Ultrasonic vocalizations by adult prairie voles,Microtus ochrogaster

Summary Male and femaleMicrotus ochrogaster were presented with anesthetized and awake conspecifics while ultrasonic vocalizations (USVs) were monitored. Males produced significantly more USVs than females during 5-min testing sessions. Males tended to produce more USVs to unfamiliar females than to familiar female siblings. Sexual experience led to increased USV scores by males. These results suggest that USVs by male prairie voles communicate to females the male's gender and his availability for reproductive behavior.     

Ultrasonic vocalizations by adult prairie voles, Microtus ochrogaster

Male and female Microtus ochrogaster were presented with anesthetized and awake conspecifics while ultrasonic vocalizations (USVs) were monitored. Males produced significantly more USVs than females during 5-min testing sessions. Males tended to produce more USVs to unfamiliar females than to familiar female siblings. Sexual experience led to increased USV scores by males. These results suggest that USVs by male prairie voles communicate to females the male's gender and his availability for reproductive behavior.     

Effect of albendazole on the metacestodes ofTaenia saginata in calves

Summary Albendazole, a benzimadazole-carbamate anthelmintic, has been shown to effectively cause destruction of the metacestodes ofTaenia saginata in calves.Supported by the Smith Kline Corporation, Philadelphia, Pennsylvania.The authors thank Cophelia Pertz for her technical assistance.     

Anthelmintic activity of albendazole against liver flukes,tapeworms, lung and gastrointestinal roundworms

Summary A new derivative, albendazole, of the benzimidazole group of anthelmintics which is active against nematode, cestode and trematode species, was found.