<em>Chelydra serpentina</em>) depredated an entire brood of chicks. This study is the first to document snapping turtles as a predator of Black Terns. My results provide further insight into potential factors limiting Black Tern …
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Influence of Ultraviolet Light, Righting Response, and Community Structure in Aquatic Turtles
Turtles are exposed to UV-B rays through basking, and since vitamin D3 is essential to the uptake of dietary calcium, UV-B light is considered important for growth in these animals. I studied the effects of UV-B light bulbs on growth in slider turtles (Trachemys scripta: N = 243) from hatching to …
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Assessment of a freshwater turtle reintroduction
… of a reintroduced population of Alligator Snapping Turtles (Macrochelys temminckii) with reference to the suitability of this species for reintroduction and the prognosis of the reintroduction. Using radio telemetry, I found dispersal was size-dependent, but turtles displayed no maladaptive …