Vigilance behavior of Pyrenean chamois Rupicapra pyrenaica pyrenaica: Effect of sex and position in the herd
Vigilance behavior of Pyrenean chamois Rupicapra pyrenaica pyrenaica: Effect of sex and position in the herd
复制标题
DOI：
10.1093/czoolo/56.2.232
复制
发表时间：
2010-04-01
期刊：
影响因子：
2.2
通讯作者：
Manteca, Xavier
中科院分区：
文献类型：
--
作者：
Dalmau, Antoni;Ferret, Alfred;Manteca, Xavier
比利牛是一种广泛存在于开阔地带的山地有蹄类动物。最优的群体规模是在群体生活的优势(减少被捕食的风险)和劣势(群体成员之间的竞争)之间权衡的结果。此外，群体生活的利弊可能因个体在群体中的位置而异。我们的目的是研究群体的中心位置和外围位置对雄性和雌性比利牛斯查莫斯的摄食和警觉行为的影响，并确定是否存在群体规模效应。我们使用了焦点动物取样，并记录了当焦点动物参与时的社会互动。对于雄性，群体中央部分的警戒率高于外围部分，这可能是因为群体中心部分的动物密度较高，被同种动物干扰的可能性更高。对于雌性，警戒率并不因在群体中的位置而有所不同。雌性比雄性花更多的时间进食，雄性比雌性表现出更高的警戒行为频率。我们没有观察到群体规模和警觉行为之间的明确关系。警戒行为的差异可能是由于社会互动[当代动物学56(2)：232-237,2010]。
The Pyrenean chamois Rupicapra pyrenaica pyrenaica is a mountain-dwelling ungulate with an extensive presence in open areas. Optimal group size results from the trade off between advantages (a reduction in the risk of predation) and disadvantages (competition between members of the herd) of group living. In addition, advantages and disadvantages of group living may vary depending on the position of each individual within the herd. Our objective was to study the effect of central vs. peripheral position in the herd on feeding and vigilance behavior in male and female Pyrenean chamois and to ascertain if a group size effect existed. We used focal animal sampling and recorded social interactions when a focal animal was involved. With males, vigilance rate was higher in the central part of the group than at the periphery, probably due to a higher density of animals in the central part of the herd and a higher probability of being disturbed by conspecifics. With females, vigilance rate did not differ according to position in the herd. Females spent more time feeding than males, and males showed a higher frequency of the vigilance behavior than females. We did not observe a clear relationship between group size and vigilance behavior. The differences in vigilance behavior might be due to social interactions [Current Zoology 56(2): 232-237, 2010].