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 5 of 5 for “"Stingrays"”.
-
Estimating Taxonomic Diversity Using Centrum Growth Profiles and Stinger Morphology of 36 Million Year Old Stingrays From North Dakota
<p>Stingrays are a diverse and popular group of vertebrates; however, nothing is known about the relationships between growth biology and climate change. Freshwater stingrays once inhabit the United States and Canada during very warm times in the geologic record. No stingray material has been …
-
Locomotor biomechanics and behaviour in the ocellate river stingray
Stingrays are fishes that are dorsoventrally flattened in the same plane as the substrate, similar to a hydrofoil, with long thin tails that have an absent or reduced caudal fin, and anterior to the pelvic girdle the longitudinal body axis is relatively rigid. These characteristics would appear to …
-
The Hydrodynamics and Energetics of Bioinspired Swimming with Undulatory Electromechanical Fins
… due to the maneuverability and versatility of stingrays. The stingray fin was modeled in 2D as a sinusoidal wave with an amplitude increasing from zero at the leading edge to a maximum at the trailing edge. Using this model, a parametric study was performed to examine the effects of the fin on …
-
DNA+eDNA: integration of traditional and emerging tools for monitoring marine ecosystems
… exposed taxonomic ambiguities in Mediterranean stingrays, advocating for further research and conservation actions. Further chapters present case studies on the first record, genetic structure and population connectivity of rare and endangered skates along the Sardinian coast. Applying …
-
The Lecanicephalidean Fauna of the Stingray Genus Pastinachus (Myliobatiformes: Dasyatidae)
The lecanicephalidean fauna of the cowtail ray genus Pastinachus is relatively unknown. Despite the description of over 30 nominal lecanicephalidean species parasitizing Pastinachus, only six lecanicephalidean species known to parasitize Pastinachus are currently considered valid. The contents of …