期刊
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
卷 100, 期 3, 页码 585-596出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1095-8312.2010.01449.x
关键词
colour patterns; optics; structural colours; systematics
The light reflected from many scarab beetles is strongly circularly polarized, a phenomenon that may be unique in nature. Approximately 1500 genera and more than 19 000 species/subspecies of scarab beetles (Scarabaeoidea) in the collection of the Natural History Museum, London, were surveyed with circularly polarizing filters to assess how widespread this effect is and how it relates to colour patterns in the individuals concerned. Over 1100 measurements were made of the strength of the circular polarization, in some cases registering 97%. Circular polarization had been previously described from five subfamilies of Scarabaeidae and, in the present study, was found in three further subfamilies: Phaenomeridinae, Dynastinae and Euchirinae, as well as in the subfamily Ceratocanthinae of the family Hybosoridae, comprising the first records outside the Scarabaeidae. The results may have implications for the taxonomy of the group, for visual discrimination, and for the behaviour of the species themselves. (C) 2010 The Linnean Society of London, Biological Journal of the Linnean Society, 2010, 100, 585-596.
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