Response of Microtus pennsylvanicus to multiple-capture traps

Abstract

Microtus pennsylvanicus was livetrapped on demographic grids in Ontario and Manitoba to determine the efficiency of Longworth and one-way door multiple-capture traps. In paired-choice field trials, multiple-capture traps caught far fewer voles than did Longworth traps. Sand-tracking and a flagging system indicated that voles rarely lifted the one-way door of the multiple-capture trap, although they often approached the traps and began to enter the one-way door.