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Showing 1 to 15 of 15 for “"Pseudemys"”.
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The Renin-Angiotensin System in The Freshwater Turtle Pseudemys Scripta
… system in this species. It was shown that Pseudemys scripta possess renal renin, renin substrate in the plasma, angiotensin converting enzyme activity, and vascular receptors specific for angiotensin. Kinetic analyses were performed on the turtle renal renin (kidney extract) plus turtle …
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Studies of atrial natriuretic peptide in the freshwater turtle Pseudemys scripta
Attempts to purify further the active component using reversed-phase HPLC techniques and the radio-receptor assay resulted in the isolation and sequencing of two ANP receptor-binding peptides. These peptides were not homologous to ANP but rather were homologous to the muscle protein fragments …
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The Reproductive Biology of the Rio Grande Cooter (Pseudemys gorzugi) in Texas
No abstract prepared.
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Reproduction and Diet of Pseudemys Concinna Inhabiting a Cold Water Reservoir in Southwest Missouri
River cooters, Pseudemys concinna, were colleced using fyke nets from two locations, one hypothermic cove (Rockaway Slough) and one normothermic cove (Bull Creek) at Lake Taneycomo, from April 1993 to August 1994. Quantitative and qualitative analyses of adult diets from both sites showed great …
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Passive Electrical Properties of Horizontal Cells in the Retina of the Turtle, Pseudemys Scripta Elegans
A core conductor analysis was applied to the passive relaxation of the transmembrane potential in response to 20 ms pulses of current in luminosity-type and chromaticity-type horizontal cells. The time course of the relaxation was described by the sum of two exponentially decaying processes. The …
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Population and habitat ecology of the river cooter (Pseudemys concinna) in the New River Gorge National River, W.V.
… and habitat relationships of river cooters (Pseudemys concinna) in the New River Gorge National River (NRGNR), West Virginia. Cooter colonies occurred in 3 pool habitats characterized by slow current velocities (x=0.22m/s), shallow water (0-2m), aquatic macrophyte beds, and basking sites. The …
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Invertebrate Fauna of the Carapaces of the Texas River Cooter (Pseudemys texana) and the Red-Eared Slider (Trachemys scripta elegans)
… of freshwater turtles, the Texas river cooter (Pseudemys texana) and the Redeared slider (Trachemys scripta elegans) at Spring Lake, Hays County, Texas. Turtles were captured from August through November 2002 using hoop nets, basking traps, and dip nets. Invertebrate samples were obtained by …
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The mechanism and function of transient pressure fluctuations occurring in the lungs during diving in the turtle, Trachemys (=Pseudemys); scripta elegans
Recurring, brief fluctuations in lung pressure, refered to as Lung Pressure Transiets (LPTs), lasting approximately 5-6 seconds and with an amplitude of +0.25-2.0 mmHg were measured in nearly 30% of all voluntary dives in the aquatic turtle, Trachemys scripta elegans. LPTs were studied to determine …
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Effects of Senescence on Vascular Smooth Muscle in the Yellow Mud Turtle "Kinosternon flavescens" (Family "Kinosternidae")
… produced by acetylcholine, a feature typical of "Pseudemys scripta" and not of mammals. Isoproterenol did not produce contractions suggesting "K. flavescens" lack beta-2 receptors or these receptors do not operate similarly to mammals. The lack of decrease in arterial responsiveness in senescent …
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Fast reconstruction of motion from multielectrode records of retinal ganglion cells
… die aus der isolierten Retina der Schildkröte Pseudemys scripta elegans gewonnen wurden. Die Retina wurde hierbei durch ein bewegtes Lichtmuster stimuliert. Ein Ziel der Arbeit war es zu prüfen, ob eine Subpopulation systematisch ausgewählter Zellen einer zufällig ausgewählten signifikant …
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Seed Dispersal by Aquatic Turtles
… (Sternotherus odoratus), river cooters (Pseudemys concinna), spiny soft-shell turtles (Apalone spinifera), and common map turtles (Graptemys geographica) were sampled. Seeds of Agropyron repens, Carex spp., Ludwigia peploides, Polygonum spp., Panicum spp., Ranunculus sceleratus, Setaria …
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The Effects of Commercial Harvest on the Density and Demography of Aquatic Turtles in Arkansas
… (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 temminckii; N = 2). We found that harvest severely …