首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Small within-day increases in temperature affects boldness and alters personality in coral reef fish
Authors:Peter A Biro  Christa Beckmann  Judy A Stamps
Institution:1.Department of Environmental Science, and Institute for Water and Environmental Resource Management, University of Technology Sydney (UTS), Box 123, Broadway, NSW 2007, Australia;2.School of Biological Sciences A08, University of Sydney, Sydney, NSW 2006, Australia;3.Section of Evolution and Ecology, University of California at Davis, Davis, CA 95616, USA
Abstract:Consistent individual differences in behaviour, termed personality, are common in animal populations and can constrain their responses to ecological and environmental variation, such as temperature. Here, we show for the first time that normal within-daytime fluctuations in temperature of less than 3°C have large effects on personality for two species of juvenile coral reef fish in both observational and manipulative experiments. On average, individual scores on three personality traits (PTs), activity, boldness and aggressiveness, increased from 2.5- to sixfold as a function of temperature. However, whereas most individuals became more active, aggressive and bold across temperature contexts (were plastic), others did not; this changed the individual rank order across temperatures and thus altered personality. In addition, correlations between PTs were consistent across temperature contexts, e.g. fish that were active at a given temperature also tended to be both bold and aggressive. These results (i) highlight the importance of very carefully controlling for temperature when studying behavioural variation among and within individuals and (ii) suggest that individual differences in energy metabolism may contribute to animal personality, given that temperature has large direct effects on metabolic rates in ectotherms.
Keywords:plasticity  metabolism  behaviour  consistency  temperament  syndrome
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