Sexual dimorphism in melanin pigmentation, feather coloration and its heritability in the barn swallow (Hirundo rustica).
Sexual dimorphism in melanin pigmentation, feather coloration and its heritability in the barn swallow (Hirundo rustica).
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DOI：
10.1371/journal.pone.0058024
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Wakamatsu K
中科院分区：
文献类型：
--
作者：
Saino N;Romano M;Rubolini D;Teplitsky C;Ambrosini R;Caprioli M;Canova L;Wakamatsu K
黑色素是动物体色中的主要色素，色素组织中两种黑色素形式（嗜黑素和真黑色素）的浓度在不同群体和个体之间存在很大差异。基于黑色素的着色正受到越来越多的关注，特别是在社会性交流环境中，因为黑皮质素系统被假设为着色和健康特征之间的共变提供了机械基础。然而，除了少数明显的例外，关于黑色素沉着的个体间和群体间变异及其环境、遗传和个体发生成分的详细信息很少。在这里，我们研究了意大利雀形目燕子（Hirundo rustica rustica）种群中基于黑色素的着色、其与性别和年龄相关的变异以及遗传力。喉咙（棕色）和腹部（白色至棕色）羽毛中的真黑素和褐黑素浓度在性别之间存在差异，但与年龄无关。喉咙中黑色素（Pheo:Eu）的相对浓度在性别之间存在差异，但腹部羽毛中没有差异，并且与女性相比，雄性腹部的浓度高于喉咙羽毛中的浓度。羽毛区域内以及羽毛区域之间的黑色素浓度之间存在微弱的相关性。腹部羽毛的颜色是通过两种黑色素的浓度来预测的，而喉咙羽毛的颜色仅通过雌性褐黑素来预测。此外，Pheo:Eu 还预测了雌性喉咙羽毛的颜色和雄性腹部羽毛的颜色。最后，我们发现喉羽颜色具有很高的遗传性。研究发现黑化与来自苏格兰的 Hirundo rustica rustica 或 H. r. 记录的黑化不同。来自北美的红腹蜂。因此，目前的结果表明，色素沉着策略根据性别和羽毛区域以及地理种群的不同而以复杂的方式变化，这可能反映了对不同自然和性选择制度的适应，并且一些颜色成分似乎具有高度遗传性。
Melanin is the main pigment in animal coloration and considerable variation in the concentrations of the two melanin forms (pheo- and eumlanin) in pigmented tissues exists among populations and individuals. Melanin-based coloration is receiving increasing attention particularly in socio-sexual communication contexts because the melanocortin system has been hypothesized to provide a mechanistic basis for covariation between coloration and fitness traits. However, with few notable exceptions, little detailed information is available on inter-individual and inter-population variation in melanin pigmentation and on its environmental, genetic and ontogenetic components. Here, we investigate melanin-based coloration in an Italian population of a passerine bird, the barn swallow (Hirundo rustica rustica), its sex- and age-related variation, and heritability. The concentrations of eu- and pheomelanin in the throat (brown) and belly (white-to-brownish) feathers differed between sexes but not according to age. The relative concentration of either melanin (Pheo:Eu) differed between sexes in throat but not in belly feathers, and the concentrations in males compared to females were larger in belly than in throat feathers. There were weak correlations between the concentrations of melanins within as well as among plumage regions. Coloration of belly feathers was predicted by the concentration of both melanins whereas coloration of throat feathers was only predicted by pheomelanin in females. In addition, Pheo:Eu predicted coloration of throat feathers in females and that of belly feathers in males. Finally, we found high heritability of color of throat feathers. Melanization was found to differ from that recorded in Hirundo rustica rustica from Scotland or from H. r. erythrogaster from North America. Hence, present results show that pigmentation strategies vary in a complex manner according to sex and plumage region, and also among geographical populations, potentially reflecting adaptation to different natural and sexual selection regimes, and that some coloration components seem to be highly heritable.
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影响因子：
2.1
作者：
Antonov, A.;Stokke, B. G.;Shykoff, J. A.
通讯作者：
Shykoff, J. A.
DOI：
10.1111/j.1600-0749.1995.tb00658.x
发表时间：
1995-06-01
期刊：
PIGMENT CELL RESEARCH
影响因子：
--
作者：
HAASE, E;ITO, S;WAKAMATSU, K
通讯作者：
WAKAMATSU, K
影响因子：
3.1
作者：
Dor, Roi;Safran, Rebecca J.;Lovette, Irby J.
通讯作者：
Lovette, Irby J.
DOI：
10.1098/rspb.2000.1116
发表时间：
2000-06-07
影响因子：
4.7
作者：
Griffith, SC
通讯作者：
Griffith, SC
DOI：
10.1016/j.cbpa.2010.01.021
发表时间：
2010-06-01
影响因子：
2.3
作者：
Adachi, Kohsuke;Wakamatsu, Kazumasa;Kato, Keitaro
通讯作者：
Kato, Keitaro