Reproductive and Feeding Competition Among White-Faced Saki Females (Pithecia pithecia)

白脸萨基雌性 (Pithecia Pithecia) 的繁殖和取食竞争

• 批准号: 9807516
• 负责人: Marilyn Norconk
• 金额: $ 15.19万
• 依托单位: Kent State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9807516&HistoricalAwards=false
• 关键词: Reproductive; Feeding; Competition; Among; White

Students of evolutionary biology are involved in testing predictions about how animals make a living. `Making a living` is shorthand for studying how animals search for food, avoid predators, and reproduce successfully. It is assumed that, like us, animals do not have time to perform an infinite variety of tasks; some are more important than others. Finding food and avoiding predators are critical to survival even before reproduction can become an issue, and food fuels all of these activities. Since most primates need to refuel every day, the ability of each individual to find food is an essential daily activity. This study examines how Venezuelan white faced saki monkeys (Pithecia pithecia) solve the problem of finding and using food. White faced sakis live in small social groups that travel together from morning to evening. Finding food is thus both an individual and social problem. We will employ interdisciplinary methods to examine how female sakis, who like all female mammals are under stronger energy constraints than males, balance nutritional needs in different reproductive states (estrous cycles, pregnancy and lactation). Traditional behavioral methods of observation will be combined with recently developed laboratory techniques to help us understand how females make individual choices based on reproductive status and nutritional value of the foods.

进化生物学专业的学生参与测试有关动物如何谋生的预测。 “谋生”是研究动物如何寻找食物、躲避捕食者和成功繁殖的简称。 人们认为，像我们一样，动物没有时间去执行各种各样的任务;有些任务比其他任务更重要。 即使在繁殖成为问题之前，寻找食物和避免捕食者对生存至关重要，而食物为所有这些活动提供了燃料。 由于大多数灵长类动物每天都需要补充能量，因此每个个体寻找食物的能力是必不可少的日常活动。 本研究探讨了委内瑞拉白色面萨基猴（Pithuanpithuanus）如何解决寻找和使用食物的问题。白色面孔的萨奇人生活在小的社会群体中，从早到晚都在一起旅行。 因此，寻找食物既是一个个人问题，也是一个社会问题。 我们将采用跨学科的方法来研究女性sakis，谁喜欢所有女性哺乳动物比男性更强的能量约束下，平衡不同的生殖状态（发情周期，怀孕和哺乳）的营养需求。 传统的行为观察方法将与最近开发的实验室技术相结合，以帮助我们了解女性如何根据生殖状态和食物的营养价值做出个人选择。