Cryptic sexual dichromatism occurs across multiple types of plumage in the Green-backed Tit Parus monticolus

Christopher Hofmann*, Wen Sui Lo, Cheng Te Yao, Shou Hsien Li

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

6 引文 斯高帕斯(Scopus)

摘要

Several recent studies have found instances of cryptic sexual dichromatism within avian taxa. Although this dichromatism has been found in plumage produced through a variety of proximate mechanisms, little is known about how dichromatism varies across these types of plumage within a single species. We used a reflectance spectrometer to measure colour within the Green-backed Tit Parus monticolus, a species which displays multiple types of pigment and structural colours. We found significant differences in spectral measurements corresponding to hue, chroma, and brightness between male and female carotenoid, melanin, structural white, grey and structural blue plumage. The only plumage that did not appear to show sexual dichromatism was the olive plumage of the back. These findings suggest that the mechanism(s) producing cryptic dichromatism in the Green-backed Tit are non-specific and act across multiple types of plumage, rather than within a single type, such as carotenoid-based or structurally produced.

原文英語
頁(從 - 到)264-270
頁數7
期刊Ibis
149
發行號2
DOIs
出版狀態已發佈 - 2007 四月

ASJC Scopus subject areas

  • 生態學、進化論、行為學與系統學
  • 動物科學與動物學

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