Sökning: "Gary Bortolotti"

Hittade 1 avhandling innehållade orden Gary Bortolotti.

1. 1. Brood sex ratio and sex differences in Tengmalm’s owl : (Aegolius funereus)

   Författare :Tim Hipkiss; Gary Bortolotti; Umeå universitet; []
   Nyckelord :Aegolius funereus; avian CHD1 genes; brood sex ratio; differential mortality; nomadism; northern Sweden; sexual size dimorphism; sibling rivalry; supplementary feeding; vole cycles; zooekologi; Animal Ecology;

   Sammanfattning : Males and females differ in morphology and behaviour, so that selection acts differently on the two sexes. This changes the relative reproductive success of males and females, and it is beneficial for parents to bias the sex ratio of their broods in favour of the sex with the best survival and breeding prospects. LÄS MER