干旱区生态环境知识资源中心(Arid): Neon-green fluorescence in the desert gecko Pachydactylus rangei caused by iridophores

Arid

DOI	10.1038/s41598-020-79706-z
	Neon-green fluorescence in the desert gecko Pachydactylus rangei caused by iridophores
	Proetzel, David; Hess, Martin; Schwager, Martina; Glaw, Frank; Scherz, Mark D.
通讯作者	Protzel, D (corresponding author), Zool Staatssammlung Munchen ZSM SNSB, Munchhausenstr 21, D-81247 Munich, Germany.
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2021
卷号	11 期号:1
英文摘要	Biofluorescence is widespread in the natural world, but only recently discovered in terrestrial vertebrates. Here, we report on the discovery of iridophore-based, neon-green flourescence in the gecko Pachydactylus rangei, localised to the skin around the eyes and along the flanks. The maximum emission of the fluorescence is at a wavelength of 516 nm in the green spectrum (excitation maximum 465 nm, blue) with another, smaller peak at 430 nm. The fluorescent regions of the skin show large numbers of iridophores, which are lacking in the non-fluorescent parts. Two types of iridophores are recognized, fluorescent iridophores and basal, non-fluorescent iridophores, the latter of which might function as a mirror, amplifying the omnidirectional fluorescence. The strong intensity of the fluorescence (quantum yield of 12.5%) indicates this to be a highly effective mechanism, unique among tetrapods. Although the fluorescence is associated with iridophores, the spectra of emission and excitation as well as the small Stokes shifts argue against guanine crystals as its source, but rather a rigid pair of fluorophores. Further studies are necessary to identify their morphology and chemical structures. We hypothesise that this nocturnal gecko uses the neon-green fluorescence, excited by moonlight, for intraspecific signalling in its open desert habitat.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000627829300001
WOS关键词	BONE-BASED FLUORESCENCE ; NAMIB DESERT ; BIOFLUORESCENCE ; ULTRASTRUCTURE ; FOG ; UV
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351721
作者单位	[Proetzel, David; Glaw, Frank; Scherz, Mark D.] Zool Staatssammlung Munchen ZSM SNSB, Munchhausenstr 21, D-81247 Munich, Germany; [Hess, Martin] Ludwig Maximilians Univ Munchen, Dept Biol 2, Grosshaderner Str 2, D-82152 Planegg Martinsried, Germany; [Schwager, Martina] Munich Univ Appl Sci, Dept Appl Sci & Mechatron, Lothstr 34, D-80335 Munich, Germany
推荐引用方式 GB/T 7714	Proetzel, David,Hess, Martin,Schwager, Martina,et al. Neon-green fluorescence in the desert gecko Pachydactylus rangei caused by iridophores[J],2021,11(1).
APA	Proetzel, David,Hess, Martin,Schwager, Martina,Glaw, Frank,&Scherz, Mark D..(2021).Neon-green fluorescence in the desert gecko Pachydactylus rangei caused by iridophores.SCIENTIFIC REPORTS,11(1).
MLA	Proetzel, David,et al."Neon-green fluorescence in the desert gecko Pachydactylus rangei caused by iridophores".SCIENTIFIC REPORTS 11.1(2021).