No hormonal response in tied fights
Article Abstract:
A study on androgen concentrations fighting their own image in a mirror besides their aggressive behaviour towards a virtual intruder is presented. Results indicate that the hormonal reaction normally found in male contests is not caused under these circumstances by the act of fighting itself and hence it depends on the sole factor of relative fighting ability that cannot be delivered by a mirror image challenger.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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Rank-related maternal effects of androgens on behaviour in wild spotted hyaenas
Article Abstract:
The androgen concentrations in wild female spotted hyaenas are higher during late gestation in dominant females than in subordinate females. Male and female cubs born to mothers with high concentrations of androgens in late pregnancy exhibit higher rates of aggression and mounting behaviour than cubs born to mothers with lower androgen concentrations.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Watching fights raises fish hormone levels
Article Abstract:
Research is presented concerning the increased levels of testosterone in the bodies of male cichlid fishes who have been spectators at a fight for male dominance. The social interactions of the fishes are discussed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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