Structural and physical evidence for an endocuticular gold reflector in the tortoise beetle, Charidotella ambita

Structural and physical evidence for an endocuticular gold reflector in the tortoise beetle, Charidotella ambita

Charidotella ambita offers a unique opportunity for unambiguously locating its gold reflector by comparing the structure of reflecting and non-reflecting cuticle of the elytron and pronotum. Using light microscopy and TEM, the reflector was located underneath the macrofiber endocuticle just above th...

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Veröffentlicht in:Ventricular Restraint Improves Outcomes in HF Patients with CRT. - 2011. - Amsterdam [u.a.]
1. Verfasser: Pasteels, Jacques M. (VerfasserIn)
Weitere Verfasser: Deparis, Olivier (BerichterstatterIn), Mouchet, Sébastien R. (BerichterstatterIn), Windsor, Donald M. (BerichterstatterIn), Billen, Johan (BerichterstatterIn)
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016transfer abstract
Zugriff auf das übergeordnete Werk:Ventricular Restraint Improves Outcomes in HF Patients with CRT
Schlagworte:Structural color Chrysomelidae Ultrastructure Elytra Gold reflector Tortoise beetle
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520 |a Charidotella ambita offers a unique opportunity for unambiguously locating its gold reflector by comparing the structure of reflecting and non-reflecting cuticle of the elytron and pronotum. Using light microscopy and TEM, the reflector was located underneath the macrofiber endocuticle just above the epidermis. The reflector is a multilayer comprising up to 50 bilayers alternating high and low density layers parallel to the surface of the cuticle. It is chirped, i.e., showing a progressive decrease in layer thickness from approximately 150 nm–100 nm across its depth. The high density layers in contact with the endocuticle fuse to the last macrofiber when the reflector is interrupted by a trabecula, demonstrating their cuticular nature. Simulated reflectance spectra from models of the multilayer matched the reflection spectra measured on the major gold patch of the elytron of living specimens. 
520 |a Charidotella ambita offers a unique opportunity for unambiguously locating its gold reflector by comparing the structure of reflecting and non-reflecting cuticle of the elytron and pronotum. Using light microscopy and TEM, the reflector was located underneath the macrofiber endocuticle just above the epidermis. The reflector is a multilayer comprising up to 50 bilayers alternating high and low density layers parallel to the surface of the cuticle. It is chirped, i.e., showing a progressive decrease in layer thickness from approximately 150 nm–100 nm across its depth. The high density layers in contact with the endocuticle fuse to the last macrofiber when the reflector is interrupted by a trabecula, demonstrating their cuticular nature. Simulated reflectance spectra from models of the multilayer matched the reflection spectra measured on the major gold patch of the elytron of living specimens. 
650 7 |a Structural color  |2 Elsevier 
650 7 |a Chrysomelidae  |2 Elsevier 
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650 7 |a Tortoise beetle  |2 Elsevier 
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700 1 |a Mouchet, Sébastien R.  |4 oth 
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