Ultrasonic vocalizations as an index of social memory in female mice
Ultrasonic vocalization (UV) as a measure of social memory was investigated in female mice. UVs emitted by a resident female in the presence of a same-sex partner were measured during a 3-min, pretest social interaction. In a second 3-min test session, mice were reexposed to the familiar partner or presented with a novel partner. In […]
Ultrasonic calling in isolated infant prairie voles (Microtus ochrogaster) and montane voles (M. montanus)
I compared number of ultrasonic calls infant prairie voles (Microtus ochrogaster) and montane voles (M. montanus) emit when isolated. Typically, murid infants produce ultrasonic calls when they cannot thermoregulate adequately. Infant prairie voles called much more than did infant montane voles (average of 954 versus 17 calls/20 min at ages 0–10 days, P < 0.001) […]