Global ETD Search
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Showing 1 to 15 of 15 for “"stingray"”.
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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 …
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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 …
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The Elasmobranch-Microbe Relationship: Trimethylamine n-oxide Synthesis, Urea Hydrolysis, and Microbe-Osmolyte Interactions in the Atlantic Stingray, <i>Dasyatis sabina</i>
… microbiota on osmoregulation in Atlantic stingray (<em>Dasyatis sabina</em>) <em>in vivo</em>. <em>D. sabina</em> were given daily broad-spectrum antibiotics <em>per os</em> and monitored for weight loss, plasma osmolality, amine metabolites, urea, and TMAO. qRT-PCR was used to determine …
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The processes for determining the risk factors involved with the morbidity and mortality of the Southern stingray, Dasyatis americana, at an aquarium
To view the abstract, please see the full text of the document.
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Design and control of a soft biomimetic batoid robot
… of the robot is based on the body of the common stingray, Dasyatidae, and is made of soft silicone polymers. Although soft batoid robots have been previously studied, the novelty brought by the present work centers around autonomy and scale, making it suitable for field operations. The design of …
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Detection, Activity Measurement and Phylogeny of Ureolytic Bacteria Isolated from Elasmobranch Tissue
… were cultured from free-ranging Atlantic stingray (<em>Dasyatis sabina</em>) and Atlantic sharpnose sharks (<em>Rhizoprionodon terraenovae</em>). 16S rRNA gene phylogeny indicated bacteria community structure in both elasmobranchs were under phylum Proteobacteria, Firmicutes and …
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The Hydrodynamics and Energetics of Bioinspired Swimming with Undulatory Electromechanical Fins
… to utilize the potential their methods offer. A stingray-like fin was chosen for analysis 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. …
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Astrometric and Photometric Data Fusion in Machine Learning-Based Characterization of Resident Space Objects
… is the design and implementation of the Stingray sensor system, which is comprised of 15 CMOS detectors fixed-staring at the Geosynchronous Earth Orbit (GEO) belt visible above Tucson, Arizona. The design and function of the system is described in detail, along with verification of …
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Probolitrema tomalis sp. nov. (Trematoda) from Dasyatis dipterura and Brachylaemus virginianus (Dickerson) (Trematoda) from Didelphys virginiana
… tomalis were obtained from the coelom of a stingray, Dasyatis dipterura, on July 2, 1933, from Tomales Bay, California. No observations concerning the living animal were recorded.</p>
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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 …
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Exploring the Glucocorticoid Actions of 1α-Hydroxycorticosterone (1α-OH-B) in the Elasmobranch Fishes
… physiological stress response of the Atlantic stingray (<em>Dasyatis sabina</em>) to air exposure, with particular regards to the roles of corticosteroids and metabolic fuels. Results demonstrate that corticosteroids increase in a corresponding manner to glucose, supporting a GC role for …
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Characterization of the Whale Shark (Rhincodon Typus) Melanocortin-2 Receptor
… shark (<em>Callorhinchus milii</em>) and the red stingray (<em>Dasyatis akajei</em>), revealed divergent traits in a less obligatory relationship on MRAP1 and its ability to be activated by ACTH or the MSH-sized peptides. However, observed traits were not consistent between these two cartilaginous …
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DNA+eDNA: integration of traditional and emerging tools for monitoring marine ecosystems
… markers we reported the first record of a rare stingray species in Sardinia. Additionally, we 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 …
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Perancangan sea world di kawasan Wisata Bahari lamongan: Tema biomorphic architecture
… of bio- morphic transformation is taking analogy stingray wing motion. Expected later to bring the characters Sea World are dynamic and attract visitors. The design of the building aims to increase the number of visitors decreasing Lamongan Marine Tourism.
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The ecology of ray species in an urbanised estuary: Seasonality, habitat use and pollutant exposure in Tauranga Harbour
Information about the movement, seasonality, and use of habitats by marine animals is vital for the mitigation of potential anthropogenic impacts. Ray species may be particularly at risk as they regularly inhabit coastal and estuarine waters. In New Zealand to-date, there has been scant research on …