Pair-bond strength is consistent and related to partner responsiveness in a wild corvid.

IF 3.8 1区 生物学 Q1 BIOLOGY
Luca G Hahn, Rebecca Hooper, Guillam E McIvor, Alex Thornton
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引用次数: 0

Abstract

The need to maintain strong social bonds is widely thought to be a key driver of cognitive evolution. Cognitive abilities to track and respond to information about social partners may be favoured by selection if they vary within populations and confer fitness benefits. Here we evaluate four key assumptions of this argument in wild jackdaws (Corvus monedula), corvids whose long-term pair bonds exemplify one of the putative social drivers of cognitive evolution in birds. Combining observational and experimental behavioural data with long-term breeding records, we found support for three assumptions: (i) pair-bond strength varies across the population, (ii) is consistent within pairs over time and (iii) is positively associated with partner responsiveness, a measure of socio-cognitive performance. However, (iv) we did not find clear evidence that stronger pair bonds lead to better fitness outcomes. Strongly bonded pairs were better able to adjust hatching synchrony to environmental conditions but they did not fledge more or higher quality offspring. Together, these findings suggest that maintaining strong pair bonds is linked to socio-cognitive performance and may facilitate effective coordination between partners. However, they also imply that these benefits are insufficient to explain how selection acts on social cognition. We argue that evaluating how animals navigate trade-offs between investing in long-term relationships versus optimizing interactions in their wider social networks will be a crucial avenue for future research.

野生鸦科动物的配对强度是一致的,并且与伴侣的反应有关。
人们普遍认为,维持牢固社会关系的需要是认知进化的关键驱动力。如果追踪和回应社会伙伴信息的认知能力在人群中有所不同,并赋予健康益处,那么这种能力可能会受到选择的青睐。本文以野生寒鸦(Corvus monedula)为例,对这一论点的四个关键假设进行了评估,这些寒鸦的长期配对关系是鸟类认知进化的假定社会驱动因素之一。将观察和实验行为数据与长期繁殖记录相结合,我们发现了三个假设的支持:(i)伴侣关系强度在整个种群中是不同的,(ii)随着时间的推移,在成对之间是一致的,(iii)与伴侣反应性正相关,这是一种社会认知表现的衡量标准。然而,(iv)我们没有发现明确的证据表明更强的配对关系导致更好的适合度结果。强结合对能够更好地调整孵化同步以适应环境条件,但它们不能孵出更多或更高质量的后代。总之,这些发现表明,保持牢固的伴侣关系与社会认知表现有关,并可能促进伴侣之间的有效协调。然而,他们也暗示这些好处不足以解释选择如何作用于社会认知。我们认为,评估动物如何在长期关系投资与在更广泛的社会网络中优化互动之间进行权衡,将是未来研究的关键途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.90
自引率
4.30%
发文量
502
审稿时长
1 months
期刊介绍: Proceedings B is the Royal Society’s flagship biological research journal, accepting original articles and reviews of outstanding scientific importance and broad general interest. The main criteria for acceptance are that a study is novel, and has general significance to biologists. Articles published cover a wide range of areas within the biological sciences, many have relevance to organisms and the environments in which they live. The scope includes, but is not limited to, ecology, evolution, behavior, health and disease epidemiology, neuroscience and cognition, behavioral genetics, development, biomechanics, paleontology, comparative biology, molecular ecology and evolution, and global change biology.
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