ADAPTATION AND PLASTICITY OF ANIMAL COMMUNICATION IN FLUCTUATING ENVIRONMENTS
ADAPTATION AND PLASTICITY OF ANIMAL COMMUNICATION IN FLUCTUATING ENVIRONMENTS
复制标题
DOI：
10.1111/j.1558-5646.2010.01056.x
复制
发表时间：
2010-11
期刊：
影响因子：
3.3
通讯作者：
T. Ord;J. Stamps;J. Losos
中科院分区：
文献类型：
--
作者：
T. Ord;J. Stamps;J. Losos
当物种在不同栖息地进行交流时，在具有挑战性的条件下促进远程信号接收的适应性有望产生信号多样性。尽管我们对个体交流动物如何应对影响信号检测的条件有了大致的了解，但信号特征的可塑性和进化变化在多大程度上导致了信号行为的种间差异尚不清楚。我们量化了自由生活蜥蜴的视觉显示和已知的环境变量，这些变量会影响两个独立岛屿辐射对多个物种的显示检测。我们发现了显示特征的适应性进化和适应性可塑性作为环境条件的函数的证据，但可塑性是观察到的跨物种显示行为差异的主要原因。同时，两岛辐射在信号行为方面存在显著差异，与环境无关。因此，过去的进化事件在塑造蜥蜴调整信号以应对当今环境挑战的方式方面发挥了重要作用。我们的研究结果除了表明可塑性如何导致种间交流信号的差异外，还表明进化的变幻莫测本身也会导致物种之间的信号变化。
Adaptations that facilitate the reception of long‐range signals under challenging conditions are expected to generate signal diversity when species communicate in different habitats. Although we have a general understanding of how individual communicating animals cope with conditions influencing signal detection, the extent to which plasticity and evolutionary changes in signal characteristics contribute to interspecific differences in signaling behavior is unclear. We quantified the visual displays of free‐living lizards and environmental variables known to influence display detection for multiple species from two separate island radiations. We found evidence of both adaptive evolution and adaptive plasticity in display characteristics as a function of environmental conditions, but plasticity accounted for most of the observed differences in display behavior across species. At the same time, prominent differences between the two island radiations existed in aspects of signaling behavior, unrelated to the environment. Past evolutionary events have therefore played an important role in shaping the way lizards adjust their signals to challenges in present‐day environments. In addition to showing how plasticity contributes to interspecific differences in communication signals, our findings suggest the vagaries of evolution can in itself lead to signal variation between species.