Behavioral and Physiological Responses of Ozark Zigzag Salamanders to Stimuli from an Invasive Predator: The Armadillo

Figure 2

Apparatus used for testing oxygen consumption by salamanders exposed to substrate cues in Experiment 3 (diagram modified from Windel 2005). Air from a cylindrical chamber holding a salamander was pumped by the flow meter through an oxygen analyzer to measure oxygen consumption during a sealed-chamber period of 12 min. Dark arrows indicate direction of flow.