Sökning: "Cyanistes caeruleus"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Cyanistes caeruleus.
1. Costs and benefits of immune system activation on physiology, behavior and offspring phenotype from an immunoecological perspective
Sammanfattning : 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. LÄS MER
2. The Problem of Partial Migration - the Case of the Blue Tit
Sammanfattning : In the evolution of bird migration, partial migration is assumed to be an important intermediate step between migration and residency. Partial migration is characterised by the existence of both migratory and resident individuals in a given population. LÄS MER
3. Causes and consequences of individual variation in energy turnover rates
Sammanfattning : Individual energy turnover rates can vary remarkably, even within a species. In this thesis I study the causes and consequences of this pronounced variation and show that individual energy turnover rates can be affected by a large number of factors. LÄS MER
4. Avian thermoregulation across age and seasons
Sammanfattning : Animals constantly need to relate to prevailing environmental conditions and regulate their body temperature accordingly. Body temperature regulation in birds and mammals is inherently linked to energy expenditure and, thus, thermoregulation is a physiological mechanism that could trade-off with other costly processes, with potential long-term fitness consequences. LÄS MER
5. The effects of temperature on avian physiology, behavior and development
Sammanfattning : Temperature is a property of profound matter in all aspects of animal life, affecting both individual energy budgets and the environments in which animals reside. Thus, a proper understanding of the effects of temperature variation is instrumental in understanding not only animal form and function, but also the structure and dynamics of wild populations. LÄS MER