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.
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Showing 1 to 20 of 623 for “"vertebrates"”.
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Morphogenesis and Female Fate Determination in Vertebrates
… to be required for female fate determination in vertebrates, the intricacies of ovarian morphogenesis are not well understood. A key event in ovarian development occurs around birth, when meiotic germ cells and somatic granulosa cells organize into primordial follicles, the structures that …
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Qualitative molecular markers for evolutionary analyses in vertebrates
Contains fulltext : 19111_qualmomaf.pdf (Publisher’s version ) (Open Access)
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Tests of Functional Equivalence Among Aquatic Predatory Vertebrates
… of functional equivalence of aquatic predatory vertebrates. I specifically focused on the response of larval anurans to (i) variation in the identity of predator species, (ii) variation in trait characteristics possessed by predators and (iii) variation in the total biomass and density of …
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Genomic Exploration of Transcriptional Regulation and Evolution in Vertebrates
… morphology and physiology in the evolution of vertebrates, which share a similar body plan and complement of genes. Correspondingly, recent studies have highlighted the plasticity of cis-regulatory architecture organization over evolutionary time, finding associations with examples of both …
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Late Cainozoic rainforest vertebrates from Australopapua: evolution, biogeography and extinction
Understanding the evolution, biogeography and extinction of Australopapuan vertebrate lineages is fundamental to determining baseline responses of those groups to past environmental change. In light of predicted climatic change and anthropogenic impact, it is imperative to determine the …
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Identification of Receptor Transporting Proteins As Conserved Antiviral Effectors in Vertebrates
Viruses and their hosts are engaged in "genetic arms races" in which each side attempts to gain the advantage over evolutionary time. Results of these conflicts are wide-ranging: viruses diversify, hosts establish species-specific barriers to some viruses while remaining susceptible to others, and …
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A Multimedia Atlas of Dissection for Comparative Anatomy of the Vertebrates
… laboratory course for Comparative Anatomy of the Vertebrates could be improved by applying current computer technology to construct an interactive, multimedial atlas of dissection. Five specimens used in comparative anatomy courses at most institutions were chosen as representative members of the …
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The Barrier Properties of the Skin of Aquatic and Semi-Aquatic Vertebrates
… but little is known about skin TJ proteins of vertebrates residing permanently or semi-permanently in water. This thesis provides new insights into the effect of abiotic and biotic factors on skin of fishes and amphibians using rainbow trout and the Australian green tree frog as models. The …
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Isolation And Characterisation Of Immunoglobulin Gene Superfamily Molecules From Lower Vertebrates (Fish)
Acquired immunity in vertebrates is a major mechanism of the immune system, which enables the vertebrates to discriminate self and non-self The most important feature of acquired immunity is the major histocompatibility complex (MHC) restricted-cellular immune response. This involves several …
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Results of feeding thyroid glands of various types of vertebrates to tadpoles
Dissertation (Ph.D.)--University of Kansas, Zoology, 1923.
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The evolution and function of pharyngeal arch signalling centres in jawed vertebrates
… arches and the pharyngeal skeleton across jawed vertebrates.
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Ecological Impact of Epigeal Termitaria on Vertebrates in the Tsavo Region of Southeast Kenya
… nature. I investigated their impact on vertebrates in the Tsavo region of Kenya. Through the characterization of mounds, trapping, direct observation, and collecting microclimate data, I was able to determine the importance of mounds to vertebrates. I found uniform dispersion of mounds, …
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The evolution of somitogenesis: Mechanisms of paraxial mesoderm elongation in zebrafish and other vertebrates
In vertebrate embryos, a process called somitogenesis lays the foundations of the adult spine. This process involves elongation and segmentation of the paraxial mesoderm to form somites. Although the segmentation aspect of this has been widely studied, the elongation aspect is not well understood. …
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Faunal turnover between east and southern African terrestrial vertebrates: is Malawi the geographical break?
The study centred on the investigation of phylogeographic structure within three forest associated bird species and two small mammal species, as well as two woodland associated bird species distributed across the Malawi Rift of Africa. The key objective was to investigate the extent to which …
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Repulsive axonal pathfinding requires the Ena/VASP family of actin regulatory proteins in vertebrates
… and EVL. As has been reported previously in invertebrates, these defects share phenotypic overlap with those seen in mice genetically deficient for the repulsive guidance molecules Slit and Robo. I find that the pathfinding errors observed in Ena/VASP deficient mice are likely a result of …
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Quantifying variation in teeth of Late Triassic vertebrates: implications for identification, palaeoecology, and biostratigraphy
… of remains are <50mm) as these record both small vertebrates and small parts of larger organisms. Tooth fossils are among the most readily preserved in these sites thanks to their relative hardness and resistance to chemical and physical weathering. However, when teeth are found isolated, it can …
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