Sökning: "Tättingar"

Visar resultat 6 - 7 av 7 avhandlingar innehållade ordet Tättingar.

1. 6. Diversity of avian haemosporidian parasites : Host specificity, genetic structure and infection patterns

   Författare :Xi Huang; MEMEG; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Haemoproteus; Sequence capture; host specificity; quantitative PCR; phylogeny;

   Sammanfattning : Parasites live on or inside their hosts and usually cause fitness loss, sometimes even lead to outbreaks of emerging infectious disease. Understanding how a parasite can infect its hosts (i.e., host specificity of the parasite) is important to both basic studies on disease evolution and the whole ecosystem health. LÄS MER

3. 7. On the role of migration for the distribution of arctic birds - a circumpolar perspective

   Författare :Sara Henningsson; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bird migration; broad-scale distributions; geographic breeding range; geography of migration; non-breeding range; barriers to migration; Arctic birds; evolution of migration routes;

   Sammanfattning : Flexibility as well as constraints to the evolution of migration routes has the possibility of affecting large-scale patterns of geographical ranges of animals both by facilitating, but sometimes restricting, accessibility to and colonization of new regions. This dissertation concerns the broad-scale effects migration has on the distributional patterns of birds in the Arctic. LÄS MER