Thesis (M.Sc. Biology)--University of Waikato, 2007. / Title from PDF cover (viewed March 19, 2008) Includes bibliographical references (p. 138-150)

Mammalian predators have been liberated on many islands to control pests but the desired results have rarely been achieved. The liberation of mongooses on islands in the Caribbean and Pacific is an excellent example of a liberation which had serious repercussions. These were liberated to control rats which caused serious damage in the sugar cane fields and although they reduced the numbers of rats, they also exterminated many species of small mammals and birds. Stoats, ferrets and weasels were liberated in New Zealand in the early 1880's to control rabbits. They appear to have had little effect on rabbit populations and stoats quickly spread into forest areas. It is not now possible to determine the effect these predators had on the native bird populations as the changes in fauna and habitat were complex. Unfortunately no studies of mustelids were made until 1948 when Wodzicki (1950) made a brief study as part of his survey of introduced mammals in New Zealand. The two periods of greatest change for mustelids have been during their spread throughout the country in the 1880's and in the early 1950's when rabbits were successfully controlled. There is little information on changes in density or feeding habits of mustelids during these times. Detailed investigation of the ecology of mustelids in New Zealand was begun by Dr W.H. Marshall, Fulbright Research Scholar from the University of Minnesota, with Animal Ecology Division, D.S.l.R. from September 1960 until June 1961. He examined their ecology in the light of his experience of mustelids in North America where conditions differ markedly from those in New Zealand. I joined Animal Ecology Division in November 1960 to assist Dr. Marshall throughout the remainder of his study, and continued the work after his return to the United States. The ecology of stoats, ferrets and weasels has been investigated in terms of their adaptation to food supplies which differ markedly from those in their native range in the Northern Hemisphere.

No description available.

Mammalian predators have been liberated on many islands to control pests but the desired results have rarely been achieved. The liberation of mongooses on islands in the Caribbean and Pacific is an excellent example of a liberation which had serious repercussions. These were liberated to control rats which caused serious damage in the sugar cane fields and although they reduced the numbers of rats, they also exterminated many species of small mammals and birds. Stoats, ferrets and weasels were liberated in New Zealand in the early 1880's to control rabbits. They appear to have had little effect on rabbit populations and stoats quickly spread into forest areas. It is not now possible to determine the effect these predators had on the native bird populations as the changes in fauna and habitat were complex. Unfortunately no studies of mustelids were made until 1948 when Wodzicki (1950) made a brief study as part of his survey of introduced mammals in New Zealand. The two periods of greatest change for mustelids have been during their spread throughout the country in the 1880's and in the early 1950's when rabbits were successfully controlled. There is little information on changes in density or feeding habits of mustelids during these times. Detailed investigation of the ecology of mustelids in New Zealand was begun by Dr W.H. Marshall, Fulbright Research Scholar from the University of Minnesota, with Animal Ecology Division, D.S.l.R. from September 1960 until June 1961. He examined their ecology in the light of his experience of mustelids in North America where conditions differ markedly from those in New Zealand. I joined Animal Ecology Division in November 1960 to assist Dr. Marshall throughout the remainder of his study, and continued the work after his return to the United States. The ecology of stoats, ferrets and weasels has been investigated in terms of their adaptation to food supplies which differ markedly from those in their native range in the Northern Hemisphere.

Thesis (M.S.)--University of Wyoming, 2008. / Title from PDF title page (viewed on June 28, 2009). Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1953. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 36-38).

The study of brain dynamics has traditionally focused study on well-established cortico-cortical, thalamo-cortical, and hippocampo-cortical pathways in the brain, neglecting other brain structures. The superior colliculus (SC) is a highly conserved midbrain structure that displays vast intrinsic, local and global patterns of anatomical connectivity, and therefore presents itself as an interesting alternative structure to study the fundamental principles of neural dynamics. Here, we report for the first time the analysis of both stimulus evoked and spontaneously generated SC neural dynamics across three spatial scales: dynamics intrinsic to the SC, local dynamical interaction with the neighboring inferior colliculus (IC), and large-scale dynamical interaction with the cortex. Within the SC, visual evoked neural dynamics was best characterized by the presence of temporally precise gamma oscillations in retinorecipient superficial SC layers following flash and grating stimuli. Local interareal dynamics in the midbrain were defined by the presence of subthreshold visually evoked activity in the IC that was driven by visual inputs from the SC. Finally, spontaneously generated SC activity is strongly governed by the state of cortical networks, with SC activity locked to prominent slow cortical and spindle oscillations. Collectively, this work provides evidence that nature of neural activity in the SC is strongly governed by both bottom-up sensory and top-down cortical inputs.

Thesis (M.S.)--University of Wisconsin--Stevens Point, 2007. / Includes bibliographical references (leaves 42-47).

Thesis (Ph. D.)--Carleton University, 1988. / Also available in electronic format on the Internet.

Thesis (M.S.)--University of Missouri-Columbia, 2007. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on October 29, 2007) Includes bibliographical references.