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The competence of lymphoid organs during the course of experimental trichinellosis.Ulczak, Orysia Mary. January 1979 (has links)
No description available.
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Reproductive behaviour in the male rat: importance of 5-HT2 receptor activity and relation to 5-HT2-dependent serotonergic stereotypyWatson, Neil Verne 05 1900 (has links)
It is well established that the neurotransmitter
serotonin participates in the control of sexual behaviour in
the male rat. Recently, it has been found that serotonergic
activity may either inhibit or facilitate sexual behaviour,
depending on the subtypes of serotonin receptors involved.
However, the participation of 5-HT2 receptors in the control
of male rat copulation has received little experimental
attention, and the published data are equivocal.
In Experiments 1-4, it was established that the 5-
HT2/1C agonist DCI inhibits sexual behaviour in male rats;
this inhibition is effectively reversed by the antagonists
ritanserin, pirenperone, and ketanserin. Comparison of these
effects , with reference to the binding profiles of each
drug, provided strong evidence that 5-HT2/1C receptors
mediate an inhibitory influence on sexual behaviour in male
rats. In addition, a tentative claim may be made that the
effects of these drugs may be more attributable to 5-HT2
activity than 5-UT1C activity.
‘Wet dog shake’ behaviour in rats is known to be 5-HT2-
dependent. Experiments 5—7 evaluated the novel proposition
that the incidence of spontaneous wet dog shaking (WDS) by
male rats in mating tests may provide a behavioural assay of
concurrent 5—HT2 activity. WDS was found to be associated with copulatory inhibition in noncopulating males, compared
to normal copulators, and this relationship was specific to
mating situations. Activating 5-HT2/1C receptors with DOl
simultaneously induced WDS and inhibited copulation. Thus,
the incidence of spontaneous WDS in untreated males may
reflect the function of a 5—HT2—mediated neural mechanism
that tonically inhibits copulation in male rats. In
Experiment 8, DOl microinjection in the nucleus raphe
obscurus/inferior olivary complex also induced WDS and
inhibited copulation. This suggests that the hypothesized 5-
flT2-dependent inhibitory mechanism is vested in the
ventromedial brainstem. Recent anatomical findings support
this suggestion: cells in this region have bifurcating
axons, projecting collaterally to both the medial preoptic
area (implicated in sexual behaviour) and to the ventral
cervical spinal cord (implicated in WDS). Overall, the
results of the eight experiments provide strong evidence
that 5-HT2 receptors mediate some of the inhibitory effects
of serotonin on male rat sexual behaviour.
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Visualizing Geospatial Uncertainty in Marine Animal TracksMostafi, Maswood Hasan 12 April 2011 (has links)
Electronically collected animal movement data has been analyzed either statistically or visually using generic geographical information systems. The area of statistical analysis in this field has made progress over the last decade. However, visualizing the movement and behavior remains an open research problem. We have designed and implemented an interactive visualization system, MarineVis, to visualize geospatial uncertainty in the trajectories of marine animals. Using MarineVis, researchers are able to access, analyze and visualize marine animal data and oceanographic data with a variety of approaches. In this thesis, we discuss the MarineVis design structure, rendering techniques, and other visualization techniques which are used by existing software such as IDV to which we compare and contrast the visualization features of our system. Finally, directions of future work related to MarineVis are proposed which will inspire others to further study the challenging but
amazingly interesting and exciting research field of marine visualization. / Marine animal movement is a fundamental yet poorly understood process. One of the reasons is because our understanding of movement is affected by the measurement error during the observation and process noise. Differentiating real movement behavior from observation error in data remains difficult and challenging. Methods that acknowledge uncertainty in movement pathways when estimating constantly changing animal movement have been lacking until this time. However with the arrival of state-space models, this problem is partially solved as SSMs acknowledge this problem by allowing unobservable true states to be estimated from data observed with errors which arise from imprecise observations. State-space models use Markov Chain Monte Carlo methods which generate samples from a distribution by constructing a Markov Chain where the current state only depends on the immediately preceding state. The task of fitting SSMs to data is challenging and requires large computational effort and expertise in statistics. With the arrival of the WinBUGs software, this formidable task becomes relatively easy. Though using the WinBUGs software researchers try to visualize the tracks and behaviors, new problems appear. One of the problems is that when marine animals come back to certain places or animals' tracks cross each other several times, the tracks become cluttered and users are not able to understand the direction. Another problem of visualizing the confidence intervals generated using SSMs is that images generated using other systems are static in nature and therefore lack interactivity. Information becomes cluttered when too much data appear. Users are not able to differentiate tracks, confidence intervals or the information they would like to visualize. Acknowledging these, we have designed and implemented an interactive visualization system, MarineVis, where these problems are overcome. Using our system the confidence intervals generated using the SSMs, can be visualized more clearly and the direction of the turtle tracks can be understood easily. Our system does not occlude the underlying terrain as much because the glyphs are localized at the sample points rather than being spread out around the entire path. Our system encodes both direction and position rather than just position. Users can interactively limit the view of data points as a subset of available data points on a path, in clustered regions, to reduce congestion, and can animate the progression of the animal along its trajectory which is absent in existing approaches. All these results are visualized over NASA World Wind maps that facilitates the understanding of the tracks.
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Studies of a mate recognition gene and its product from the rotifer Brachionus plicatilisDingmann, Brian Joseph 12 1900 (has links)
No description available.
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An investigation of the role of uncertainty in the choice component of foraging in a captive group of chimpanzees (Pan troglodytes)Gust, Deborah Anne 08 1900 (has links)
No description available.
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Animal and dream functions in William of Palerne : with an introduction to medieval imagery and history of dream interpretation.Gill, Frances Margaret. January 1971 (has links)
No description available.
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The vocal behaviour of the Spring Peeper, Hyla crucifer/Rosen, Michael. January 1974 (has links)
No description available.
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Animals in the Fiction of John Irving and Haruki MurakamiWard, Peter Joseph January 2012 (has links)
This thesis examines animals in the fiction of John Irving and Haruki Murakami, two authors who have much in common, contemporaries whose work is both commercially successful and regarded as literary. Different in that Irving works within a traditional realist framework while Murakami delves into the magical, each includes animals in his fiction. They employ anthropomorphism and zoomorphism in a variety of ways and demonstrate how animals, as Claude Levi-Strauss puts it, are “good to think with”. I draw on the work of Erica Fudge in an overview of thinking with animals and examine the role of anthropomorphism and how it complements animal advocacy and liberationism in Irving’s Setting Free the Bears. I compare and contrast anthropomorphism and zoomorphism in The Hotel New Hampshire. In doing this, I complicate and challenge Wendy Doniger’s assertion that “sexuality makes humans into animals; language makes animals into humans”. This also applies to Murakami’s animals, who have further roles including enabling engagement with a magical dimension. I argue that, as instantiated in both writers’ fiction, animals evoke thought effectively largely because they are, as John Berger puts it, “both like and unlike”, and as Fudge identifies, that the “paradox of like and not like…exists in our fascination with animals”. My argument is that it is this very paradox, that they are simultaneously both “them” and “us”, along with other factors, such as the diversity, versatility and the inherent ambiguity of animals, that renders them fascinating. Furthermore, Murakami’s magically real animals link conceptual realms that are conventionally separate and facilitate criticism and challenging of conventional human hegemonic structures while operating outside national and cultural boundaries. In summary, Irving’s and Murakami’s animals are good to think with for many reasons, not despite their enigmatic furry ambiguity, but largely because of it.
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Invertebrate animals in classical antiquityBeavis, I. C. January 1984 (has links)
No description available.
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Targeted transgenesis and the 186 site-specific recombination system / by Sharon Jane Harrison.Harrison, Sharon Jane January 1999 (has links)
Bibliography: leaves 120-138. / xi, 138, [41] leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Characterises the 186 coliphage site-specific integration reaction in vitro with the expectation that it could be used in mammalian systems to insert genes or modify existing ones, to provide an alternative method for the production of transgenic livestock species. The analyzed system is the temperate bacteriophage 186. The in-vitro requirements for 186 integrative site-specific recombination were investigated. In vivo investigations were conducted whereby active 186-intasomes were microinjected into fertilised mouse eggs containing genomic copies of 186-attB. The 186 system has not been shown to work in vivo. / Thesis (Ph.D.)--University of Adelaide, Dept. of Biochemistry 1999?
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