林鼠的季节性攻击行为与季节性睾酮无关。
Seasonal aggression independent of seasonal testosterone in wood rats.
作者信息
Caldwell G S, Glickman S E, Smith E R
出版信息
Proc Natl Acad Sci U S A. 1984 Aug;81(16):5255-7. doi: 10.1073/pnas.81.16.5255.
Abstract
Levels of inter-male aggression, both in laboratory encounters and in the field, rise dramatically during the breeding season, closely paralleling the seasonal rise in testosterone. However, post-pubertally castrated males also show the dramatic seasonal rise in aggression in laboratory encounters with castrated opponents and show no decrement in fighting ability when paired with intact opponents, clearly demonstrating the independence of seasonal aggression from the proximate modulating effects of testosterone in wood rats.
摘要
在实验室环境和野外环境中，雄性间的攻击水平在繁殖季节会急剧上升，这与睾酮水平的季节性升高密切平行。然而，青春期后被阉割的雄性在与被阉割对手的实验室遭遇中也表现出攻击水平的急剧季节性上升，并且当与未阉割对手配对时，其战斗能力没有下降，这清楚地表明在林鼠中，季节性攻击与睾酮的近端调节作用无关。
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