Seasonality of reproduction in wild cotton-top tamarins (Saguinus oedipus) in Colombia,American Journal of Primatology

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Seasonality of reproduction in wild cotton-top tamarins (Saguinus oedipus) in Colombia
American Journal of Primatology ( IF 2.0 ) Pub Date : 2022-01-28 , DOI: 10.1002/ajp.23359
Catharine J Wheaton ₁ , Katie L Feilen _{1,

2} , Luis H Soto ₃ , Felix Medina ₃ , German Emeris ₃ , Rosamira Guillen ₃ , Anne Savage _{1,

4}

Affiliation

Seasonal availability of resources can influence the timing and success of reproduction in primates. This study examines the annual pattern of conceptions, mid-term (13 weeks) and full-term (26 weeks) pregnancy losses, births, and infant survivorship of the Critically Endangered cotton-top tamarin (Saguinus oedipus) at Proyecto Tití's long-term field site in Santa Catalina, Colombia. Using 18 years of behavior, physical exam, and fecal steroid data (N = 51 females, 168 conceptions, 121 liters), fecal estrone conjugate (E₁C) and pregnanediol-3-glucuronide (PdG) or progesterone (P4) profiles were examined to investigate the relationships between female reproductive patterns and reproductive success with feeding and climatic data. Cotton-top tamarins demonstrated seasonal patterns of reproduction and pregnancy losses. We found positive correlations between peak conception and nectarivory, births and rainfall, and mid-lactation and frugivory. High body mass mothers reproducing during the peak season were more likely to have infants survive. Overall, these results suggest that tamarins use a “relaxed income-breeder” strategy. Cotton-top tamarins appear to maximize reproductive output at the time of ovulation, and can reduce their investment in the current reproductive effort at many stages. Changes in food availability due to habitat loss and climate change will require the Critically Endangered cotton-top tamarins to alter their reproductive strategies to survive.

中文翻译：

哥伦比亚野生棉顶狨（Saguinus oedipus）繁殖的季节性

资源的季节性可用性会影响灵长类动物繁殖的时间和成功率。这项研究检查了 Proyecto Tití的长期受孕、中期（13 周）和足月（26 周）流产、分娩和婴儿存活率的年度模式。哥伦比亚圣卡塔利娜的现场。使用 18 年的行为、体检和粪便类固醇数据（N = 51 名女性，168 名受孕者，121 升），粪便雌酮结合物（E ₁C) 和孕二醇-3-葡糖苷酸 (PdG) 或孕酮 (P4) 谱进行了检查，以调查女性生殖模式与繁殖成功与喂养和气候数据之间的关系。棉顶狨猴表现出季节性的繁殖和流产模式。我们发现受孕高峰与蜜饯、出生与降雨、泌乳中期与果食之间呈正相关。在旺季生育的高体重母亲更有可能让婴儿存活下来。总体而言，这些结果表明，狨猴使用“宽松的收入饲养员”策略。棉顶狨猴似乎在排卵时最大限度地提高了生殖产量，并且可以在许多阶段减少它们对当前生殖努力的投资。

更新日期：2022-02-10

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