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首页> 外文期刊>Ecological research >A test of the effect of testosterone on a sexually selected carotenoid trait in a cardueline finch
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A test of the effect of testosterone on a sexually selected carotenoid trait in a cardueline finch

机译：测试睾丸激素对雀科雀科性选择类胡萝卜素性状的影响

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摘要

A great number of secondary sexual traits are assumed to have evolved as honest signals of individual quality. It is known that androgens regulate many male secondary traits as well as reproductive behavior. The expression of melanin-based coloration is modulated by androgens, particularly testosterone, and there is some evidence that carotenoid-based coloration may also be under androgen control. In the European serin, Serinus serinus, male carotenoid-based plumage coloration is a sexually selected trait, subjected to female choice. In this experiment, we investigated if testosterone influences the expression of this trait by manipulating testosterone levels during molt and assessing how it affected plumage color expression after molt. We found that testosterone had only a negative effect on the size of the yellow ornament. Our experiment shows that testosterone had a limited effect on carotenoid-based coloration of a cardueline finch.
机译：大量的次要性特征被假定为个体素质的诚实信号。已知雄激素调节许多男性次生性状以及生殖行为。基于黑色素的着色的表达受雄激素特别是睾丸激素的调节，并且有一些证据表明基于类胡萝卜素的着色也可能受雄激素控制。在欧洲的Serinus serinus中，基于类胡萝卜素的雄性羽毛着色是一种性选择的特征，受女性选择。在这个实验中，我们研究了睾丸激素是否通过改变蜕皮过程中的睾丸激素水平来影响该性状的表达，并评估其如何影响蜕皮后羽毛颜色的表达。我们发现睾丸激素对黄色装饰物的尺寸仅具有负面影响。我们的实验表明，睾丸激素对基于胡萝卜素的雀科类胡萝卜素的着色作用有限。

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  • 来源
    《Ecological research》 |2015年第1期|25-31|共7页
  • 作者

    Sandra Trigo; Paulo Gama Mota;

  • 作者单位

    CIBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Porto, Portugal,Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal;

    CIBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Porto, Portugal,Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal;

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  • 正文语种 eng
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  • 关键词

    Testosterone; Carotenoid Ornamentation; European serin; Carotenoid-based coloration;

    机译：睾丸激素;类胡萝卜素装饰;欧洲丝氨酸;基于类胡萝卜素的着色;

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