Grassly N C, Von Haeseler A, Krakauer D C
Max Planck Institute for Evolutionary Anthropology, Inselstr. 22, Leipzig, D-04103, Germany.
J Theor Biol. 2000 Oct 7;206(3):369-78. doi: 10.1006/jtbi.2000.2133.
Evolutionary models of communication are used to shed some light on the selective pressures involved in the evolution of simple referential signals, and the constraints hindering the emergence of signs. Error-prone communication results from errors in transmission (in which individuals learn the wrong associations) and communication (in which signs are mistaken for one another). We demonstrate how both classes of errors are required to generate diversity and subsequently impose limits on the sign repertoire within a population. We then explore the influence of geographic structuring of a population on the evolution of a shared sign system and the importance of such structure for the maintenance of sign diversity. Deceit tends to erode conventional signs systems thereby reducing signal diversity, we demonstrate that population structure can act as a hedge against deceit, thereby ensuring the persistence of sign systems.
通讯的进化模型被用于揭示简单指称信号进化过程中涉及的选择压力，以及阻碍符号出现的限制因素。易出错的通讯源于传播错误（个体学习到错误的关联）和交流错误（符号被彼此误认）。我们展示了这两类错误如何都需要产生多样性，并随后对种群内的符号库施加限制。然后，我们探讨了种群的地理结构对共享符号系统进化的影响，以及这种结构对于维持符号多样性的重要性。欺骗往往会侵蚀传统符号系统，从而减少信号多样性，我们证明种群结构可以作为抵御欺骗的一种保护措施，从而确保符号系统的持久性。
