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Rajbongshi, Subhash Chandra
- Steady-State and Time-Resolved Bioluminescence of the Firefly Asymmetricata circumdata (Motschulsky)
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Authors
Angana Goswami
1,
Upamanyu Sharma
1,
Mana Mohan Rabha
1,
Subhash Chandra Rajbongshi
2,
Anurup Gohain Barua
1
Affiliations
1 Department of Physics, Gauhati University, Guwahati 781 014, IN
2 Department of Electronics and Communication Engineering, Institute of Science and Technology, Gauhati University, Guwahati 781 014, IN
1 Department of Physics, Gauhati University, Guwahati 781 014, IN
2 Department of Electronics and Communication Engineering, Institute of Science and Technology, Gauhati University, Guwahati 781 014, IN
Source
Current Science, Vol 109, No 10 (2015), Pagination: 1838-1842Abstract
After Luciola praeusta Kiesenwetter 1874, Asymmetricata circumdata (Motschulsky) is the second Indian species of firefly identified recently. Here we present steady-state and time-resolved measurements of bioluminescence emissions of male specimens of this new-found species. Steady-state spectra recorded in a high-resolution spectrometer show the peak wavelength at 570 nm, while the same on a colour film in a glass spectrograph show the peak at 579 nm between green and red bands, which prompts speculation that a sharp, laser-like line might exist in the emission spectrum of this species just as the one in L. praeusta. The diffraction pattern produced by a grating consolidates this proposition. Flashes recorded in an oscilloscope reveal the appearance of a small pulse in combination with the main one, which becomes prominent both at low and high temperatures.Keywords
Asymmetricata circumdata (Motsch.), Bimodal Flash, Emission Spectrum, Peak Wavelength.Full Text
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