Sökning: "coevolution"
Visar resultat 16 - 20 av 28 avhandlingar innehållade ordet coevolution.
16. Stochastic Models in Phylogenetic Comparative Methods: Analytical Properties and Parameter Estimation
Sammanfattning : Phylogenetic comparative methods are well established tools for using inter-species variation to analyse phenotypic evolution and adaptation. They are generally hampered, however, by predominantly univariate approaches and failure to include uncertainty and measurement error in the phylogeny as well as the measured traits. LÄS MER
17. Aposematism, Crypsis and Population Differentiation in the Strawberry Poison Frog
Sammanfattning : Evolutionary transitions between the two major predator avoidance strategies aposematism and crypsis are expected to be associated with changes in many important traits of animals. However, empirical studies on populations experiencing ongoing or recent transitions between these strategies are rare. LÄS MER
18. Plant Inducible Responses to Damage: Evolution and Ecological Implications
Sammanfattning : Abstract Inducible plant responses to damage, i.e. inducible defence responses and compensatory growth responses, are theoretically examined in an evolutionary and ecological context. Inducible defences are generally considered to be beneficial under conditions of low risk of herbivory and when initial damage is moderate. LÄS MER
19. Towards a sustainable automotive industry : experiences from the development of emission control systems
Sammanfattning : From the mid-1970s and on, the contribution to air pollution of carbon monoxide, hydrocarbons and nitrogen oxides from gasoline passenger cars in the developed world has been reduced through co-evolution of regulation and commercial introduction of catalytic emission control technology, now part of hundreds of millions of cars, trucks and buses worldwide. This dissertation is a disaggregated study of the global introduction of catalytic emission control technology as a measure to reduce local air pollution. LÄS MER
20. Ecology and evolution in a host-parasitoid system : Host search, immune responses and parasitoid virulence
Sammanfattning : In host-parasitoid systems, there is a continuous coevolutionary arms race where each species imposes a strong selection pressure on the other. The host needs to develop defence strategies in order to escape parasitism and the parasitoid must evolve counter-defence strategies in order to overcome the host’s immune defence and successfully reproduce. LÄS MER
