其他摘要：Social behavior of adult female Southern Sea Lions, Otaria byronia, was Itudied at Punta Norte (Argentina), during the 1982-85 breeding seuon. Qualitative and quantitative descriptions of female-female and female-pup aggressive encounters, of male intervention on those encounten, of copulatory behavior, and of female harding by males. were carried out. Aggressions among females increased directly with deliveries and number of pups per reproductive group. Resident females showed more aggression toward females coming from the sea than toward other resident females. Tbese results support the hypothesis that female aggressive behavior contributes to its pups survival. Satellíte males take over females which are coming from the sea, and although this behavior occassionaly leads to copulation, it could probably be interpreted as an alternative reproductive strategy
关键词：social behavior; Sea Lions; animal interaction; reproduction time
