Behavioural endocrinology: no hormonal response in tied fights
Androgens are the principal sex steroids controlling reproduction and aggression in male fish, but their production can also be affected by social interactions. Here we show that androgen concentrations are not significantly increased in cichlid fish (Oreochromis mossambicus) that are fighting their...
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| Veröffentlicht in: | Nature (London) 2005-09, Vol.437 (7056), p.207-208 |
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| creator | Oliveira, Rui F Carneiro, Luis A Canário, Adelino V M |
| description | Androgens are the principal sex steroids controlling reproduction and aggression in male fish, but their production can also be affected by social interactions. Here we show that androgen concentrations are not significantly increased in cichlid fish (Oreochromis mossambicus) that are fighting their own image in a mirror, despite their aggressive behaviour towards the virtual intruder. Our results indicate that the hormonal response normally triggered in male contests is not induced under these circumstances by the act of fighting itself, and that it may therefore depend on some indicator of relative fighting ability that cannot be delivered by a mirror-image challenger. |
| doi_str_mv | 10.1038/437207a |
| format | Article |
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| ispartof | Nature (London), 2005-09, Vol.437 (7056), p.207-208 |
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| language | eng |
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| source | MEDLINE; SpringerLink Journals; Nature |
| subjects | Aggression - physiology Aggressive behavior Animals Cichlids - physiology Cichlids - urine Competitive Behavior - physiology Glass Hierarchy, Social Male Oreochromis mossambicus Radioimmunoassay Social behavior Social Isolation Testosterone - analogs & derivatives Testosterone - metabolism Testosterone - urine |
| title | Behavioural endocrinology: no hormonal response in tied fights |
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