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 6 of 6 for “"Eutherian mammals"”.
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Changes in morphological disparity in eutherian mammals across the K-Pg boundary and Palaeocene-Eocene Thermal Maximum using discrete morphofunctional characters
The mammalian clade Eutheria comprises placental mammals (the dominant group of mammals today, with >6000 living species, ~93% of living diversity) plus their stem relatives. A major event in Earth history that had a profound influence on Eutheria was the Cretaceous–Paleogene (K–Pg) extinction …
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Initiation of Implantation and Decidualization in the Inbred Mouse.
… is sine qua non for uterine development in eutherian mammals, since these species shed microlecithal eggs. The stores of nutrients (i.e. yolk) are so scanty in such an egg that independent development beyond the earliest stages cannot be supported.
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Temperature-dependent alterations of brown adipose tissue metabolism during hibernation in the thirteen-lined ground squirrel, <i>Ictidomys tridecemlineatus</i>.
… (BAT) is the major thermogenic tissue in small eutherian mammals. In hibernators, seasonal modifications of BAT are well documented but little is known about its functional regulation during hibernation. BAT metabolism is activated by sympathetic stimulation, so I hypothesized that further …
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Mechanism and Evolutionary Origins of HIV-1 Virion Entrapment by Tetherin
… genes are located adjacent to each other in eutherian mammals and encode proteins with a shared and relatively unusual overall architecture. Phylogenetic analyses provided evidence that tetherin is ~147 MY old and that it has evolved under positive selection. Conversely, PV1 is ~400 MY old …
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Mammalian Postcranial Evolution and Primate Extinction in the Middle Eocene of North America
… groups like primates, but perhaps radiation of mammals that preferred more open habitats such as artiodactyls. In this dissertation I describe and analyze the postcranial morphology of Uintan mammals from the Uinta Formation in Utah to address which lineages evolved to take advantage of arid …
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Does variability matter? Major histocompatibility complex (MHC) variation and its associations to parasitism in natural small mammal populations
… MHC selection that were so far only known from eutherian mammals, birds, and fish: Positive selection on specific codon sites, recombination, and trans-species polymorphism. Beyond that, the two marsupial species revealed considerable differences in their MHC class II diversity. Diversity was …