Alternative Maternal-Care Patterns in Two Herds of Bighorn Sheep
Alternative Maternal-Care Patterns in Two Herds of Bighorn Sheep
复制标题
两群大角羊的替代产妇护理模式
DOI：
10.2307/1381313
复制
发表时间：
1990
影响因子：
1.7
通讯作者：
Christine C. Hass
中科院分区：
文献类型：
--
作者：
Christine C. Hass
在蒙大拿州国家野牛牧场（1983-1984）和新墨西哥州佩科斯荒野（1985）对落基山大角羊（Ovis canadensis canadensis）的哺乳和相关行为进行了研究。在野牛山脉，羔羊有 31-85% 的乳汁来自外来雌性，而佩科斯地区没有羔羊从外来雌性哺乳。雌性似乎对两个羊群的羔羊的投资相同，但助手的额外护理导致野牛山脉的羔羊的哺乳率更高。野牛山脉中的异母动物比牛群中的其他雌性动物年龄更大，存活下来的后代也更多。提议采用异种哺乳作为对野牛范围内高捕食水平的反应。
Suckling and related behaviors of Rocky Mountain bighorn sheep ( Ovis canadensis canadensis ) were studied on the National Bison Range, Montana (1983–1984), and in the Pecos Wilderness, New Mexico (1985). Lambs obtained 31–85% of suckles from alien females on the Bison Range, whereas no lambs suckled from alien females in the Pecos. Females appeared to invest equally in lambs in both herds, but additional nursing by helpers resulted in higher suckling rates for lambs on the Bison Range. Allomothers on the Bison Range were older and had more surviving offspring than other females in the herd. Allonursing was proposed as a response to high predation levels on the Bison Range.