Signal traits are often linked with the physiological state and behavior of their bearer. Direct examination of the causal links among these variables has provided substantial insight into the information content of s...Signal traits are often linked with the physiological state and behavior of their bearer. Direct examination of the causal links among these variables has provided substantial insight into the information content of signals, and into the costs and benefits of signal expression. Yet recent empirical work suggests that the social context in which signals are developed and displayed can play a major role not only in how signals are received, but also in coordinating and mediating the signaling phenotype itself. Here we review both well-established and emerging evidence for direct feedbacks among an individual＇s physiological state, be- havior, and signal elaboration. We then describe an integrative view of signaling that takes into account the bidirectional rela- tionships among components of phenotype and the social context in which signals are developed and displayed. Integrating dy- namic feedback between context and phenotype within models of the evolution and maintenance of signals may yield insights into how signals evolve, how signaling phenotypes are coordinated and maintained on ecological and evolutionary time scales, and how static signals continue to convey relevant phenotypic information about their bearer through time.展开更多
1 Introduction Phenotype variation within populations both provides the raw material for and is the product of evolutionary change. An individual＇s phenotype, defined as the amalgamation of morphology, physiology, a...1 Introduction Phenotype variation within populations both provides the raw material for and is the product of evolutionary change. An individual＇s phenotype, defined as the amalgamation of morphology, physiology, and behavior, is highly complex. It has been common to try to isolate each of these aspects of phenotype rather than directly examine their integration. For example, despite the demonstrated importance of single aspects of phenotype for acquiring mates it is well known that signal traits are not evaluated in isolation, but rather in conjunction with associated behaviors, and sometimes with other signal traits （Moiler and Pomiankowski, 1993; Candolin, 2003;展开更多
基金Acknowledgements During the span of this project our work was funded by the National Science Foundation （DEBCAREER 1149942 to RJS）, and the National Evolutionary Synthesis Center （NSF #EF- 4120905606） through a graduate fellowship for DMZ.
文摘Signal traits are often linked with the physiological state and behavior of their bearer. Direct examination of the causal links among these variables has provided substantial insight into the information content of signals, and into the costs and benefits of signal expression. Yet recent empirical work suggests that the social context in which signals are developed and displayed can play a major role not only in how signals are received, but also in coordinating and mediating the signaling phenotype itself. Here we review both well-established and emerging evidence for direct feedbacks among an individual＇s physiological state, be- havior, and signal elaboration. We then describe an integrative view of signaling that takes into account the bidirectional rela- tionships among components of phenotype and the social context in which signals are developed and displayed. Integrating dy- namic feedback between context and phenotype within models of the evolution and maintenance of signals may yield insights into how signals evolve, how signaling phenotypes are coordinated and maintained on ecological and evolutionary time scales, and how static signals continue to convey relevant phenotypic information about their bearer through time.
基金Acknowledgements We are very grateful to the Executive Editor of Current Zoology, Zhiyun Jia, for enabling us to produce this column. We thank Maria Servedio, editor of Current Zoology, for the invitation to produce this series of articles. During the span of this project our work was funded by the National Science Foundation （DEB-CAREER 1149942 to RJS）.
文摘1 Introduction Phenotype variation within populations both provides the raw material for and is the product of evolutionary change. An individual＇s phenotype, defined as the amalgamation of morphology, physiology, and behavior, is highly complex. It has been common to try to isolate each of these aspects of phenotype rather than directly examine their integration. For example, despite the demonstrated importance of single aspects of phenotype for acquiring mates it is well known that signal traits are not evaluated in isolation, but rather in conjunction with associated behaviors, and sometimes with other signal traits （Moiler and Pomiankowski, 1993; Candolin, 2003;
