Search for dissertations about: "costs of immune response"
Showing result 1 - 5 of 11 swedish dissertations containing the words costs of immune response.
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1. Physiological trade-offs in reproduction and condition dependence of a secondary sexual trait
Abstract : This thesis examines parental condition, how it is traded off against reproduction and how it is displayed in a secondary sexual trait. The studies were performed on nest-box breeding collared flycatchers Ficedula albicollis on the island of Gotland, in the Baltic Sea. READ MORE
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2. Costs and benefits of immune system activation on physiology, behavior and offspring phenotype from an immunoecological perspective
Abstract : Pathogen challenges and host immune defenses can have substantial impact on life history patterns of animals. Biotic and abiotic factors may affect immunity in wild animals, influencing e.g., population dynamics and sexual selection. READ MORE
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3. Mechanisms and Biological Costs of Bacterial Resistance to Antimicrobial Peptides
Abstract : The global increasing problem of antibiotic resistance necessarily drives the pursuit and discovery of new antimicrobial agents. Antimicrobial peptides (AMPs) initially seemed like promising new drug candidates. Already members of the innate immune system, it was assumed that they would be bioactive and non-toxic. READ MORE
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4. Costs in the ecology and evolution of the vertebrate immune system
Abstract : A central assumption of theories of the ecology and evolution of immunological defence is that defence has not only benefits (in the form of resistance against parasites), but also costs. The aim of my studies was to investigate the nature and magnitude of costs of the vertebrate immune system, and to examine some of the consequences of these costs. READ MORE
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5. Defence on Demand : A physiological perspective on phenotypic plasticity in anti-predator traits
Abstract : Almost all species face some degree of predation risk, and, hence, evolution has produced a plethora of anti-predator defences. However, anti-predator strategies require resources, and the prevailing risk of becoming prey is influenced by many factors and rarely constant across time and space. READ MORE