Sökning: "plumage colour"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden plumage colour.
1. Plumage Colours and the Eye of the Beholder : The Ecology of Colour and its Perception in Birds
Sammanfattning : Virtually all diurnal birds have tetrachomatic vision based on four different colour receptors. As a result, birds are potentially able to perceive their environment in twice as many colours as humans and four times as many colours compared to most other mammals, which are dichromatic. LÄS MER
2. Genomics and Transcriptomics of Behaviour and Plumage Colouration
Sammanfattning : The aim throughout this thesis has been to investigate the underlying genetics of behaviours and feather colour and plumage patterns by using chickens as a model organism. Chickens are extremely important as a food source, both in terms of egg, as well as meat production. LÄS MER
3. Mapping Genes Affecting Phenotypic Traits in Chicken
Sammanfattning : The purpose of gene mapping is to understand the underlying genetics of simple and complex traits like plumage colour and growth. This thesis is based on a cross between the wild ancestor of the modern chicken, the red junglefowl, and a White Leghorn line selected for high egg mass. LÄS MER
4. Bird Vision: Spatial acuity and colour discrimination in bright and dim light
Sammanfattning : Birds use vision to guide navigation, foraging and mate choice, and studies of the limitations in bird visual perception are most helpful for the understanding of bird ecology. Here, I present four studies of bird vision in bright and dim light. LÄS MER
5. Accessing Genetic Variation by Microarray Technology
Sammanfattning : Microarray technology is a promising approach for the simultaneous analysis of multiple single nucleotide polymorphisms (SNPs), which are the most abundant form of genetic variation. In this thesis enzyme-assisted microarray-based methods were developed to improve the accuracy and genotype discrimination power of the current methods for SNP genotyping. LÄS MER