How prior pair-bonding experience affects future bonding behavior in monogamous prairie voles.
How prior pair-bonding experience affects future bonding behavior in monogamous prairie voles.
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DOI：
10.1016/j.yhbeh.2020.104847
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发表时间：
2020-11
影响因子：
3.5
通讯作者：
Donaldson ZR
中科院分区：
文献类型：
--
作者：
Harbert KJ;Pellegrini M;Gordon KM;Donaldson ZR
一夫一妻制的草原田鼠（Microtus ochrogaster）形成基于交配的配对债券。虽然野生草原田鼠在失去伴侣后很少重新配对，但实验室研究表明，以前的配对和交配并不能否定形成新伴侣偏好的能力。然而，很少有人知道如何以前的债券经验可能会改变一个新的对键的轨迹和显示。在本研究中，我们通过分离伴侣来破坏最初的配对键，然后改变引入新伴侣的时间。我们评估了分离时间如何影响随着时间的推移，合作伙伴偏好的稳定性，并影响决策的雄性田鼠进行头对头合作伙伴偏好测试，他们之间的第一和第二个合作伙伴的选择。我们发现，持续表现出对第二个伴侣的偏好的能力，取代了最初的配对关系，取决于测试动物与他们的第一个伴侣分开的时间。先前的结合经验也塑造了交配对伴侣偏好的后续影响。合作伙伴的偏好强度是敏感的延迟与第二个合作伙伴，但不是第一个合作伙伴，无论分离时间。这些结果表明，在最初的配对关系之后，对新伴侣形成一致、强烈偏好的能力取决于自与第一个伴侣分离以来所经过的时间。这些结果提供了宝贵的洞察力，社会债券是如何动态地塑造先前的社会经验，并确定变量，有助于恢复从合作伙伴的损失和能力，形成一个新的对债券。他们还描绘了一个行为轨迹，这对未来的研究工作至关重要，研究荷尔蒙和基因的变化，使人们能够从失去伴侣中恢复过来。
Monogamous prairie voles (Microtus ochrogaster) form mating-based pair bonds. Although wild prairie voles rarely re-pair following loss of a partner, laboratory studies have shown that previous pairing and mating does not negate the ability to form a new partner preference. However, little is known about how prior bond experience may alter the trajectory and display of a new pair bond. In the present study, we disrupted an initial pair bond by separating partners and then varied the amount of time before a new partner was introduced. We assessed how separation time affected the stability of partner preference over time and influenced decision-making in male voles performing a head-to-head partner preference test in which they chose between the first and second partner. We found that the ability to consistently display a preference for the second partner, supplanting the initial pair bond, depended on how long the test animal was separated from their first partner. Prior bonding experience also shaped the subsequent effects of mating on partner preference. Partner preference strength was sensitive to latency to mate with the second partner but not the first partner, irrespective of separation time. These results suggest that the ability to form a consistent, strong preference for a new partner after an initial pair bond depends upon the amount of time that has passed since separation from the first partner. These results provide valuable insight into how social bonds are dynamically shaped by prior social experience and identify variables that contribute to recovery from partner loss and the ability to form a new pair bond. They also delineate a behavioral trajectory essential for future work examining the hormonal and genetic changes that enable recovery from partner loss.
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