Social environment affects testosterone level in captive male blue–black grassquits

The challenge hypothesis proposes that testosterone (T) elevation above what is needed for breeding is associated with social factors, and males possibly modulate their hormonal response to variations in population density and sex ratio. We investigated the role of social environment in altering tes...

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Bibliographic Details
Main Author: Lacava, Roberto V. (author)
Other Authors: Brasileiro, Luiza (author), Maia, Rafael (author), Oliveira, Rui Filipe (author), Macedo, Regina H. (author)
Format: article
Language:eng
Published: 2012
Subjects:
Aggressiveness
Challenge hypothesis
Group density
Sex ratio
Testosterone
Volatinia jacarina
Online Access:http://hdl.handle.net/10400.12/1246
Country:Portugal
Oai:oai:repositorio.ispa.pt:10400.12/1246

Internet

http://hdl.handle.net/10400.12/1246

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