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.
Results
Showing 1 to 20 of 67 for “"Animal populations"”.
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MODELING AND MINING ANTIMICROBIAL RESISTANCE IN HUMAN AND ANIMAL POPULATIONS
… and spread of resistant bacteria in human and animal populations. Resistant bacteria and resistance genes spread between individuals through direct and indirect pathways, such that antimicrobial use in one population can result in increased morbidity and mortality from resistant bacteria in …
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Dispersal in small animal populations : a modeling approach to examine alternative hypotheses
Thesis (M.S.)--Michigan State University. Dept. of Fisheries and Wildlife,
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MULTIFACETED DRIVERS OF PERFORMANCE VARIATION IN ANIMAL POPULATIONS: INVASIVE PREDATOR, RESOURCE AVAILABILITY AND HYBRIDIZATION
… Phenotypic variation is a key process that allow populations to withstand environmental changes by increasing survival and fitness, and can be related to both adaptations and phenotypic plasticity. For this reason, studies on phenotypic variation, and its associated fitness, analysing response to …
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Mathematical modelling of emerging and re-emerging infectious diseases in human and animal populations
The works presented in this thesis are very different one from the other but they all deal with the mathematical modelling of emerging infectious diseases which, beyond being the leitmotiv of this thesis, is an important research area in the field of epidemiology and public health. A minor but …
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Assessing the impacts of human disturbance on wildlife: insights from wildfowl on the Exe Estuary.
… activity that elicits a response in an animal that would otherwise not occur under non-human related conditions. When this change in behaviour negatively impacts an animal’s energy budget it has the potential to reduce reproductive output and survival, and so ultimately, human …
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Data-Driven Modeling For Social-Ecological Resilience within a One Health Framework
… recognizes the interconnectedness of human, animal, and environmental health systems; the concept of social-ecological resilience (SER) incorporates the social, cultural, and political factors that can also impact how health systems respond and adapt to changes into this framework. This …
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Modelling environmental changes in the Udzungwa Mountains of Tanzania through impact assessment on rainforest mammals
The management and conservation of threatened animal populations require accurate knowledge on their distribution and abundance. At the same time, knowledge on the factors driving changes and fluctuation in distribution and abundance is also critical. Nevertheless, gaining such insight is …
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Information privée, attraction conspécifique et sélection d'habitat chez la paruline couronnée (seiurus aurocapilla)
… However, they can still have an influence on animal populations. In the ovenbird (Seiurus aurocapilla), this treatment often causes a reduction in population densities. Yet, the mechanisms behind this negative response are still poorly understood. As one of the species most sensitive to …
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Behavioural antecedents of altruism: a comparative analysis
… The establishment and maintenance of altruism in animal populations was examined in light of the dilemma presented by the classical genetic model for natural selection. A formula which will assist in the separation and delineation of the concept altruism from reciprocity and egoism was developed. …
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Diachonic DNA Analyses of Animal Breeds and Populations
Humans are dependent on the animals they raise and breed for food and secondary products. Archaeological and genetic investigations can provide critical insights into the history and development of these breeds and help understand human activities in the past. Furthermore, many well-adapted breeds …
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Chemogenomic approaches to drug design : docking-based virtual screening of nematode GPCRs for potential anthelmintic agents
… intellect. Helminths affects the well-being of animals as well including livestock and reduce the animal populations. However, the current anthelmintics are no longer as effective and some strains have developed resistance thus increasing the need for new anthelmintics. Unfortunately, not too …
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Climate Change Displacement and Global Governance: a Case Study of Three Intergovernmental Organizations and the Conflict Between the Member States and Bureaucracy
… and its effects are discussed in terms of animal populations and atmospheric events. However, its direct effect on human life is yet to garner such attention. A changing climate will affect how people are able to use their environment, if at all. Sea level rise and desertification will …
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Changes in Suid and Caprine Husbandry Practices Throughout Dynastic Egypt Using Linear Enamel Hypoplasia (LEH)
… husbandry practices of both ancient and modern animal populations. As there are no data that describe the prevalence of LEH in either ancient or modern Egyptian animal material, this thesis aims to establish the frequency of LEH in the archaeological remains of pigs and caprines (sheep and goat) …
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No One Wants To Be A Parasitologist: The Shrinking Field of America's Least Favorite Animals
… creatures that have evolved in and on every animal and ecosystem on the planet. Parasitism is the most successful way of life for an animal — representing more than 40% of all species — and the wormy and crawly creatures it encompasses are vastly understudied. An increasing volume of research …
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Characteristics of trappers in Maine, 1976 to 1980
… objectives of trappers were maintaining animal populations in proper balance with carrying capacity and maximizing pelt primeness. When presented with regulation options, respondents rated a species bag limit per trapper as the most acceptable option even though this regulation has been …
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An integrative approach to testing density effects in a migratory songbird, the Prothonotary Warbler (Protonotaria citrea)
Animal populations often fluctuate around local carrying capacity through density-dependent processes such as competition, predation, and disease. Once subject to debate, ecologists now recognize density dependence as a conceptual cornerstone of population biology. Yet despite >50 years of …
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Characterisation of porcine cytomegalovirus and development as a vaccine vector for classical swine fever virus
… disease found in domestic pigs and wild boar populations. Outbreaks have a large economic cost for the swine industry and cause significant morbidity and mortality in pigs. Only one compatible vaccine that allows the differentiation between infected and vaccinated animals (DIVA), Suvaxyn® CSF …
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Behavioural causes and consequences of sexual size dimorphism in an apex predator species.
Individual differences within populations in a range of phenotypic traits are hypothesised to have important ecological and evolutionary implications. Variation in individual growth rates that result in corresponding variations in body sizes, including size dimorphism, is a particularly widespread …
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Environmental factors influencing the breeding and health of a predator endemic to southern Africa: the endangered Black Harrier Circus Maurus
… and regulating factors driving changes in animal populations. This is particularly important for rare species as small population size increases extinction risk. Birds are amongst the most studied animals in this context. As a group that occupies a high trophic level, raptors are …
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Seed dispersal effectiveness of samango monkey (Cercopithecus albogularis schwarzi)
… forest or open habitats. Variation in SDE within animal populations can have important implications for spatial demographics in plant communities, and this thesis highlights the importance of including intergroup variability seed dispersal models.
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