A Continously Recording Flight Mill for Investigating the Effect of Volatile Substances on the Flight of Tethered Insects1

摘要: An apparatus was developed to test and record the effect of volatile substances on flight tethered insects. It consists a rotary mill within glass chamber through which there is continuous air flow, photocell-ratemeter-paper chart recording system. This system provides permanent quantitative speed duration shows immediate subtle changes in speed. The can be adapted for computer programming by digital voltmeter tape punch. Introduction sex pheromone (as female frass) into caused male Douglas-fir beetles, Dendroctonus pseudotsugae Hopkins, striped ambrosia Trypodendron lineatum (Olivier), cease abruptly. considered strong evidence arrestant pheromones flying scolytids. has promise as tool study host attractants