...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Wilson Bulletin >DEVELOPMENTAL CHANGES IN SERUM ANDROGEN LEVELS OF EASTERN SCREECH-OWLS (MEGASCOPS ASIO)
【24h】

DEVELOPMENTAL CHANGES IN SERUM ANDROGEN LEVELS OF EASTERN SCREECH-OWLS (MEGASCOPS ASIO)

机译：东部矮人血清（MEGASCOPS ASIO）雄激素水平的发展变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We studied androgen production during development in nestling Eastern Screech-Owls (Megascops asio) and hypothesized that gender and hatch order might influence serum levels of testosterone and androstenedione. Testosterone levels were highest immediately after hatching and declined significantly in the 4 weeks leading to fledging. The average level of testosterone for 1-7 day-old owls was 3.99 ± 0.68 ng/ml. At 22-28 days of age, the average testosterone level for nestling owls was 0.83 ± 0.18 ng/ml. Testosterone levels did not differ between males or females. The average testosterone level for male nestlings was 2.23 ± 0.29 ng/ml and 2.39 ± 0.56 ng/ml for female nestlings. The average level of androstenedione for nestling owls was 1.92 ± 0.11 ng/ml and levels remained constant throughout development. Levels were significantly higher in males than females. The average androstenedione level was 1.77 ± 0.16 ng/ml for male nestlings and 1.05 ± 0.24 ng/ml for female nestlings. Hatching order did not affect levels of either androgen. Our results provide a foundation for future studies of androgen production by nestling owls.
机译：我们研究了雏鸟东部猫头鹰（Megascops asio）在发育过程中的雄激素生成，并假设性别和孵化顺序可能影响睾丸激素和雄烯二酮的血清水平。孵化后立即睾丸激素水平最高，并在4周内显着下降，导致出雏。 1-7天大的猫头鹰的平均睾丸激素水平为3.99±0.68 ng / ml。在22-28日龄时，雏鸟的平均睾丸激素水平为0.83±0.18 ng / ml。男性或女性的睾丸激素水平没有差异。雄性雏鸟的平均睾丸激素水平为2.23±0.29 ng / ml，雌性雏鸟的平均睾丸激素水平为2.39±0.56 ng / ml。雏鸟的雄烯二酮的平均水平为1.92±0.11 ng / ml，并且在整个发育过程中保持恒定。男性的水平明显高于女性。雄性雏鸟的平均雄烯二酮水平为1.77±0.16 ng / ml，雌性雏鸟的平均水平为1.05±0.24 ng / ml。孵化顺序不影响任何雄激素的水平。我们的研究结果为今后研究雏鸟产生雄激素提供了基础。

著录项

  • 来源
    《The Wilson Bulletin》 |2010年第4期|p.755-761|共7页
  • 作者

    CORINNE P. KOZLOWSKI; D. CALDWELL HAHN;

  • 作者单位

    St. Louis Zoo, Research Department, 1 Government Drive, St. Louis, MO 63110, USA,University of Missouri-St. Louis, Biology Department,8001 Natural Bridge Road, St. Louis, MO 63121, USA;

    USGS, Patuxent Wildlife Research Center, 12100 Beech Forest Road, Laurel, MD 20708, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号