Sökning: "genetic-structure"
Visar resultat 1 - 5 av 74 avhandlingar innehållade ordet genetic-structure.
1. Genetic structure of natural populations : aspects of the association between genetical and morphological variability patterns
Sammanfattning : Most species comprise a number of more or less reproductively isolated subpopulations. These subpopulations may exhibit striking differences in morphology and ecology, and on the basis of those differences they are often given the rank of subspecies, race, stock, variety, etc. LÄS MER
2. Genetic Disequilibria and the Interpretation of Population Genetic Structure in Daphnia
Sammanfattning : Understanding the processes that shape the spatial distribution of genetic variation within species is central to the evolutionary study of diversification and demography. Neutral genetic variation reflects past demographic events as well as current demographic characteristics of populations, and the correct interpretation of genetic data requires that the relative impact of these forces can be identified. LÄS MER
3. Fishing the gene pool : Genetic structure, admixture and behavioural complexity in fisheries management
Sammanfattning : Prudent management of marine fish resources relies on separation and management of biologically meaningful groups of conspecifics, termed fishery stocks, often depicted as self-sustaining, spatiotemporally separated and demographically independent entities. Such stock discrimination has however proven challenging. LÄS MER
4. Conservation biology and genetic structure of fringe populations of the scarce heath butterfly in Sweden
Sammanfattning : During the past century, about 82% of meadows and pastures have been lost in Sweden, with negative consequences for their flora and fauna. An example is the scarce heath butterfly, which is one of the red-listed species threatened by such habitat loss through afforestation. LÄS MER
5. Sperm Whales : Social Organization and Global Genetic Structure
Sammanfattning : The social organization of most mammals is characterised by female philopatry and male dispersal. This thesis examines the social organization of sperm whales, Physeter macrocephalus, using a combination of field observations and molecular genetic techniques. LÄS MER