Urinary oxytocin in capuchin monkeys: Validation and the influence of social behavior
Urinary oxytocin in capuchin monkeys: Validation and the influence of social behavior
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DOI：
10.1002/ajp.22877
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发表时间：
2018-10-01
影响因子：
2.4
通讯作者：
Brosnan, Sarah F.
中科院分区：
文献类型：
--
作者：
Benitez, Marcela E.;Sosnowski, Meghan J.;Brosnan, Sarah F.
在高度社会化的物种中，如灵长类动物，催产素在合作以及社会关系的形成和维持中起着重要作用。尽管最近对非人类灵长类动物中催产素和社会行为之间的关系感兴趣，但对社会性新世界猴中内源性催产素的了解相对较少。在本文中，我们调查催产素和社会圈养僧帽猴（Sapajus [Cebus] apella）的亲和行为之间的关系，通过第一验证方法的分析尿催产素在这个物种，第二，检查梳理和毛皮摩擦行为对催产素浓度和进一步亲和行为的影响。在验证中，我们发现鼻内外源性催产素在给药后15- 60分钟显著增加尿催产素。催产素也与梳理毛发和摩擦毛发的行为有关。我们发现，在受试者从事梳理或毛皮摩擦后，催产素浓度增加。此外，我们发现，毛皮摩擦影响亲和行为，无论是在社会毛皮摩擦回合。当个体在摩擦皮毛时花费更多的时间在接触和接近上时，在摩擦皮毛事件之后（15- 30分钟之后），所有的亲和行为都减少了。这支持了之前的研究，即催产素可能最初与这个物种的社会距离增加有关。然而，在摩擦皮毛开始后30- 45分钟，所有亲和行为的增加表明，摩擦皮毛，就像梳理一样，最终可能起到加强社会关系的作用。总体而言，这些结果支持催产素的亲和行为，维持和加强社会关系，在卷尾猴的关键作用，并强调催产素，亲和行为和社会bonding.Exogenous催产素管理，梳理和毛皮摩擦行为增加卷尾猴尿催产素之间的相互作用的复杂性。尽管增加催产素后，毛皮摩擦，亲和行为最初下降的时间后立即回合，然而，30分钟后，毛皮摩擦回合，受试者从事增加接近，接触，梳理。结果支持这一假设，催产素的适应功能是加强社会债券，然而，催产素可能有物种和上下文特定的亲和行为的影响。
In highly social species, like primates, oxytocin plays an important role in cooperation, and in the formation and maintenance of social relationships. Despite recent interest in the relationship between oxytocin and social behavior in nonhuman primates, relatively little is known about endogenous oxytocin in social New World Monkeys. In this paper, we investigate the relationship between oxytocin and affiliative behaviors in socially-housed captive capuchin monkeys (Sapajus [Cebus] apella) by first validating methods of analysis of urinary oxytocin in this species and, second, examining the effects of grooming and fur-rubbing behavior on oxytocin concentrations and further affiliative behavior. In the validation, we found that intranasal exogenous oxytocin significantly increased urinary oxytocin 15-60min post-administration. Oxytocin was also implicated in both grooming and fur-rubbing behaviors. We found that oxytocin concentrations increased after subjects engaged in grooming or fur-rubbing. In addition, we found that fur-rubbing influenced affiliative behaviors, both during and after a social fur-rubbing bout. While individuals spent more time in contact and proximity while fur-rubbing, immediately following the fur-rubbing event (15-30min afterwards) all affiliative behaviors decreased. This supports previous research that oxytocin may, in fact, initially be related to increased social distance in this species. Yet, an increase in all affiliative behaviors 30-45min after the onset of fur-rubbing suggests that fur-rubbing, like grooming, may ultimately function to strengthen social relationships. Overall, these results support a critical role for oxytocin in affiliative behaviors that maintain and strengthen social relationships in capuchin monkeys, and highlight the complexity of the interactions among oxytocin, affiliative behaviors, and social bonding.Exogenous oxytocin administration, grooming, and fur-rubbing behavior increased urinary oxytocin in capuchins. Despite increases in oxytocin after fur-rubbing, affiliative behaviors initially decreased in the time immediately following the bout; however, 30 minutes after the fur-rubbing bout, subjects engaged in increased proximity, contact, and grooming. Results support the hypothesis that the adaptive function of oxytocin is to strengthen social bonds; however, oxytocin may have species and context-specific effects on affiliative behaviors.