Testosterone in tropical birds: effects of environmental and social factors.
Previous investigations suggest that male tropical birds have lower plasma testosterone concentrations than northern latitude species. To test whether this generalization is valid, we analyzed all currently available plasma testosterone data of tropical birds. We focused on peak breeding testosterone levels using phylogenetic and conventional statistics. Explanatory variables considered were social mating system, type of territoriality, breeding season length, and altitude. On average, tropic...Expand abstract
- Publication status:
- Publisher copy:
- Copyright date:
If you are the owner of this record, you can report an update to it here: Report update to this record