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Showing 1 to 13 of 13 for “"Chelydra serpentina"”.
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Aspects of the Niche of the Common Snapping Turtle, 'Chelydra Serpentina Serpentina', in Iowa
… Large gaps exist in knowledge of the niche of Chelydra s. serpentina in Iowa. Much of the literature is anecdotal and some is contradictory. Aspects of this turtle's niche investigated were growth and maturity, habitat preference, daily and seasonal activity cycles, response to a severe …
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Individual and Interactive Impacts of Mercury and Agriculture on Reproduction in a Freshwater Turtle, Chelydra serpentina
… on hatch success and offspring phenotype in Chelydra serpentina. Of the 150 turtle nests found during this research, 84% were located in human-disturbed soils. Nest site characteristics were similar among nests found in Hg contaminated and reference areas. Agriculture and control nests did …
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Reproduction and Movement Patterns of the Common Snapping Turtle (Chelydra Serpentina) Inhabiting a Hypothermic Reservoir in Southwest Missouri
… 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 tributary of Lake …
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Behavior, Nest Site Selection and Success of Black Terns (Chlidonias niger)
… 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 chick survival in the …
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Geographical Distribution and Morphometrics of South Dakota Turtles
… painted (Chrysemys picta bellii), snapping (Chelydra serpentina), spiny softshell (Apalone spinifera), smooth softshell (Apalone mutica), false map (Graptemys pseudogeographica), ornate box (Terrapene ornata ornata) and Blanding’s (Emydoidea blandingii) turtle. Relevant historic and more …
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Influence of Ultraviolet Light, Righting Response, and Community Structure in Aquatic Turtles
… specimens, 33% total mass) and snapping turtles (Chelydra serpentina) (28% total specimens, 63% total mass). These data suggest that the turtle community contributes a significant proportion of the stream's biomass and imply that its ecological role within this greatly altered ecosystem is of …
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Seed Dispersal by Aquatic Turtles
… aquatic turtles, the common snapping turtle (Chelydra serpentina) and the red-eared slider (Trachemys scripta). Large numbers of mulberry (Morus spp.), barnyard grass (Echinochloa crus-galli) and curly dock (Rumex crisus) seeds were observed in the feces of sliders and snappers from a farm …
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Utilization of Stormwater Retention Ponds by Aquatic Turtles in Montgomery County, Virginia
… abundant native taxa, the snapping turtle (Chelydra serpentina) and the eastern painted turtle (Chrysemys picta picta), and one non-native taxa, the red-eared slider (Trychemys scripta elegans). The occurrence of turtles was associated with larger ponds with permanent or near permanent …
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Mercury Bioaccumulation and Adverse Reproductive Effects in Snapping Turtles Inhabiting a Historically Contaminated River
… 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 developed …
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Spontaneous directional preferences in taxonomically and ecologically distinct organisms: examining cues and underlying mechanisms
… 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 mechanism involving a …
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Predatory and Mutualistic Interactions between Freshwater Minnows and their Predators
… these predators was the common snapping turtle (Chelydra serpentina; "turtle"). Additionally, I found that activity, abundance, nest size (area), and nest growth had a significant effect on predator encounter rate, attracting predators to seek spawning nests for prey. In Chapter 2, I investigate …
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The Effects of Commercial Harvest on the Density and Demography of Aquatic Turtles in Arkansas
… subrubrum; N = 81), common snapping turtles (Chelydra serpentina; N = 56), river cooters (Pseudemys concinna; N = 11), southern painted turtles (Chrysemys dorsalis; N = 7), Mississippi map turtles (Graptemys pseudogeographica kohnii; N = 7), and alligator snapping turtles (Macrochelys …
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Spatial ecology, habitat use, genetic diversity, and reproductive success: measures of connectivity of a sympatric freshwater turtle assemblage in a fragmented landscape
… (Chrysemys picta), common snapping turtle (Chelydra serpentina), and eastern musk turtle (Sternotherus odoratus) revealed that E. blandingii made long distance movements and readily moved between wetlands, whereas the other species were more restricted to aquatic movements. However, S. …