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Temperature dependence of the flash duration of the firefly Luciola praeusta
Upamanyu Sharma1, Angana Goswami, Mridusmita Phukan
1Department of Physics, Gauhati University, Guwahati-781014, India. agohainbarua@yahoo.com.
Abstract:
Firefly flashing has attracted the attention of both poets and scientists for over a century. Here we study the effect of temperature on the flash duration of the Indian species of the firefly Luciola praeusta Kiesenwetter 1874 (Coleoptera: Lampyridae: Luciolinae). Recording in vivo time-resolved spectra of specimens of this species of firefly over the temperature range 20 °C-40 °C, it is observed that the flash duration changes with the change in temperature, and the change is substantially linear. This finding implies that the speed of the enzyme-catalysed chemiluminescence reaction, which produces the light of the firefly, varies linearly with temperature.
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