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.
Results
Showing 1 to 6 of 6 for “"Nerodia sipedon"”.
-
Phenotypic Consequences of Gestation Temperature in the Northern Watersnake, Nerodia Sipedon
… produced by gravid Northern Watersnakes (Nerodia sipedon) maintained at constant temperatures of 23, 26, and 29°;C. Swimming speed, defensive strikes, and flight response were tested at 1 and 26 weeks of age, and growth was measured until 30 weeks of age. The number of ventral scale rows …
-
Habitat Choice and Spatial Ecology of Nerodia Sipedon, the Northern Water Snake
… the spatial ecology and habitat choice of Nerodia sipedon in a lentic ecosystem in southwestern Missouri. In late spring of 1998, radio transmitters were implanted into 18 adults, which were located daily. Home range areas and shifts in activity centers were calculated using several …
-
Growth Rate and Performance Effects on Watersnakes (Nerodia Sipedon) from Dietary Exposure to Heavy Metals
… performance measures in Northern Watersnakes, Nerodia sipedon when fed fish from a polluted mining-waste site or fish from non-contaminated sources. Fish collected from the mining-waste site contained significantly higher levels of As, Cd, Pb, and Zn than control fish. Over eight weeks, snakes …
-
Effects of Temperature on Foraging, Endurance, and Sprint Speed in Agkistrodon Piscivorus and Nerodia Sipedon
… semi-aquatic snakes, the Northern water snake (Nerodia sipedon) and Cottonmouth (Agkistrodon piscivorus). Dietary data for both species from a cold Ozarks stream habitat revealed that A. piscivorus does not consume aquatic prey at this site while N. sipedon is primarily piscivorous. I examined …
-
Hybridization Between the Watersnakes <i>Nerodia sipedon</i> and <i>Nerodia fasciata,</i> in the Carolinas: A Morphological and Molecular Approach
… characters to evaluate differences between <em>Nerodia sipedon</em> and <em>N. fasciata</em> and to study the dynamics across their hybrid zone in the Carolinas. Many of the morphological characters exhibited significant interspecific differences, although only the number of dorsally complete …
-
Characterizing the epidemiology of ophidiomycosis in North American snakes through field studies, modeling, pathogen genomic analysis, and treatment trials
… Georgia, USA and in Lake Erie watersnakes (Nerodia sipedon insularum, LEWS) in Ottawa and Erie Counties, Ohio, USA. Snakes were captured during visual encounter surveys and visually inspected for skin lesions suggestive of ophidiomycosis, then a body swab was collected to detect the presence …