| 摘要 |
An acoustic signal for attracting rats comprising a playback recording or synthetic generation of vocalizations of rats or mice is provided. The vocalizations may be of rat pups, and may be characterized by sonic frequency components in the range of 1.8-7.5 kHz and/or ultrasonic frequency components in the ranges of 21-24 kHz, 40-50 kHz and/or 60-96 kHz. The vocalizations may be of adult male rats, including courting adult male rats, characterized by sonic frequency components in the range of 15-20 kHz and/or ultrasonic frequency components in the range of 20-100 kHz. The vocalizations may be of adult female mice, including nursing adult female mice, characterized by sonic frequency components in the range of 8-12 kHz and/or ultrasonic frequency components in the range of 25-100 kHz. |
