Short-term exposure to testosterone propionate leads to rapid bill color and dominance changes in zebra finches
Short-term exposure to testosterone propionate leads to rapid bill color and dominance changes in zebra finches
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DOI：
10.1016/j.yhbeh.2010.04.004
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发表时间：
2010-08-01
影响因子：
3.5
通讯作者：
Gleicher, Michael J.
中科院分区：
文献类型：
--
作者：
Ardia, Daniel R.;Broughton, Deanna R.;Gleicher, Michael J.
T对雄雄竞争和择偶表现都有影响。在斑胸草雀中，雌性配偶的选择部分是基于喙的颜色，而喙的颜色已经被证明可以通过长期的睾丸激素补充来增强。然而，目前尚不清楚是否票据颜色在男性之间的互动中发挥作用，以及如何票据颜色响应T的短期变化。我们测试了单次注射丙酸睾酮（TP）是否会影响雄性-雄性优势互动，并导致快速（超过三天）的账单颜色变化。此外，我们还测试了比尔的颜色是否能预测侵略性和统治性。我们让鸟类在三合会建立层次结构，然后注射无论是占主导地位的或从属的个人与TP，除了建立假对照三合会。我们发现，红色的色度，而不是色调，预测男性的攻击性。暴露于TP导致优势和从属鸟类在三天内增加优势分数，比暴露于TP的时间长。
Testosterone (T) can influence both male-male competition and mate choice displays. In zebra finches, female mate choice is based in part on bill color, and bill color has been shown to be enhanced by long-term testosterone supplementation. However, it is not clear whether bill color plays a role in male-male interactions and how bill color responds to shorter-term changes in T. We tested whether a single injection of testosterone propionate (TP) would influence male-male dominance interactions and lead to rapid (over a three-day period) changes in bill color. In addition, we tested whether bill color predicted aggression and dominance. We allowed birds in triads to establish hierarchies and then injected either dominant or subordinate individuals with TP, in addition to establishing sham control triads. We found that red chroma, but not hue, predicted aggressiveness of males. Exposure to TP led both dominant and subordinate birds to increase dominance scores over three days, longer than the