护理确实会影响棉顶狨猴（绢毛猴）产后至排卵间隔的时长。

Nursing does affect the duration of the post-partum to ovulation interval in cotton-top tamarins (Saguinus oedipus).

作者信息

Ziegler T E, Widowski T M, Larson M L, Snowdon C T

机构信息

Department of Psychology, University of Wisconsin, Madison 53706.

出版信息

J Reprod Fertil. 1990 Nov;90(2):563-70. doi: 10.1530/jrf.0.0900563.

DOI:10.1530/jrf.0.0900563

PMID:2174459

Abstract

Reports on callitrichid monkeys have not revealed a significant effect of nursing on interbirth intervals or on post-partum to ovulation intervals. We examined 25 post-partum intervals in cotton-top tamarin females to determine whether nursing infants would affect the length of the post-partum to ovulation interval. Urinary LH/CG and oestrone conjugates were measured in urine samples collected in the 6 weeks after birth. The post-partum to ovulation interval is the number of days between parturition and the rise of urinary LH and oestrone conjugates associated with ovulation. There was an 84% conception rate post partum. Neither mother's parity nor sex of the infants influenced the length of the post-partum to ovulation interval. The post-partum to ovulation interval for females nursing 2 infants was twice as long as for those not nursing or nursing 1 infant (P less than 0.05). The range of post-partum to ovulation interval lengths was more variable in nursing than in non-nursing females (P less than 0.01). Females spent less than 50% of observed time in contact and less than 20% of observed time nursing their infants. Neither the number of tamarins within the family nor the amount of time the mother was in contact with infants correlated with the length of the post-partum to ovulation interval. However, there was a positive correlation between the percentage time that mothers nursed 1 infant at a time and the length of the post-partum to ovulation interval (r = 0.75, P less than 0.02). The underlying mechanisms of suckling-induced delay of ovulation are present in the cotton-top tamarin as in other primate species. However, these nursing effects do not cause the substantial delay in fertility post partum that is associated with non-callitrichid primates.

摘要

关于绢毛猴的报告并未显示哺乳对产仔间隔或产后至排卵间隔有显著影响。我们检查了25只棉顶狨雌性的产后间隔，以确定哺乳婴儿是否会影响产后至排卵间隔的长度。在出生后的6周内收集尿液样本，测量其中的尿促黄体生成素/绒毛膜促性腺激素（LH/CG）和雌酮结合物。产后至排卵间隔是指分娩与与排卵相关的尿LH和雌酮结合物升高之间的天数。产后受孕率为84%。母亲的胎次和婴儿的性别均未影响产后至排卵间隔的长度。哺乳2只婴儿的雌性的产后至排卵间隔是不哺乳或哺乳1只婴儿的雌性的两倍（P<0.05）。与不哺乳的雌性相比，哺乳雌性的产后至排卵间隔长度范围变化更大（P<0.01）。雌性与婴儿接触的观察时间不到50%，哺乳婴儿的观察时间不到20%。家庭中绢毛猴的数量以及母亲与婴儿接触的时间均与产后至排卵间隔的长度无关。然而，母亲一次哺乳1只婴儿的时间百分比与产后至排卵间隔的长度呈正相关（r = 0.75，P<0.02）。与其他灵长类物种一样，棉顶狨也存在哺乳诱导排卵延迟的潜在机制。然而，这些哺乳效应不会导致产后生育能力出现与非绢毛猴灵长类动物相关的实质性延迟。