Testosterone and testes size in mallards (Anas platyrhynchos)

被引：0
作者：
Angelika G. Denk
Bart Kempenaers
机构：
[1] Max Planck Institute for Ornithology,
来源：
Journal of Ornithology | 2006年 / 147卷
关键词：
Extra-pair paternity; Mallard; Testes size; Testosterone;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The steroid hormone testosterone (T) mediates the expression of many secondary sexual characters, including behaviors which influence male reproductive success. Testes are one of the major sources of androgens, in particular of T. Although a positive relationship between testes size and T levels could be hypothesized, it has rarely been tested intraspecifically. We investigated this link in mallards (Anas platyrhynchos) using a double-antibody radioimmuno-assay to measure hormone levels and X-rays to determine testes size. Here, we report a positive correlation between both traits in a group of 13 drakes during the reproductive season.
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页码：436 / 440
页数：4
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