首页 | 本学科首页   官方微博 | 高级检索  
     


CONTEMPORARY CULTURAL EVOLUTION OF A CONSPECIFIC RECOGNITION SIGNAL FOLLOWING SERIAL TRANSLOCATIONS
Authors:Kevin A. Parker  Mark E. Hauber  Dianne H. Brunton
Affiliation:1. The Ecology and Conservation Group, Institute for Natural Sciences, Massey University, Private Bag 102904, North Shore Mail Centre, Auckland 1309, New Zealand;2. E‐mail: reintroductionbiologist@gmail.com;3. Department of Psychology, Hunter College, City University of New York, New York 10065
Abstract:The divergence of conspecific recognition signals (CRS) among isolated populations facilitates the evolution of behavioral barriers to gene flow. The influence of CRS evolution on signal effectiveness in isolated populations can be assessed by testing the salience of changes in CRS from surviving ancestral populations but founder events are rarely detected. The population history of the North Island (NI) saddleback Philesturnus rufusater is absolutely known following conservation translocations which increased the number of populations from 1 to 15. With one exception there is no gene flow between these populations. The translocations have generated interisland divergence of male rhythmical song (MRS), a culturally transmitted CRS. We conducted an experimental test of behavioral discrimination in NI saddlebacks exposed to familiar and unfamiliar MRS and found that responses were significantly stronger for familiar MRS, consistent with a model of contemporary cultural evolution leading to discrimination between geographic song variants. Significantly, this result demonstrates the rapid tempo with which discrimination of CRS might evolve within isolated populations and supports both bottleneck and cultural mutation hypotheses in CRS evolution. The evolutionary implications of contemporary cultural evolution in the production and perception of CRS merit debate on the time frames over which conservation management is evaluated.
Keywords:Conservation management  conspecific recognition  geographical variation  microevolution  Philesturnus rufusater  song  translocation
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号