Correlates and Consequences of the Pair Bond in Steller's Jays
Correlates and Consequences of the Pair Bond in Steller's Jays
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DOI：
10.1111/eth.12051
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发表时间：
2013-02-01
期刊：
影响因子：
1.7
通讯作者：
Black, Jeffrey M.
中科院分区：
文献类型：
--
作者：
Gabriel, Pia O.;Black, Jeffrey M.
在多次繁殖尝试中保持伴侣关系的个体通常能够提高繁殖成功率，而不是更换伴侣的同种个体。然而，驱动这种配偶熟悉效应的行为机制在很大程度上仍然未知。我们调查了长期生活、社会一夫一妻制的斯特勒松鸦是否改善了它们的动作和行为协调，投入了更多的时间来维持配对关系，或者随着时间的推移，与新建立的配对相比，它们在冒险倾向上是否变得更相容。然后，我们比较了成功和不成功的伴侣关系在生育后代方面的这些配对特征。即使在非繁殖季节，杰伊的伴侣也会经常栖息在一起，发出温柔的接触叫声，并结伴旅行。然而，在同伴陪伴下观察的比例（配对坚韧度）与配对成员的冒险行为、配对关系持续时间或微妙的配对关系维持行为（即行为的主要组成部分，包括软接触呼叫、接近配偶、与配偶一起到达和离开航班的频率）的表现无关。然而，有证据表明，与斯特勒松鸦的新配对相比，继续繁殖的表现仍然有所改善。配对强度和配对行为频率的变化可能无关紧要，因为松鸦与伴侣的总体接触程度较高。此外，如果松鸦能够通过高整体强度在配对早期最大化熟悉度，那么随着配对年龄的增加，增加协调和熟悉度的额外好处可能是有限的。
Individuals that maintain pair bonds over multiple breeding attempts are often able to improve reproductive success compared to conspecifics that switch partners. However, the behavioral mechanisms driving this mate familiarity effect are still largely unknown. We investigated whether long-standing pairs in the long-lived, socially monogamous Steller's jay improved their coordination of movements and behaviors, invested more time in pair bond maintenance, or became more compatible in their tendency to take risks over time compared to newly established pairs. We then compared these pair bond characteristics for successful and unsuccessful partnerships in terms of producing offspring. Jay partners regularly perched together, gave soft contact calls and travelled as a pair even in the non-breeding season. However, the proportion of observations jay partners spent in each other's company (pair tenacity) was unrelated to risk-taking behavior of pair members, pair bond duration, or the performance of subtle pair bond maintenance behaviors (i.e., a principle component of behaviors, including soft contact calls, proximity to mates, and frequency of arrival and departure flights with mate). However, evidence suggests that reproductive performance still improved in continuing compared to new pair bonds in Steller's jays. Variation in pair tenacity and frequency of pair bond behaviors may be inconsequential because of jays overall high level of contact with partners. Additionally, if jays are able to maximize familiarity early in the pair bond through high overall pair tenacity, the additional benefit of increasing coordination and familiarity with increasing pair bond age may be limited.