Ultrasonic signaling in the gerbil (Meriones unguiculatus): Social interaction and olfaction

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Conducted 3 experiments with 53 gerbils to assess the conditions for ultrasonic emission. Exp I indicates that isolated Ss rarely emitted ultrasounds, males emitted at a higher rate than females, and emission rates ordinarily decreased with continual testing. Ultrasonic emissions were stimulated by olfactory cues from conspecifics. Exp II demonstrates that dominant males emitted more ultrasounds than subordinate males and responded to cues from anesthetized, shaved, or dead animals or from anesthetized animals in the dark. Exp III shows that body hair elicited ultrasounds from males unless organic materials were removed from the hair with chloroform. Hair was an effective stimulus at a distance only when an airstream blew the volatiles over the recipient. (31 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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