Department of Biology, Indiana University, Bloomington, IN, United States; Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, IN, United States.
Department of Biology, Indiana University, Bloomington, IN, United States; Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, IN, United States.
Front Neuroendocrinol. 2023 Jul;70:101077. doi: 10.1016/j.yfrne.2023.101077. Epub 2023 May 20.
Communication is inherently social, so signaling systems should evolve with social systems. The 'social complexity hypothesis' posits that social complexity necessitates communicative complexity and is generally supported in vocalizing mammals. This hypothesis, however, has seldom been tested outside the acoustic modality, and comparisons across studies are confounded by varying definitions of complexity. Moreover, proximate mechanisms underlying coevolution of sociality and communication remain largely unexamined. In this review, we argue that to uncover how sociality and communication coevolve, we need to examine variation in the neuroendocrine mechanisms that coregulate social behavior and signal production and perception. Specifically, we focus on steroid hormones, monoamines, and nonapeptides, which modulate both social behavior and sensorimotor circuits and are likely targets of selection during social evolution. Lastly, we highlight weakly electric fishes as an ideal system in which to comparatively address the proximate mechanisms underlying relationships between social and signal diversity in a novel modality.
沟通本质上是社会性的，因此信号系统应该随着社会系统一起进化。“社会复杂性假说”认为，社会复杂性需要交际的复杂性，这在发声哺乳动物中得到了普遍支持。然而，这一假说很少在声学模态之外得到检验，而且由于复杂性的定义不同，研究之间的比较也受到了干扰。此外，社会行为和通讯共同进化的潜在机制在很大程度上仍未得到研究。在这篇综述中，我们认为，要揭示社会性和通讯是如何共同进化的，我们需要研究调节社会行为和信号产生和感知的神经内分泌机制的变化。具体来说，我们专注于调节社会行为和感觉运动回路的类固醇激素、单胺类和神经肽，它们可能是社会进化过程中选择的目标。最后，我们强调电鳗鱼类作为一个理想的系统，在这个系统中可以在一种新的模态中比较地解决社会和信号多样性之间关系的潜在机制。
