Reproductive seasonality in two sympatric primates ( Ateles belzebuth and Lagothrix lagotricha poeppigii ) from Amazonian Ecuador
Reproductive seasonality in two sympatric primates ( Ateles belzebuth and Lagothrix lagotricha poeppigii ) from Amazonian Ecuador
复制标题
亚马逊厄瓜多尔两种同域灵长类动物（Ateles belzebuth 和 Lagothrix lagotricha poeppigii）的生殖季节性
DOI：
10.1002/ajp.23220
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发表时间：
2020
影响因子：
2.4
通讯作者：
Di Fiore, Anthony
中科院分区：
文献类型：
--
作者：
Ellis, Kelsey M.;Abondano, Laura A.;Montes‐Rojas, Andrés;Link, Andrés;Di Fiore, Anthony
由于它们庞大的体型和“缓慢”的生活史，阿特林灵长类动物被认为遵循一种风险规避的繁殖策略，类似于资本繁殖者，在这种策略中，它们积累能量储备，以预期未来的生殖事件，如妊娠和哺乳。然而，由于缺乏来自野生种群的纵向数据，迄今为止很少有研究能够比较生殖事件的时间（例如，交配、受孕和生育）与多年来不断变化的资源可用性有关。我们研究了两种atelin物种-白腹蜘蛛猴（Ateles belzebuth）和低地毛猴（Lagothrix lagotricha poeppipeli）的繁殖模式-与亚马逊厄瓜多尔Tiputini生物多样性站（TBS）的水果可用性的栖息地范围估计有关。我们的样本包括4年的数据出生（N= 36）和交配（N= 170）为兔，10年的数据出生（N= 35）和交配（N= 74）为Ateles，和7年的数据成熟水果的可用性。生殖活动具有明显的季节性。对于这两个物种，出生集中在5月至9月之间，这段时间成熟的水果相对稀少，而推断的概念发生在9月至1月之间，成熟的水果供应增加，并在整个森林中保持在高水平。出生率的年际变化相对稳定，除了2016年，在强烈的厄尔尼诺事件之后出生的婴儿数量增加了一倍，这可能导致2015年繁殖季节水果产量异常高。虽然全年都有交配，但绝大多数（>90%的Lagothrix和>80%的Ateles）发生在8月至2月之间，当时女性最有可能怀孕。总的来说，这些数据遵循在其他atelin灵长类动物中观察到的生殖模式，并且正如其他人所提出的那样，表明atelin可能遵循风险规避的繁殖策略。
With their large body size and “slow” life histories, atelin primates are thought to follow a risk‐averse breeding strategy, similar to capital breeders, in which they accumulate energy reserves in anticipation of future reproductive events such as gestation and lactation. However, given the paucity of longitudinal data from wild populations, few studies to date have been able to compare the timing of reproductive events (e.g., copulations, conceptions, and births) in relation to shifting resource availability over multiple years. We examined the reproductive patterns of two atelin species—white‐bellied spider monkeys (Ateles belzebuth) and lowland woolly monkeys (Lagothrix lagotricha poeppigii)—in relation to habitat‐wide estimates of fruit availability at the Tiputini Biodiversity Station (TBS) in Amazonian Ecuador. Our sample included 4 years of data on births (N= 36) and copulations (N= 170) forLagothrix, 10 years of data on births (N= 35) and copulations (N= 74) forAteles, and 7 years of data on ripe fruit availability. Reproductive events were distinctly seasonal. For both species, births were concentrated between May and September, a time period in which ripe fruit was relatively scarce, while inferred conceptions occurred between September and January, when ripe fruit availability was increasing and maintained at high‐levels throughout the forest. Interannual variation in births was relatively stable, except for in 2016 when twice as many infants were born following a strong El Niño event that may have led to unusually high levels of fruit productivity during the 2015 breeding season. Although copulations were observed year‐round, an overwhelming majority (>90% forLagothrixand >80% forAteles) took place between August and February when females were most likely to conceive. Collectively, these data follow the reproductive patterns observed in other atelin primates, and, as proposed by others, suggest that atelins may follow a risk‐averse breeding strategy.