Social contributions to the foraging behavior of young wild golden lion tamarins (Leontopithecus rosalia): Age-related changes and partner preferences.
Social contributions to the foraging behavior of young wild golden lion tamarins (Leontopithecus rosalia): Age-related changes and partner preferences.
复制标题
对年轻野生金狮狨猴（Leontopithecus rosalia）觅食行为的社会贡献：年龄相关的变化和伴侣偏好。
DOI：
10.1002/ajp.23056
复制
发表时间：
2020
影响因子：
2.4
通讯作者：
Rapaport,LisaG
中科院分区：
文献类型：
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作者：
Rapaport,LisaG
在合作繁殖的物种中，除亲本外的群体成员也负责照顾幼体。照护的成本和收益可能会因所提供的照护类型以及照护者的特征（例如年龄、性别、生殖状况和觅食能力）而有所不同。在这里，我在对野生金狮面狨的纵向研究中，研究了父母、助手和同龄双胞胎对幼体觅食和喂养活动的相对贡献，特别是在直接食物转移、未成熟个体对共同觅食或共同喂养的耐受性以及向幼体发出信号以了解有利可图的猎物觅食地点的位置方面。我发现与食物相关的援助类型随着未成熟儿童的年龄和团体成员的年龄而变化。随着幼鱼年龄的增长，食物转移率稳步下降，而当青少年处于中年组时，共同觅食率达到顶峰。母亲和父亲在为乞讨的孩子提供食物方面是最慷慨的。母亲最常引导幼崽到生产性的觅食地点，而雌性助手从不这么做。年长的兄弟姐妹不会根据性别或年龄而改变照顾的努力。成虫和亚成虫的觅食能力并不是将猎物给予幼体的比率或照顾者容忍未成熟的植物和猎物资源共同觅食的比率的有力预测因素。因此，觅食能力并没有明显影响幼崽的慷慨程度或耐受性。
In cooperatively breeding species, group members other than the parents contribute to the care of the young. The costs and benefits to caregiving may vary with the type of care provided and with caregiver characteristics such as age, sex, reproductive status, and foraging ability. Here I examine the relative contributions of parents, helpers and same‐aged twins to the foraging and feeding activities of the young in a longitudinal study of wild golden lion tamarins, specifically with regard to direct food transfer, tolerance for coforaging or cofeeding by immatures and signaling young as to the location of profitable prey‐foraging sites. I found that the type of food‐related assistance varied as a function of the age of the immature and among group members. Rates of food transfer steadily declined as immatures aged, while coforaging rates peaked when juveniles were in the middle age group. Mothers and fathers were the most generous in terms of providing food to begging young. Mothers most often directed juveniles to productive foraging sites, and female helpers never did. Older siblings did not vary caregiving effort according to sex or age. Adult and subadult foraging ability was not a strong predictor of the rates at which prey was given to the young or the rates at which caregivers tolerated coforaging by immatures on plant and prey resources. Thus, foraging ability did not appreciably influence generosity to or tolerance of the young.