Sökning: "Anas platyrhynchos"
Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Anas platyrhynchos.
1. Eco-immunological studies of innate immunity in Mallards (Anas platyrhynchos)
Sammanfattning : This thesis comprises two sections, both of which explore eco-immunology of the innate immune system of mallards (Anas platyrhynchos). The innate immune system serves a pivotal role as the first line of defense against invading pathogens, and is comprised of physical and chemical barriers. LÄS MER
2. Large-scale releases of native species : the mallard as a predictive model system
Sammanfattning : Human alteration of natural systems, and its consequences are of great concern and the impact on global ecosystems is one of the biggest threats that biodiversity stands before. Translocations of invasive species, as well as intraspecific contingents with non-native genotypes, whether they are deliberate or unintentional, are one such alteration and its consequences are continuously being assessed. LÄS MER
3. Perspectives on urban wastewater as a source of microbial pollution
Sammanfattning : Wastewater treatment plants are important links for dissemination of intestinal bacteria into surface waters. In this study, twelve mallards were exposed to treated wastewater for a period of 55 days. Faecal samples were collected and analysed for Enterococcus spp. and C. LÄS MER
4. Perspectives on urban wastewater as a source of microbial pollution
Sammanfattning : Wastewater treatment plants are important links for dissemination of intestinal bacteria into surface waters. In this study, twelve mallards were exposed to treated wastewater for a period of 55 days. Faecal samples were collected and analysed for Enterococcus spp. and C. LÄS MER
5. Survival patterns and density-dependent processes in breeding mallards Anas platyrhynchos
Sammanfattning : Measuring and assessing vital rates such as births and deaths are prerequisites for understanding population dynamics. Vital rates may be affected by the density of individuals, even though the importance of density dependence on population dynamics has been debated for a long time. LÄS MER