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 25 for “"Marsupials"”.
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G-banding and chromosomal evolution in Australian marsupials / by R.H. Rofe
iv, 127 leaves : ill., photos, graphs ; 30 cm.
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Systematics, Biogeography, and Phylogeography of Thylamys Mouse Opossums, a Recent Radiation of Neotropical Marsupials
… mouse opossums, a genus of Neotropical marsupials from central and southern South America. Chapter 1 is part of a collaborative work with Robert Voss and Sharon Jansa (Chapter 1). In it, we resolve longstanding issues surrounding <italic>Thylamys</italic> taxonomy and nomenclature using …
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Mammalian limb morphology: the role of the crawl in determining marsupial limb integration, development, and evolution
Marsupials and eutherians, though closely related sister taxa, differ greatly in the variety of morphologies found within their groups. This inequality has largely been argued to be due to the reproductive differences. The crawl most marsupial neonates complete after birth has constrained the …
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Evolution of the diets of Australian Possums (Marsupialia: Phalangeriformes) from the Etadunna Formation in the Lake Eyre Basin, South Australia
… Australia holds Australia’s oldest known fossil marsupials representing both extant and extinct families in the Etadunna Formation, a formation that spans nearly two million years from 23.3 to 25 MA. During that two-million-year period, the terrestrial herbivorous marsupials present in the area …
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Dental Ecometrics as a Proxy of Paleoenvironment Reconstruction in the Miocene of South America
… well as ecomorphological measurements on living marsupials and rodents, to relate the diversity of small mammals, specifically the distributions of their dental topographies, to the climates in which they are found. The emphasis of this dissertation is to demonstrate the potential of …
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Possum magic : exploring colour vision in the common brushtail possum (Trichosurus vulpecula)
… and dichromatic colour vision in the Australian marsupials. Our knowledge about these colour vision systems is limited, with a number of discrepancies in the research. Methodology issues with some of the anatomical and behavioural studies may have falsely indicated trichromacy. It is also …
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Possum magic : exploring colour vision in the common brushtail possum (Trichosurus vulpecula)
… and dichromatic colour vision in the Australian marsupials. Our knowledge about these colour vision systems is limited, with a number of discrepancies in the research. Methodology issues with some of the anatomical and behavioural studies may have falsely indicated trichromacy. It is also …
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Retroviruses in the common brush-tailed possum (Trichosurus vulpecula)
… Thus, a cross-species transmission event - from marsupials to primates, from primates to marsupials, or from an unidentified source to both marsupials and primates - appears to have occurred. There are 15-20 copies of the TvERV-K element in the possum genome, as determined by Southern …
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The development of the marsupial shoulder girdle: A case study in Monodelphis domestica
During their embryogenesis, marsupials develop a unique structure, the shoulder arch, which provides the structural and muscle-attachment support necessary for the newborn’s crawl to the teat. One of the most pronounced and important aspects of the shoulder arch is an enlarged coracoid. After …
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Diversity, phylogeny and biostratigraphy of diprotodontoids (marsupialia: diprotodontidae, palorchestidae) from the Riversleigh world heritage area
… were large bodied, browsing herbivorous marsupials most closely related to, among living marsupials, wombats. Referred to two families, Diprotodontidae and Palorchestidae, diprotodontoids are geographically and temporally widespread vombatimorphian taxa in Australian and New Guinean …
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Pollen digestion in flower-feeding Scarabaeidae : protea beetles (Cetoniini) and monkey beetles (Hopliini)
… ingest the grains (bees, syrphid flies, rodents, marsupials, bats and birds) may use osmotic shock, pseudo-germination, exudation, microbial digestion or enzyme penetration to gain access to the protoplasmic contents. Further study is needed to define the details of these methods and whether they …
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Heterogeneidade espacial e variação temporal do microclima e seus efeitos sobre a ocorrência de três espécies de marsupiais na Mata Atlântica
… Models of habitat preference were found for the marsupials Didelphis aurita (generalist with good capacity of local maintenance) and Metachirus nudicaudatus (developed understory and lesser capacity of local maintenance), while Marmosops incanus presented correlation with the microclimate, …
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The evolutionary transition from reptiles to mammals: analyses of body size reduction and separation of middle ear elements from the jaw
… in the development of an extant mammal. Modern marsupials are born in an extremely premature state. In fact, at the time of birth they still exhibit a reptilian-style jaw joint between the articular and quadrate. Not until postnatally does the new jaw joint form and the original elements …
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The construction of a partial least squares biplot
… data showing the diversity of arboreal marsupials (possum) in the Montane ash forest. After these applications, it is proposed that the PLS biplot is a useful graphical tool for displaying results from the (univariate) Partial Least Squares-Generalized Linear Model (PLS-GLM) analysis of …
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Conservation genetics of Australian quolls
As carnivorous marsupials, quolls are keystone species crucial to ecosystem health. Although opportunistic and adaptable, anthropogenic disturbance has led to severe population declines. In response, captive breeding and translocation programs were implemented in an attempt to mitigate extinction …
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Gene duplication and alternative splicing play a role in modulating the functions of the ZNF286A transcription factor
… which is conserved in all eutherians and marsupials and provide evidence that this novel TF plays a role in regulation of mammalian neurogenesis. ZNF286 occurs as a unique gene in most species. However, we demonstrate evidence that a gene duplication event in very recent primate history …
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Contemporary Perspectives on the Development of Australia’s Animal Research Regulation
… I review research in psychology using Australian marsupials in the place of standard model organisms. The primary aim is to evaluate the nature of studies choosing to use marsupial species. I am interested in how animal model choice is influenced by different factors such as the research question, …
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