TY  - JOUR
PY  - 1995//
TI  - Testosterone and aggression in male red jungle fowl
JO  - Hormones and behavior
A1  - Johnsen, T. S.
A1  - Zuk, M.
SP  - 593
EP  - 598
VL  - 29
IS  - 4
N2  - We investigated the relationship between aggression, plasma testosterone level (T), and change in T in captive male red jungle fowl (Gallus gallus). T measured on day 1 of our experiment was positively correlated with T on day 8, suggesting that T remains constant in males when the social environment is stable. During aggressive encounters that escalated to include physical combat, males that attacked first (won) had increased T relative to their opponent. Males did not differ in T measured 1 week before the aggressive encounter. Our data suggest that an increase in T during aggression is associated with winning in escalated fights.<p /> <p>Language: en</p> 
LA  - en
SN  - 0018-506X
UR  - http://dx.doi.org/10.1006/hbeh.1995.1288
ID  - ref1
ER  -