天山盘羊秋季集群习性和日活动节律初步观察

Study on Herd Structure and Daytime Activity Rhythm of Argali( Ovis ammon karelini ) in Autumn of Tianshan

对野外观察记录的 76群 46 0余只盘羊在 9、 10、 11月份的集群和日活动数据进行统计分析 ,结果表明 :天山盘羊在发情前后从以独羊群、雄性群、雌性群和母子群为主的集群类型转变为以单一的混合群为主的集群类型。集群大小平均由发情前的 8 3± 4 6只变为发情后的 15 9± 11 1只 ,差异极其显著 (P =0 0 0 3 <0 0 1)。结果还发现 ,由于发情前后集群行为的变化 ,盘羊的日活动节律也随之发生显著改变。

The herd structure and the daytime activity rhythm were observed in September, October and November of 1998 on a total of 76 groups with more than 460 individuals of Argali ( Ovis ammon karelini )in Tianshan. The group size and structure of Argali were quite different around rutting period. The colony changed from single, or male, female, mother-baby group to mainly a mixed group. The average group size changed significantly at P <0.01 from 8.3±4.6 before rutting to 15.9±11.1 after rutting period. The herd mixings of group behavior around rutting period in Argali were significant in their daytime rhythm especially among males.