Glow worms turn on to a rhythm

"An Australian researcher has foudn that glow worms switch their prey-catching light on and off to a daily rhythm. Dr David Merritt of the University of Queensland reports his findings in the current issue of the journal Biological Rhythms. "A biological rhythm in the animal determines when they will turn on and when they will turn off," says Merritt. Glow worms, not to be confused with fire flies, are larvae of a particular type of fly that only lives in Australia and New Zealand. Special cells in the rear end of the animal produce light that is used to attract prey. The larvae use strings of silk, beaded with sticky drops of mucus, to snare their victims that are attracted to the light. (...)

Full article: ABC