Age, social rank and lactational status influence ovulatory patterns in seasonally breeding rhesus monkeys.
Age, social rank and lactational status influence ovulatory patterns in seasonally breeding rhesus monkeys.
复制标题
年龄、社会地位和哺乳状况影响季节性繁殖的恒河猴的排卵模式。
DOI：
10.1095/biolreprod35.2.353
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发表时间：
1986
影响因子：
3.6
通讯作者：
Wilson,ME
中科院分区：
文献类型：
--
作者：
Pope,NS;Gordon,TP;Wilson,ME
户外饲养的恒河猴表现出独特的繁殖季节，仅限于秋季和冬季。研究了四组雌性恒河猴：经产非哺乳期 (MNL; n = 8)、经产哺乳期 (ML; n = 6)、初产哺乳期 (PL; n = 3) 和未产期首次排卵者 (N; n = 6)，以研究年龄、胎次和社会优势等级对繁殖季节参数的影响。 MNL exhibited the longest season (146 days), and PL the shortest (70 days), with N (106 days) and ML (89 days) intermediate.与其他群体相比，PL 女性的正常排卵百分比也显着降低。体重和体脂估计值都与排卵季节的时间或排卵季节内的质量无关。胎次和社会主导地位与正常排卵的百分比显着相关（r = 0.85），排名较低的初产女性表现出最少的正常排卵。这些数据表明，乳婴的存在与环境因素协同作用，决定了繁殖季节的参数。此外，青春期后的雌性可能对那些终止繁殖季节的因素更敏感，并且一些与体重无关但与低社会支配地位和/或初产有关的因素使雌性在繁殖季节期间正常黄体功能的能力较差。
Rhesus monkeys housed outdoors exhibit a distinct breeding season limited to the fall and winter months. Four groups of female rhesus monkeys, multiparous nonlactating (MNL; n = 8), multiparous lactating (ML; n = 6), primiparous lactating (PL; n = 3) and nulliparous first-time ovulators (N; n = 6) were studied to investigate the influence of age, parity, and social dominance rank on the parameters of the breeding season. MNL exhibited the longest season (146 days), and PL the shortest (70 days), with N (106 days) and ML (89 days) intermediate. PL females also had a significantly reduced percentage of normal ovulations compared to other groups. Neither body weight nor estimates of body fat were related to either the timing of the ovulatory season or the quality of ovulations within the season. Parity and social dominance rank were significantly related to the percentage of normal ovulations (r = 0.85), with low-ranking, primiparous females exhibiting the fewest normal ovulations. These data indicate that the presence of a suckling infant acts synergistically with environmental factors to determine the parameters of the breeding season. Furthermore, postpubertal females may be more responsive to those factors that terminate the breeding season, and some factor independent of body weight but associated with low social dominance rank and/or primiparity renders females less capable of normal luteal function during the breeding season.