REPRODUCTIVE HORMONES & MIGRATION PATTERNS IN JUVENILE HOWLING MONKEYS

生殖激素

• 批准号: 6277452
• 负责人: MARGARET R CLARKE
• 金额: $ 16.99万
• 依托单位: TULANE UNIVERSITY OF LOUISIANA
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-30 至 1999-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6277452
• 关键词: Mammalia; Primates; hormones; psychology

Juvenile emigration patterns are documented in mantled howling monkeys but the specific impetus is unknown. To determine if emigration is hormonally mediated, 193 fecal samples were collected from 25 juveniles in 5 social groups on Hacienda La Pacifica during June-August, 1993-1995. Samples were analyzed for estradiol, progesterone, and testosterone concentration. Mean concentrations for each individual for each year were determined, and were compared by age (1-1.9 yrs; 2-2.9 yrs.; 3-3.9 yrs), by sex (male, female), and by emigration outcome (remained, emigrated during year, emigrated during study). All one-year olds remained in natal groups, with no differences in hormone concentrations between males and females. Two-year old females that remained in groups had higher mean concentrations of all hormones than females that emigrated. This pattern reversed at three years of age Females remaining in groups had lower mean hormone concentrations than those emigrating. For two- and three-year old males, those that remained in groups had lower concentrations than those that emigrated. In contrast, for two- and three-year old males being forced out of the group during the study, all hormonal values were very

少年移民模式记录在mantled嚎叫 猴子，但具体动力尚不清楚。 以确定是否 迁出是尿道介导的，收集了193个粪便样品 从25名青少年在5个社会团体在庄园拉太平洋期间， 1993年6月至8月至1995年。 分析样品中的雌二醇， 孕酮和睾酮浓度。 的平均浓度 每一年的每一个人都被确定，并通过 年龄（1-1.9岁; 2-2.9岁; 3-3.9岁）、按性别（男、女）和 移民结果（在留、年内移民、年内移民） 研究）。 所有一岁的奥尔兹都留在了纳塔尔组， 男性和女性之间激素浓度的差异。 留在群体中的两岁雌性动物的平均 所有激素的浓度都比移民的女性高。 这 在三岁时，情况发生了逆转。 激素浓度低于移民。 对于两个-和 三岁的雄性，那些留在群体中的雄性 比那些移民的人更集中。 相反，对于两个-和 在研究过程中，三岁大的雄性被迫离开这个群体， 所有的荷尔蒙值都非常